/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 INSUFFICIENT_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/weaver/chl-match-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 06:16:38,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 06:16:38,522 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 06:16:38,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 06:16:38,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 06:16:38,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 06:16:38,557 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 06:16:38,561 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 06:16:38,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 06:16:38,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 06:16:38,561 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 06:16:38,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 06:16:38,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 06:16:38,562 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 06:16:38,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 06:16:38,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 06:16:38,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 06:16:38,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 06:16:38,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 06:16:38,564 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 06:16:38,564 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 06:16:38,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 06:16:38,566 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 06:16:38,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 06:16:38,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 06:16:38,569 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 06:16:38,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 06:16:38,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:16:38,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 06:16:38,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 06:16:38,570 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 06:16:38,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 06:16:38,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 06:16:38,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 06:16:38,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 06:16:38,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 06:16:38,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 06:16:38,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 06:16:38,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 06:16:38,834 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 06:16:38,834 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 06:16:38,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-symm.wvr.c [2023-08-27 06:16:39,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 06:16:40,002 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 06:16:40,003 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-symm.wvr.c [2023-08-27 06:16:40,011 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ff49142/941396d59f314177890b924b9fc075be/FLAGb8a9b12f5 [2023-08-27 06:16:40,027 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ff49142/941396d59f314177890b924b9fc075be [2023-08-27 06:16:40,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 06:16:40,033 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 06:16:40,035 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 06:16:40,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 06:16:40,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 06:16:40,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:16:40" (1/1) ... [2023-08-27 06:16:40,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e79934e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:16:40, skipping insertion in model container [2023-08-27 06:16:40,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:16:40" (1/1) ... [2023-08-27 06:16:40,053 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 06:16:40,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:16:40,189 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 06:16:40,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:16:40,215 INFO L206 MainTranslator]: Completed translation [2023-08-27 06:16:40,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:16:40 WrapperNode [2023-08-27 06:16:40,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 06:16:40,216 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 06:16:40,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 06:16:40,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 06:16:40,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:16:40" (1/1) ... [2023-08-27 06:16:40,224 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:16:40" (1/1) ... [2023-08-27 06:16:40,243 INFO L138 Inliner]: procedures = 22, calls = 28, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 212 [2023-08-27 06:16:40,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 06:16:40,243 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 06:16:40,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 06:16:40,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 06:16:40,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:16:40" (1/1) ... [2023-08-27 06:16:40,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:16:40" (1/1) ... [2023-08-27 06:16:40,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:16:40" (1/1) ... [2023-08-27 06:16:40,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:16:40" (1/1) ... [2023-08-27 06:16:40,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:16:40" (1/1) ... [2023-08-27 06:16:40,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:16:40" (1/1) ... [2023-08-27 06:16:40,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:16:40" (1/1) ... [2023-08-27 06:16:40,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:16:40" (1/1) ... [2023-08-27 06:16:40,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 06:16:40,261 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 06:16:40,261 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 06:16:40,261 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 06:16:40,261 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:16:40" (1/1) ... [2023-08-27 06:16:40,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:16:40,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:16:40,303 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 06:16:40,328 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 06:16:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 06:16:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 06:16:40,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 06:16:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 06:16:40,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 06:16:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 06:16:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 06:16:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 06:16:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 06:16:40,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 06:16:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 06:16:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 06:16:40,338 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 06:16:40,409 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 06:16:40,410 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 06:16:40,794 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 06:16:40,801 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 06:16:40,801 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 06:16:40,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:16:40 BoogieIcfgContainer [2023-08-27 06:16:40,803 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 06:16:40,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 06:16:40,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 06:16:40,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 06:16:40,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:16:40" (1/3) ... [2023-08-27 06:16:40,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e224ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:16:40, skipping insertion in model container [2023-08-27 06:16:40,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:16:40" (2/3) ... [2023-08-27 06:16:40,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e224ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:16:40, skipping insertion in model container [2023-08-27 06:16:40,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:16:40" (3/3) ... [2023-08-27 06:16:40,808 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2023-08-27 06:16:40,819 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 06:16:40,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-08-27 06:16:40,819 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 06:16:40,944 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 06:16:40,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 274 transitions, 564 flow [2023-08-27 06:16:41,065 INFO L124 PetriNetUnfolderBase]: 19/272 cut-off events. [2023-08-27 06:16:41,066 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 06:16:41,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 272 events. 19/272 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 401 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 193. Up to 2 conditions per place. [2023-08-27 06:16:41,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 274 transitions, 564 flow [2023-08-27 06:16:41,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 263 transitions, 538 flow [2023-08-27 06:16:41,086 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 06:16:41,095 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 263 transitions, 538 flow [2023-08-27 06:16:41,098 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 263 transitions, 538 flow [2023-08-27 06:16:41,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 263 transitions, 538 flow [2023-08-27 06:16:41,130 INFO L124 PetriNetUnfolderBase]: 19/263 cut-off events. [2023-08-27 06:16:41,130 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 06:16:41,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 263 events. 19/263 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 399 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 193. Up to 2 conditions per place. [2023-08-27 06:16:41,139 INFO L119 LiptonReduction]: Number of co-enabled transitions 19292 [2023-08-27 06:17:01,761 INFO L134 LiptonReduction]: Checked pairs total: 19635 [2023-08-27 06:17:01,761 INFO L136 LiptonReduction]: Total number of compositions: 369 [2023-08-27 06:17:01,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 06:17:01,774 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;@7b65585a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 06:17:01,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2023-08-27 06:17:01,776 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 06:17:01,776 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-27 06:17:01,776 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 06:17:01,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:01,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:17:01,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-08-27 06:17:01,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:01,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1164980, now seen corresponding path program 1 times [2023-08-27 06:17:01,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:01,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437877811] [2023-08-27 06:17:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:01,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:01,878 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 06:17:01,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:01,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437877811] [2023-08-27 06:17:01,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437877811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:01,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:01,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:17:01,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446177538] [2023-08-27 06:17:01,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:01,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 06:17:01,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 06:17:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 06:17:01,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 643 [2023-08-27 06:17:01,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 259.5) internal successors, (519), 2 states have internal predecessors, (519), 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 06:17:01,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:01,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 643 [2023-08-27 06:17:01,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:02,094 INFO L124 PetriNetUnfolderBase]: 297/540 cut-off events. [2023-08-27 06:17:02,095 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-27 06:17:02,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 540 events. 297/540 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 2734 event pairs, 297 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 1016. Up to 541 conditions per place. [2023-08-27 06:17:02,099 INFO L140 encePairwiseOnDemand]: 635/643 looper letters, 27 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2023-08-27 06:17:02,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 120 flow [2023-08-27 06:17:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 06:17:02,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 06:17:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 551 transitions. [2023-08-27 06:17:02,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284603421461897 [2023-08-27 06:17:02,115 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 551 transitions. [2023-08-27 06:17:02,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 551 transitions. [2023-08-27 06:17:02,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:02,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 551 transitions. [2023-08-27 06:17:02,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 275.5) internal successors, (551), 2 states have internal predecessors, (551), 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 06:17:02,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 643.0) internal successors, (1929), 3 states have internal predecessors, (1929), 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 06:17:02,127 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 643.0) internal successors, (1929), 3 states have internal predecessors, (1929), 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 06:17:02,129 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 82 flow. Second operand 2 states and 551 transitions. [2023-08-27 06:17:02,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 120 flow [2023-08-27 06:17:02,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 06:17:02,133 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 58 flow [2023-08-27 06:17:02,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-08-27 06:17:02,136 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-08-27 06:17:02,137 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 58 flow [2023-08-27 06:17:02,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 259.5) internal successors, (519), 2 states have internal predecessors, (519), 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 06:17:02,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:02,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:17:02,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 06:17:02,138 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-08-27 06:17:02,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:02,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1164979, now seen corresponding path program 1 times [2023-08-27 06:17:02,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:02,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006418416] [2023-08-27 06:17:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:02,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:02,242 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 06:17:02,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:02,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006418416] [2023-08-27 06:17:02,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006418416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:02,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:02,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:17:02,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23733080] [2023-08-27 06:17:02,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:02,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:02,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:02,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:02,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:02,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 643 [2023-08-27 06:17:02,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:02,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:02,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 643 [2023-08-27 06:17:02,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:02,356 INFO L124 PetriNetUnfolderBase]: 240/441 cut-off events. [2023-08-27 06:17:02,356 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 06:17:02,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 441 events. 240/441 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 2118 event pairs, 240 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 892. Up to 441 conditions per place. [2023-08-27 06:17:02,358 INFO L140 encePairwiseOnDemand]: 640/643 looper letters, 24 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-08-27 06:17:02,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 104 flow [2023-08-27 06:17:02,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:02,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:02,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 789 transitions. [2023-08-27 06:17:02,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40902021772939345 [2023-08-27 06:17:02,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 789 transitions. [2023-08-27 06:17:02,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 789 transitions. [2023-08-27 06:17:02,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:02,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 789 transitions. [2023-08-27 06:17:02,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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 06:17:02,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:02,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:02,366 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 58 flow. Second operand 3 states and 789 transitions. [2023-08-27 06:17:02,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 104 flow [2023-08-27 06:17:02,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 06:17:02,367 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 56 flow [2023-08-27 06:17:02,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-27 06:17:02,368 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-08-27 06:17:02,368 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 56 flow [2023-08-27 06:17:02,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:02,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:02,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:17:02,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 06:17:02,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-08-27 06:17:02,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:02,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1165057, now seen corresponding path program 1 times [2023-08-27 06:17:02,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:02,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340948352] [2023-08-27 06:17:02,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:02,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:02,433 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 06:17:02,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:02,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340948352] [2023-08-27 06:17:02,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340948352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:02,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:02,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:17:02,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955180931] [2023-08-27 06:17:02,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:02,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:02,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:02,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:02,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:02,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 643 [2023-08-27 06:17:02,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:02,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:02,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 643 [2023-08-27 06:17:02,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:02,527 INFO L124 PetriNetUnfolderBase]: 189/352 cut-off events. [2023-08-27 06:17:02,528 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 06:17:02,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 352 events. 189/352 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 1610 event pairs, 189 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 714. Up to 352 conditions per place. [2023-08-27 06:17:02,529 INFO L140 encePairwiseOnDemand]: 640/643 looper letters, 22 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-08-27 06:17:02,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 23 transitions, 98 flow [2023-08-27 06:17:02,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:02,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2023-08-27 06:17:02,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.407983411093831 [2023-08-27 06:17:02,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2023-08-27 06:17:02,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2023-08-27 06:17:02,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:02,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2023-08-27 06:17:02,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 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 06:17:02,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:02,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:02,536 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 56 flow. Second operand 3 states and 787 transitions. [2023-08-27 06:17:02,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 23 transitions, 98 flow [2023-08-27 06:17:02,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 23 transitions, 97 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:02,537 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 53 flow [2023-08-27 06:17:02,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-27 06:17:02,538 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -12 predicate places. [2023-08-27 06:17:02,538 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 53 flow [2023-08-27 06:17:02,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:02,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:02,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:17:02,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 06:17:02,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-08-27 06:17:02,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:02,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1165051, now seen corresponding path program 1 times [2023-08-27 06:17:02,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:02,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67160897] [2023-08-27 06:17:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:02,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:02,593 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 06:17:02,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:02,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67160897] [2023-08-27 06:17:02,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67160897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:02,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:02,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:17:02,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346953589] [2023-08-27 06:17:02,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:02,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:02,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:02,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:02,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:02,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 643 [2023-08-27 06:17:02,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:02,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:02,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 643 [2023-08-27 06:17:02,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:02,703 INFO L124 PetriNetUnfolderBase]: 144/273 cut-off events. [2023-08-27 06:17:02,703 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 06:17:02,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 273 events. 144/273 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 1153 event pairs, 144 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 556. Up to 273 conditions per place. [2023-08-27 06:17:02,704 INFO L140 encePairwiseOnDemand]: 640/643 looper letters, 20 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2023-08-27 06:17:02,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 21 transitions, 91 flow [2023-08-27 06:17:02,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:02,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 785 transitions. [2023-08-27 06:17:02,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069466044582685 [2023-08-27 06:17:02,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 785 transitions. [2023-08-27 06:17:02,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 785 transitions. [2023-08-27 06:17:02,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:02,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 785 transitions. [2023-08-27 06:17:02,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 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 06:17:02,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:02,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:02,711 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 53 flow. Second operand 3 states and 785 transitions. [2023-08-27 06:17:02,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 21 transitions, 91 flow [2023-08-27 06:17:02,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 90 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:02,711 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 50 flow [2023-08-27 06:17:02,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-08-27 06:17:02,713 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -13 predicate places. [2023-08-27 06:17:02,713 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 50 flow [2023-08-27 06:17:02,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:02,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:02,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:17:02,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 06:17:02,713 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-08-27 06:17:02,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:02,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1165055, now seen corresponding path program 1 times [2023-08-27 06:17:02,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:02,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12702368] [2023-08-27 06:17:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:02,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:02,792 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 06:17:02,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:02,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12702368] [2023-08-27 06:17:02,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12702368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:02,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:02,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:17:02,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119398445] [2023-08-27 06:17:02,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:02,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:02,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:02,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:02,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:02,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 643 [2023-08-27 06:17:02,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:02,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:02,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 643 [2023-08-27 06:17:02,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:02,852 INFO L124 PetriNetUnfolderBase]: 105/204 cut-off events. [2023-08-27 06:17:02,853 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-27 06:17:02,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 204 events. 105/204 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 797 event pairs, 105 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 418. Up to 204 conditions per place. [2023-08-27 06:17:02,854 INFO L140 encePairwiseOnDemand]: 640/643 looper letters, 18 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-08-27 06:17:02,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 84 flow [2023-08-27 06:17:02,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:02,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 783 transitions. [2023-08-27 06:17:02,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4059097978227061 [2023-08-27 06:17:02,855 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 783 transitions. [2023-08-27 06:17:02,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 783 transitions. [2023-08-27 06:17:02,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:02,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 783 transitions. [2023-08-27 06:17:02,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 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 06:17:02,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:02,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:02,860 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 50 flow. Second operand 3 states and 783 transitions. [2023-08-27 06:17:02,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 84 flow [2023-08-27 06:17:02,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 19 transitions, 83 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:02,861 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 47 flow [2023-08-27 06:17:02,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-08-27 06:17:02,861 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -14 predicate places. [2023-08-27 06:17:02,862 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 47 flow [2023-08-27 06:17:02,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:02,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:02,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:17:02,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 06:17:02,862 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-08-27 06:17:02,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:02,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1165052, now seen corresponding path program 1 times [2023-08-27 06:17:02,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:02,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235399371] [2023-08-27 06:17:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:02,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:02,878 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 06:17:02,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:02,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235399371] [2023-08-27 06:17:02,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235399371] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:02,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:02,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:17:02,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214172774] [2023-08-27 06:17:02,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:02,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:02,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:02,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:02,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:02,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 643 [2023-08-27 06:17:02,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:02,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:02,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 643 [2023-08-27 06:17:02,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:02,928 INFO L124 PetriNetUnfolderBase]: 72/145 cut-off events. [2023-08-27 06:17:02,928 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 06:17:02,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 145 events. 72/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 510 event pairs, 72 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 300. Up to 145 conditions per place. [2023-08-27 06:17:02,929 INFO L140 encePairwiseOnDemand]: 640/643 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-27 06:17:02,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 77 flow [2023-08-27 06:17:02,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:02,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:02,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 781 transitions. [2023-08-27 06:17:02,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4048729911871436 [2023-08-27 06:17:02,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 781 transitions. [2023-08-27 06:17:02,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 781 transitions. [2023-08-27 06:17:02,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:02,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 781 transitions. [2023-08-27 06:17:02,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 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 06:17:02,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:02,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:02,936 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 47 flow. Second operand 3 states and 781 transitions. [2023-08-27 06:17:02,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 77 flow [2023-08-27 06:17:02,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:02,936 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 44 flow [2023-08-27 06:17:02,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-08-27 06:17:02,937 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -15 predicate places. [2023-08-27 06:17:02,937 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 44 flow [2023-08-27 06:17:02,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:02,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:02,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:17:02,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 06:17:02,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-08-27 06:17:02,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:02,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1165075, now seen corresponding path program 1 times [2023-08-27 06:17:02,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:02,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043620704] [2023-08-27 06:17:02,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:02,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:02,980 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 06:17:02,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:02,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043620704] [2023-08-27 06:17:02,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043620704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:02,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:02,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:17:02,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432671199] [2023-08-27 06:17:02,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:02,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:02,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:02,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:02,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:02,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 643 [2023-08-27 06:17:02,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:02,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:02,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 643 [2023-08-27 06:17:02,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:03,021 INFO L124 PetriNetUnfolderBase]: 45/96 cut-off events. [2023-08-27 06:17:03,021 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 06:17:03,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 96 events. 45/96 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 287 event pairs, 45 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 202. Up to 96 conditions per place. [2023-08-27 06:17:03,022 INFO L140 encePairwiseOnDemand]: 640/643 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-27 06:17:03,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 15 transitions, 70 flow [2023-08-27 06:17:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:03,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 779 transitions. [2023-08-27 06:17:03,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40383618455158116 [2023-08-27 06:17:03,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 779 transitions. [2023-08-27 06:17:03,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 779 transitions. [2023-08-27 06:17:03,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:03,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 779 transitions. [2023-08-27 06:17:03,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 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 06:17:03,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:03,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:03,029 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 44 flow. Second operand 3 states and 779 transitions. [2023-08-27 06:17:03,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 15 transitions, 70 flow [2023-08-27 06:17:03,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 15 transitions, 69 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:03,030 INFO L231 Difference]: Finished difference. Result has 26 places, 15 transitions, 41 flow [2023-08-27 06:17:03,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=26, PETRI_TRANSITIONS=15} [2023-08-27 06:17:03,031 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -16 predicate places. [2023-08-27 06:17:03,032 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 15 transitions, 41 flow [2023-08-27 06:17:03,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:03,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:03,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:17:03,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 06:17:03,032 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-08-27 06:17:03,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:03,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1165074, now seen corresponding path program 1 times [2023-08-27 06:17:03,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:03,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580079639] [2023-08-27 06:17:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:03,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:03,069 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 06:17:03,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580079639] [2023-08-27 06:17:03,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580079639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:03,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:03,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:17:03,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80094943] [2023-08-27 06:17:03,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:03,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:03,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:03,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:03,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:03,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 643 [2023-08-27 06:17:03,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 15 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:03,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:03,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 643 [2023-08-27 06:17:03,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:03,098 INFO L124 PetriNetUnfolderBase]: 24/57 cut-off events. [2023-08-27 06:17:03,098 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 06:17:03,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 57 events. 24/57 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 127 event pairs, 24 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 124. Up to 57 conditions per place. [2023-08-27 06:17:03,098 INFO L140 encePairwiseOnDemand]: 640/643 looper letters, 12 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-08-27 06:17:03,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 13 transitions, 63 flow [2023-08-27 06:17:03,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:03,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:03,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2023-08-27 06:17:03,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40279937791601866 [2023-08-27 06:17:03,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2023-08-27 06:17:03,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2023-08-27 06:17:03,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:03,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2023-08-27 06:17:03,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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 06:17:03,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:03,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:03,104 INFO L175 Difference]: Start difference. First operand has 26 places, 15 transitions, 41 flow. Second operand 3 states and 777 transitions. [2023-08-27 06:17:03,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 13 transitions, 63 flow [2023-08-27 06:17:03,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 13 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:03,104 INFO L231 Difference]: Finished difference. Result has 25 places, 13 transitions, 38 flow [2023-08-27 06:17:03,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=25, PETRI_TRANSITIONS=13} [2023-08-27 06:17:03,106 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -17 predicate places. [2023-08-27 06:17:03,106 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 13 transitions, 38 flow [2023-08-27 06:17:03,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:03,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:03,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:17:03,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 06:17:03,107 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-08-27 06:17:03,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:03,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1165076, now seen corresponding path program 1 times [2023-08-27 06:17:03,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:03,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934451047] [2023-08-27 06:17:03,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:03,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:03,141 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 06:17:03,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:03,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934451047] [2023-08-27 06:17:03,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934451047] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:03,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:03,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:17:03,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782308258] [2023-08-27 06:17:03,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:03,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:17:03,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:03,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:17:03,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:17:03,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 643 [2023-08-27 06:17:03,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:03,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:03,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 643 [2023-08-27 06:17:03,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:03,166 INFO L124 PetriNetUnfolderBase]: 9/28 cut-off events. [2023-08-27 06:17:03,166 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 06:17:03,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 28 events. 9/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 66. Up to 28 conditions per place. [2023-08-27 06:17:03,166 INFO L140 encePairwiseOnDemand]: 640/643 looper letters, 10 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-08-27 06:17:03,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 11 transitions, 56 flow [2023-08-27 06:17:03,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:17:03,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:17:03,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2023-08-27 06:17:03,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40176257128045617 [2023-08-27 06:17:03,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2023-08-27 06:17:03,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2023-08-27 06:17:03,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:03,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2023-08-27 06:17:03,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 06:17:03,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:03,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 643.0) internal successors, (2572), 4 states have internal predecessors, (2572), 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 06:17:03,173 INFO L175 Difference]: Start difference. First operand has 25 places, 13 transitions, 38 flow. Second operand 3 states and 775 transitions. [2023-08-27 06:17:03,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 11 transitions, 56 flow [2023-08-27 06:17:03,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 11 transitions, 55 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:03,173 INFO L231 Difference]: Finished difference. Result has 24 places, 11 transitions, 35 flow [2023-08-27 06:17:03,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=24, PETRI_TRANSITIONS=11} [2023-08-27 06:17:03,174 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -18 predicate places. [2023-08-27 06:17:03,174 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 11 transitions, 35 flow [2023-08-27 06:17:03,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 06:17:03,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:03,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:03,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 06:17:03,175 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-08-27 06:17:03,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:03,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1947160311, now seen corresponding path program 1 times [2023-08-27 06:17:03,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:03,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386458716] [2023-08-27 06:17:03,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:03,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:04,536 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 06:17:04,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:04,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386458716] [2023-08-27 06:17:04,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386458716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:04,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:04,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 06:17:04,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083324827] [2023-08-27 06:17:04,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:04,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:17:04,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:04,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:17:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 06:17:04,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 643 [2023-08-27 06:17:04,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 11 transitions, 35 flow. Second operand has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 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 06:17:04,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:04,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 643 [2023-08-27 06:17:04,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:04,629 INFO L124 PetriNetUnfolderBase]: 8/32 cut-off events. [2023-08-27 06:17:04,630 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 06:17:04,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 32 events. 8/32 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 75. Up to 16 conditions per place. [2023-08-27 06:17:04,630 INFO L140 encePairwiseOnDemand]: 639/643 looper letters, 10 selfloop transitions, 3 changer transitions 8/21 dead transitions. [2023-08-27 06:17:04,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 100 flow [2023-08-27 06:17:04,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:17:04,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:17:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1197 transitions. [2023-08-27 06:17:04,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723172628304821 [2023-08-27 06:17:04,633 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1197 transitions. [2023-08-27 06:17:04,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1197 transitions. [2023-08-27 06:17:04,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:04,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1197 transitions. [2023-08-27 06:17:04,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 239.4) internal successors, (1197), 5 states have internal predecessors, (1197), 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 06:17:04,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 643.0) internal successors, (3858), 6 states have internal predecessors, (3858), 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 06:17:04,638 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 643.0) internal successors, (3858), 6 states have internal predecessors, (3858), 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 06:17:04,638 INFO L175 Difference]: Start difference. First operand has 24 places, 11 transitions, 35 flow. Second operand 5 states and 1197 transitions. [2023-08-27 06:17:04,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 100 flow [2023-08-27 06:17:04,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 99 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:17:04,639 INFO L231 Difference]: Finished difference. Result has 28 places, 11 transitions, 42 flow [2023-08-27 06:17:04,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=42, PETRI_PLACES=28, PETRI_TRANSITIONS=11} [2023-08-27 06:17:04,640 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -14 predicate places. [2023-08-27 06:17:04,640 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 11 transitions, 42 flow [2023-08-27 06:17:04,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 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 06:17:04,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:17:04,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:04,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 06:17:04,641 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-08-27 06:17:04,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:17:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash 939820703, now seen corresponding path program 2 times [2023-08-27 06:17:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:17:04,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282822600] [2023-08-27 06:17:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:17:04,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:17:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:17:05,465 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 06:17:05,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:17:05,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282822600] [2023-08-27 06:17:05,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282822600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:17:05,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:17:05,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 06:17:05,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249818679] [2023-08-27 06:17:05,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:17:05,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:17:05,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:17:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:17:05,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 06:17:05,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 643 [2023-08-27 06:17:05,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 11 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 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 06:17:05,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:17:05,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 643 [2023-08-27 06:17:05,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:17:05,529 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-08-27 06:17:05,529 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 06:17:05,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 14 events. 2/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 43. Up to 6 conditions per place. [2023-08-27 06:17:05,529 INFO L140 encePairwiseOnDemand]: 639/643 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-27 06:17:05,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 12 transitions, 66 flow [2023-08-27 06:17:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:17:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:17:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1188 transitions. [2023-08-27 06:17:05,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36951788491446347 [2023-08-27 06:17:05,532 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1188 transitions. [2023-08-27 06:17:05,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1188 transitions. [2023-08-27 06:17:05,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:17:05,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1188 transitions. [2023-08-27 06:17:05,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 237.6) internal successors, (1188), 5 states have internal predecessors, (1188), 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 06:17:05,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 643.0) internal successors, (3858), 6 states have internal predecessors, (3858), 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 06:17:05,537 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 643.0) internal successors, (3858), 6 states have internal predecessors, (3858), 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 06:17:05,537 INFO L175 Difference]: Start difference. First operand has 28 places, 11 transitions, 42 flow. Second operand 5 states and 1188 transitions. [2023-08-27 06:17:05,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 12 transitions, 66 flow [2023-08-27 06:17:05,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 12 transitions, 62 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:17:05,538 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-08-27 06:17:05,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=643, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-08-27 06:17:05,538 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -14 predicate places. [2023-08-27 06:17:05,538 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-08-27 06:17:05,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 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 06:17:05,540 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 51 remaining) [2023-08-27 06:17:05,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 51 remaining) [2023-08-27 06:17:05,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 51 remaining) [2023-08-27 06:17:05,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 51 remaining) [2023-08-27 06:17:05,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 51 remaining) [2023-08-27 06:17:05,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 51 remaining) [2023-08-27 06:17:05,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 51 remaining) [2023-08-27 06:17:05,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 51 remaining) [2023-08-27 06:17:05,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 51 remaining) [2023-08-27 06:17:05,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 51 remaining) [2023-08-27 06:17:05,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 51 remaining) [2023-08-27 06:17:05,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 51 remaining) [2023-08-27 06:17:05,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 51 remaining) [2023-08-27 06:17:05,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 51 remaining) [2023-08-27 06:17:05,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 51 remaining) [2023-08-27 06:17:05,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 51 remaining) [2023-08-27 06:17:05,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 51 remaining) [2023-08-27 06:17:05,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 51 remaining) [2023-08-27 06:17:05,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 51 remaining) [2023-08-27 06:17:05,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 51 remaining) [2023-08-27 06:17:05,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 51 remaining) [2023-08-27 06:17:05,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 51 remaining) [2023-08-27 06:17:05,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 51 remaining) [2023-08-27 06:17:05,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 51 remaining) [2023-08-27 06:17:05,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (26 of 51 remaining) [2023-08-27 06:17:05,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 51 remaining) [2023-08-27 06:17:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 51 remaining) [2023-08-27 06:17:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 51 remaining) [2023-08-27 06:17:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 51 remaining) [2023-08-27 06:17:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 51 remaining) [2023-08-27 06:17:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 51 remaining) [2023-08-27 06:17:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 51 remaining) [2023-08-27 06:17:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 51 remaining) [2023-08-27 06:17:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 51 remaining) [2023-08-27 06:17:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 51 remaining) [2023-08-27 06:17:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 51 remaining) [2023-08-27 06:17:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 51 remaining) [2023-08-27 06:17:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 51 remaining) [2023-08-27 06:17:05,543 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 51 remaining) [2023-08-27 06:17:05,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 51 remaining) [2023-08-27 06:17:05,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 51 remaining) [2023-08-27 06:17:05,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 51 remaining) [2023-08-27 06:17:05,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 51 remaining) [2023-08-27 06:17:05,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 51 remaining) [2023-08-27 06:17:05,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 51 remaining) [2023-08-27 06:17:05,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 51 remaining) [2023-08-27 06:17:05,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 51 remaining) [2023-08-27 06:17:05,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 51 remaining) [2023-08-27 06:17:05,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 51 remaining) [2023-08-27 06:17:05,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 51 remaining) [2023-08-27 06:17:05,544 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 51 remaining) [2023-08-27 06:17:05,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 06:17:05,545 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:17:05,548 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 06:17:05,548 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 06:17:05,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:17:05 BasicIcfg [2023-08-27 06:17:05,550 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 06:17:05,550 INFO L158 Benchmark]: Toolchain (without parser) took 25517.73ms. Allocated memory was 362.8MB in the beginning and 673.2MB in the end (delta: 310.4MB). Free memory was 339.4MB in the beginning and 402.9MB in the end (delta: -63.4MB). Peak memory consumption was 248.6MB. Max. memory is 16.0GB. [2023-08-27 06:17:05,550 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 362.8MB. Free memory is still 339.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 06:17:05,551 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.47ms. Allocated memory is still 362.8MB. Free memory was 339.4MB in the beginning and 328.3MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 06:17:05,551 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.30ms. Allocated memory is still 362.8MB. Free memory was 328.3MB in the beginning and 325.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 06:17:05,551 INFO L158 Benchmark]: Boogie Preprocessor took 16.59ms. Allocated memory is still 362.8MB. Free memory was 325.8MB in the beginning and 324.8MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 06:17:05,551 INFO L158 Benchmark]: RCFGBuilder took 542.21ms. Allocated memory is still 362.8MB. Free memory was 324.3MB in the beginning and 302.2MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-27 06:17:05,551 INFO L158 Benchmark]: TraceAbstraction took 24745.93ms. Allocated memory was 362.8MB in the beginning and 673.2MB in the end (delta: 310.4MB). Free memory was 301.7MB in the beginning and 402.9MB in the end (delta: -101.1MB). Peak memory consumption was 210.8MB. Max. memory is 16.0GB. [2023-08-27 06:17:05,552 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 362.8MB. Free memory is still 339.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 180.47ms. Allocated memory is still 362.8MB. Free memory was 339.4MB in the beginning and 328.3MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.30ms. Allocated memory is still 362.8MB. Free memory was 328.3MB in the beginning and 325.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.59ms. Allocated memory is still 362.8MB. Free memory was 325.8MB in the beginning and 324.8MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 542.21ms. Allocated memory is still 362.8MB. Free memory was 324.3MB in the beginning and 302.2MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 24745.93ms. Allocated memory was 362.8MB in the beginning and 673.2MB in the end (delta: 310.4MB). Free memory was 301.7MB in the beginning and 402.9MB in the end (delta: -101.1MB). Peak memory consumption was 210.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.7s, 251 PlacesBefore, 42 PlacesAfterwards, 263 TransitionsBefore, 35 TransitionsAfterwards, 19292 CoEnabledTransitionPairs, 9 FixpointIterations, 59 TrivialSequentialCompositions, 234 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 44 ConcurrentYvCompositions, 19 ChoiceCompositions, 369 TotalNumberOfCompositions, 19635 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19635, independent: 19635, independent conditional: 0, independent unconditional: 19635, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11336, independent: 11336, independent conditional: 0, independent unconditional: 11336, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 19635, independent: 8299, independent conditional: 0, independent unconditional: 8299, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 11336, unknown conditional: 0, unknown unconditional: 11336] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: 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, 426 locations, 51 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: 24.6s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 20.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 223 IncrementalHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 0 mSDtfsCounter, 223 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=0, InterpolantAutomatonStates: 36, 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, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 598 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 25 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 06:17:05,574 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...