/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:42:35,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:42:35,985 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 11:42:35,994 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:42:35,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:42:36,026 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:42:36,027 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:42:36,027 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:42:36,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:42:36,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:42:36,037 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:42:36,038 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:42:36,038 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:42:36,039 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:42:36,039 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:42:36,039 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:42:36,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:42:36,040 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:42:36,040 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:42:36,040 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:42:36,041 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:42:36,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:42:36,042 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:42:36,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:42:36,042 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:42:36,043 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:42:36,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:42:36,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:42:36,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:42:36,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:42:36,045 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:42:36,045 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:42:36,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:42:36,045 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:42:36,045 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:42:36,046 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:42:36,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:42:36,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:42:36,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:42:36,367 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:42:36,368 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:42:36,369 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-27 11:42:37,510 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:42:37,797 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:42:37,797 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-27 11:42:37,821 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c004e617/e33789adc4254b4a9a66cd4697be399c/FLAG37708415f [2023-08-27 11:42:37,838 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c004e617/e33789adc4254b4a9a66cd4697be399c [2023-08-27 11:42:37,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:42:37,841 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:42:37,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:42:37,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:42:37,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:42:37,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:42:37" (1/1) ... [2023-08-27 11:42:37,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d49ca34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:42:37, skipping insertion in model container [2023-08-27 11:42:37,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:42:37" (1/1) ... [2023-08-27 11:42:37,890 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:42:38,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:42:38,233 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:42:38,262 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:42:38,264 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:42:38,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:42:38,327 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:42:38,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:42:38 WrapperNode [2023-08-27 11:42:38,328 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:42:38,329 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:42:38,329 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:42:38,329 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:42:38,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:42:38" (1/1) ... [2023-08-27 11:42:38,357 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:42:38" (1/1) ... [2023-08-27 11:42:38,390 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 161 [2023-08-27 11:42:38,391 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:42:38,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:42:38,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:42:38,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:42:38,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:42:38" (1/1) ... [2023-08-27 11:42:38,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:42:38" (1/1) ... [2023-08-27 11:42:38,415 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:42:38" (1/1) ... [2023-08-27 11:42:38,415 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:42:38" (1/1) ... [2023-08-27 11:42:38,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:42:38" (1/1) ... [2023-08-27 11:42:38,424 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:42:38" (1/1) ... [2023-08-27 11:42:38,426 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:42:38" (1/1) ... [2023-08-27 11:42:38,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:42:38" (1/1) ... [2023-08-27 11:42:38,441 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:42:38,442 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:42:38,442 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:42:38,442 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:42:38,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:42:38" (1/1) ... [2023-08-27 11:42:38,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:42:38,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:42:38,471 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 11:42:38,493 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 11:42:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:42:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:42:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:42:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:42:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:42:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:42:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:42:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:42:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:42:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:42:38,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:42:38,511 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 11:42:38,658 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:42:38,662 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:42:38,930 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:42:38,937 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:42:38,938 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-27 11:42:38,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:42:38 BoogieIcfgContainer [2023-08-27 11:42:38,939 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:42:38,941 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:42:38,941 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:42:38,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:42:38,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:42:37" (1/3) ... [2023-08-27 11:42:38,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7600ff1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:42:38, skipping insertion in model container [2023-08-27 11:42:38,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:42:38" (2/3) ... [2023-08-27 11:42:38,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7600ff1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:42:38, skipping insertion in model container [2023-08-27 11:42:38,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:42:38" (3/3) ... [2023-08-27 11:42:38,946 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-08-27 11:42:38,960 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:42:38,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-27 11:42:38,961 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:42:39,016 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 11:42:39,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 172 transitions, 352 flow [2023-08-27 11:42:39,113 INFO L124 PetriNetUnfolderBase]: 36/241 cut-off events. [2023-08-27 11:42:39,113 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:42:39,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 241 events. 36/241 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 865 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 135. Up to 6 conditions per place. [2023-08-27 11:42:39,122 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 172 transitions, 352 flow [2023-08-27 11:42:39,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 169 transitions, 346 flow [2023-08-27 11:42:39,132 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:42:39,139 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 169 transitions, 346 flow [2023-08-27 11:42:39,142 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 169 transitions, 346 flow [2023-08-27 11:42:39,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 169 transitions, 346 flow [2023-08-27 11:42:39,187 INFO L124 PetriNetUnfolderBase]: 35/238 cut-off events. [2023-08-27 11:42:39,187 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:42:39,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 238 events. 35/238 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 866 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 135. Up to 6 conditions per place. [2023-08-27 11:42:39,199 INFO L119 LiptonReduction]: Number of co-enabled transitions 9006 [2023-08-27 11:42:41,990 INFO L134 LiptonReduction]: Checked pairs total: 22887 [2023-08-27 11:42:41,991 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-27 11:42:42,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:42:42,008 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;@63ed137c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:42:42,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 11:42:42,012 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:42:42,012 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-27 11:42:42,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:42:42,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:42,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:42:42,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:42:42,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:42,017 INFO L85 PathProgramCache]: Analyzing trace with hash 20550692, now seen corresponding path program 1 times [2023-08-27 11:42:42,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:42,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324491896] [2023-08-27 11:42:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:42,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:42,248 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 11:42:42,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:42,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324491896] [2023-08-27 11:42:42,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324491896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:42,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:42,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:42:42,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065863349] [2023-08-27 11:42:42,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:42,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:42:42,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:42,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:42:42,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:42:42,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 312 [2023-08-27 11:42:42,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 75 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 11:42:42,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:42,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 312 [2023-08-27 11:42:42,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:42,484 INFO L124 PetriNetUnfolderBase]: 400/933 cut-off events. [2023-08-27 11:42:42,484 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:42:42,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1775 conditions, 933 events. 400/933 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5163 event pairs, 198 based on Foata normal form. 164/803 useless extension candidates. Maximal degree in co-relation 1735. Up to 802 conditions per place. [2023-08-27 11:42:42,493 INFO L140 encePairwiseOnDemand]: 288/312 looper letters, 65 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-27 11:42:42,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 76 transitions, 294 flow [2023-08-27 11:42:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:42:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:42:42,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-27 11:42:42,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2023-08-27 11:42:42,514 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-27 11:42:42,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-27 11:42:42,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:42,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-27 11:42:42,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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 11:42:42,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 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 11:42:42,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 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 11:42:42,533 INFO L175 Difference]: Start difference. First operand has 59 places, 75 transitions, 158 flow. Second operand 3 states and 512 transitions. [2023-08-27 11:42:42,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 76 transitions, 294 flow [2023-08-27 11:42:42,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 76 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:42:42,540 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 124 flow [2023-08-27 11:42:42,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-27 11:42:42,545 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2023-08-27 11:42:42,546 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 124 flow [2023-08-27 11:42:42,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 11:42:42,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:42,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:42,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:42:42,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:42:42,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1956672815, now seen corresponding path program 1 times [2023-08-27 11:42:42,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:42,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342717310] [2023-08-27 11:42:42,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:42,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:42,684 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 11:42:42,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:42,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342717310] [2023-08-27 11:42:42,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342717310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:42,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:42,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:42:42,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502669041] [2023-08-27 11:42:42,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:42,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:42:42,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:42,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:42:42,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:42:42,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 312 [2023-08-27 11:42:42,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 11:42:42,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:42,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 312 [2023-08-27 11:42:42,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:42,826 INFO L124 PetriNetUnfolderBase]: 276/724 cut-off events. [2023-08-27 11:42:42,826 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-27 11:42:42,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1404 conditions, 724 events. 276/724 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4118 event pairs, 160 based on Foata normal form. 0/561 useless extension candidates. Maximal degree in co-relation 1372. Up to 407 conditions per place. [2023-08-27 11:42:42,830 INFO L140 encePairwiseOnDemand]: 292/312 looper letters, 60 selfloop transitions, 7 changer transitions 1/76 dead transitions. [2023-08-27 11:42:42,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 76 transitions, 305 flow [2023-08-27 11:42:42,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:42:42,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:42:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-08-27 11:42:42,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117521367521367 [2023-08-27 11:42:42,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-08-27 11:42:42,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-08-27 11:42:42,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:42,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-08-27 11:42:42,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 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 11:42:42,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 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 11:42:42,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 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 11:42:42,837 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 124 flow. Second operand 3 states and 479 transitions. [2023-08-27 11:42:42,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 76 transitions, 305 flow [2023-08-27 11:42:42,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 301 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:42:42,840 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 182 flow [2023-08-27 11:42:42,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2023-08-27 11:42:42,841 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2023-08-27 11:42:42,841 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 182 flow [2023-08-27 11:42:42,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 11:42:42,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:42,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:42,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:42:42,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (and 16 more)] === [2023-08-27 11:42:42,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:42,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1535295802, now seen corresponding path program 1 times [2023-08-27 11:42:42,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:42,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342330814] [2023-08-27 11:42:42,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:42,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:42:42,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:42,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342330814] [2023-08-27 11:42:42,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342330814] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:42:42,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285822660] [2023-08-27 11:42:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:42,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:42:42,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:42:42,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:42:42,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 11:42:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:43,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:42:43,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:42:43,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:42:43,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:42:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:42:43,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285822660] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:42:43,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:42:43,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:42:43,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793124240] [2023-08-27 11:42:43,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:42:43,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:42:43,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:43,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:42:43,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:42:43,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 312 [2023-08-27 11:42:43,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 140.71428571428572) internal successors, (985), 7 states have internal predecessors, (985), 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 11:42:43,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:43,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 312 [2023-08-27 11:42:43,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:43,159 INFO L124 PetriNetUnfolderBase]: 12/35 cut-off events. [2023-08-27 11:42:43,159 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:42:43,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 35 events. 12/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 7/42 useless extension candidates. Maximal degree in co-relation 80. Up to 26 conditions per place. [2023-08-27 11:42:43,159 INFO L140 encePairwiseOnDemand]: 309/312 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-08-27 11:42:43,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 81 flow [2023-08-27 11:42:43,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:42:43,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:42:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2023-08-27 11:42:43,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567307692307692 [2023-08-27 11:42:43,161 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 570 transitions. [2023-08-27 11:42:43,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 570 transitions. [2023-08-27 11:42:43,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:43,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 570 transitions. [2023-08-27 11:42:43,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 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 11:42:43,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 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 11:42:43,166 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 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 11:42:43,167 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 182 flow. Second operand 4 states and 570 transitions. [2023-08-27 11:42:43,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 81 flow [2023-08-27 11:42:43,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 17 transitions, 72 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 11:42:43,168 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-27 11:42:43,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, 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=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-27 11:42:43,169 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -42 predicate places. [2023-08-27 11:42:43,169 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-27 11:42:43,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 140.71428571428572) internal successors, (985), 7 states have internal predecessors, (985), 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 11:42:43,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-27 11:42:43,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-27 11:42:43,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (16 of 19 remaining) [2023-08-27 11:42:43,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 11:42:43,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 11:42:43,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 11:42:43,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (12 of 19 remaining) [2023-08-27 11:42:43,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 11:42:43,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-27 11:42:43,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-27 11:42:43,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-08-27 11:42:43,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 11:42:43,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 11:42:43,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (5 of 19 remaining) [2023-08-27 11:42:43,177 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 11:42:43,177 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 11:42:43,177 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 11:42:43,177 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 11:42:43,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 11:42:43,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 11:42:43,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:42:43,383 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-27 11:42:43,385 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:42:43,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 172 transitions, 352 flow [2023-08-27 11:42:43,410 INFO L124 PetriNetUnfolderBase]: 36/241 cut-off events. [2023-08-27 11:42:43,410 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:42:43,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 241 events. 36/241 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 865 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 135. Up to 6 conditions per place. [2023-08-27 11:42:43,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 172 transitions, 352 flow [2023-08-27 11:42:43,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 163 transitions, 331 flow [2023-08-27 11:42:43,413 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:42:43,413 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 163 transitions, 331 flow [2023-08-27 11:42:43,414 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 163 transitions, 331 flow [2023-08-27 11:42:43,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 163 transitions, 331 flow [2023-08-27 11:42:43,430 INFO L124 PetriNetUnfolderBase]: 35/232 cut-off events. [2023-08-27 11:42:43,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:42:43,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 232 events. 35/232 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 846 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 135. Up to 6 conditions per place. [2023-08-27 11:42:43,435 INFO L119 LiptonReduction]: Number of co-enabled transitions 9006 [2023-08-27 11:42:45,831 INFO L134 LiptonReduction]: Checked pairs total: 24913 [2023-08-27 11:42:45,831 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-27 11:42:45,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:42:45,834 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;@63ed137c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:42:45,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:42:45,837 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:42:45,837 INFO L124 PetriNetUnfolderBase]: 8/44 cut-off events. [2023-08-27 11:42:45,838 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:42:45,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:45,838 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 11:42:45,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:42:45,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1987390276, now seen corresponding path program 1 times [2023-08-27 11:42:45,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:45,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952311068] [2023-08-27 11:42:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:45,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:42:45,853 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:42:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:42:45,873 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:42:45,873 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:42:45,873 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:42:45,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:42:45,874 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:42:45,874 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:42:45,875 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:42:45,875 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 11:42:45,897 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 11:42:45,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 231 transitions, 480 flow [2023-08-27 11:42:45,960 INFO L124 PetriNetUnfolderBase]: 62/406 cut-off events. [2023-08-27 11:42:45,961 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:42:45,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 406 events. 62/406 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1624 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 243. Up to 9 conditions per place. [2023-08-27 11:42:45,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 231 transitions, 480 flow [2023-08-27 11:42:45,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 231 transitions, 480 flow [2023-08-27 11:42:45,967 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:42:45,967 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 231 transitions, 480 flow [2023-08-27 11:42:45,967 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 231 transitions, 480 flow [2023-08-27 11:42:45,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 231 transitions, 480 flow [2023-08-27 11:42:45,999 INFO L124 PetriNetUnfolderBase]: 62/406 cut-off events. [2023-08-27 11:42:46,000 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:42:46,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 406 events. 62/406 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1624 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 243. Up to 9 conditions per place. [2023-08-27 11:42:46,014 INFO L119 LiptonReduction]: Number of co-enabled transitions 26676 [2023-08-27 11:42:48,850 INFO L134 LiptonReduction]: Checked pairs total: 81953 [2023-08-27 11:42:48,851 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-08-27 11:42:48,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:42:48,853 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;@63ed137c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:42:48,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-27 11:42:48,855 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:42:48,856 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-27 11:42:48,856 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:42:48,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:48,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:42:48,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-27 11:42:48,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:48,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1220220440, now seen corresponding path program 1 times [2023-08-27 11:42:48,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:48,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857632472] [2023-08-27 11:42:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:48,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:48,908 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 11:42:48,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:48,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857632472] [2023-08-27 11:42:48,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857632472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:48,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:48,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:42:48,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005936480] [2023-08-27 11:42:48,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:48,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:42:48,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:48,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:42:48,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:42:48,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 416 [2023-08-27 11:42:48,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 113 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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 11:42:48,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:48,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 416 [2023-08-27 11:42:48,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:51,089 INFO L124 PetriNetUnfolderBase]: 20056/31843 cut-off events. [2023-08-27 11:42:51,090 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-08-27 11:42:51,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62588 conditions, 31843 events. 20056/31843 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 238620 event pairs, 9108 based on Foata normal form. 3680/25058 useless extension candidates. Maximal degree in co-relation 4987. Up to 30576 conditions per place. [2023-08-27 11:42:51,280 INFO L140 encePairwiseOnDemand]: 384/416 looper letters, 92 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-27 11:42:51,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 107 transitions, 420 flow [2023-08-27 11:42:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:42:51,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:42:51,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2023-08-27 11:42:51,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488782051282052 [2023-08-27 11:42:51,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2023-08-27 11:42:51,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2023-08-27 11:42:51,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:51,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2023-08-27 11:42:51,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 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 11:42:51,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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 11:42:51,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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 11:42:51,289 INFO L175 Difference]: Start difference. First operand has 87 places, 113 transitions, 244 flow. Second operand 3 states and 685 transitions. [2023-08-27 11:42:51,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 107 transitions, 420 flow [2023-08-27 11:42:51,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 107 transitions, 420 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:42:51,296 INFO L231 Difference]: Finished difference. Result has 89 places, 86 transitions, 204 flow [2023-08-27 11:42:51,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2023-08-27 11:42:51,300 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 2 predicate places. [2023-08-27 11:42:51,301 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 204 flow [2023-08-27 11:42:51,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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 11:42:51,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:51,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:51,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 11:42:51,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-27 11:42:51,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash 739640579, now seen corresponding path program 1 times [2023-08-27 11:42:51,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:51,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724307146] [2023-08-27 11:42:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:51,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:51,381 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 11:42:51,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:51,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724307146] [2023-08-27 11:42:51,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724307146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:51,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:51,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:42:51,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825097863] [2023-08-27 11:42:51,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:51,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:42:51,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:51,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:42:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:42:51,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 416 [2023-08-27 11:42:51,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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 11:42:51,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:51,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 416 [2023-08-27 11:42:51,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:53,228 INFO L124 PetriNetUnfolderBase]: 17732/29439 cut-off events. [2023-08-27 11:42:53,228 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2023-08-27 11:42:53,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58371 conditions, 29439 events. 17732/29439 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 228232 event pairs, 10004 based on Foata normal form. 0/22099 useless extension candidates. Maximal degree in co-relation 58315. Up to 20622 conditions per place. [2023-08-27 11:42:53,364 INFO L140 encePairwiseOnDemand]: 388/416 looper letters, 108 selfloop transitions, 9 changer transitions 1/128 dead transitions. [2023-08-27 11:42:53,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 128 transitions, 528 flow [2023-08-27 11:42:53,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:42:53,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:42:53,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2023-08-27 11:42:53,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216346153846154 [2023-08-27 11:42:53,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2023-08-27 11:42:53,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2023-08-27 11:42:53,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:53,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2023-08-27 11:42:53,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 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 11:42:53,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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 11:42:53,372 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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 11:42:53,372 INFO L175 Difference]: Start difference. First operand has 89 places, 86 transitions, 204 flow. Second operand 3 states and 651 transitions. [2023-08-27 11:42:53,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 128 transitions, 528 flow [2023-08-27 11:42:53,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 128 transitions, 526 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:42:53,376 INFO L231 Difference]: Finished difference. Result has 90 places, 90 transitions, 290 flow [2023-08-27 11:42:53,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=90, PETRI_TRANSITIONS=90} [2023-08-27 11:42:53,377 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2023-08-27 11:42:53,378 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 90 transitions, 290 flow [2023-08-27 11:42:53,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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 11:42:53,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:53,378 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:42:53,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 11:42:53,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-27 11:42:53,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1074159157, now seen corresponding path program 1 times [2023-08-27 11:42:53,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:53,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117079626] [2023-08-27 11:42:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:53,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:42:53,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:53,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117079626] [2023-08-27 11:42:53,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117079626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:53,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:53,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:42:53,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820469630] [2023-08-27 11:42:53,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:53,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:42:53,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:53,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:42:53,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:42:53,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 416 [2023-08-27 11:42:53,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 90 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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 11:42:53,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:53,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 416 [2023-08-27 11:42:53,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:55,206 INFO L124 PetriNetUnfolderBase]: 17067/28705 cut-off events. [2023-08-27 11:42:55,207 INFO L125 PetriNetUnfolderBase]: For 4801/5343 co-relation queries the response was YES. [2023-08-27 11:42:55,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66489 conditions, 28705 events. 17067/28705 cut-off events. For 4801/5343 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 224357 event pairs, 11316 based on Foata normal form. 0/24827 useless extension candidates. Maximal degree in co-relation 44644. Up to 26989 conditions per place. [2023-08-27 11:42:55,320 INFO L140 encePairwiseOnDemand]: 412/416 looper letters, 84 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2023-08-27 11:42:55,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 101 transitions, 488 flow [2023-08-27 11:42:55,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:42:55,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:42:55,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-08-27 11:42:55,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080128205128205 [2023-08-27 11:42:55,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-08-27 11:42:55,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-08-27 11:42:55,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:55,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-08-27 11:42:55,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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 11:42:55,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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 11:42:55,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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 11:42:55,327 INFO L175 Difference]: Start difference. First operand has 90 places, 90 transitions, 290 flow. Second operand 3 states and 634 transitions. [2023-08-27 11:42:55,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 101 transitions, 488 flow [2023-08-27 11:42:55,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 101 transitions, 468 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:42:55,402 INFO L231 Difference]: Finished difference. Result has 88 places, 90 transitions, 282 flow [2023-08-27 11:42:55,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=88, PETRI_TRANSITIONS=90} [2023-08-27 11:42:55,403 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 1 predicate places. [2023-08-27 11:42:55,403 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 90 transitions, 282 flow [2023-08-27 11:42:55,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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 11:42:55,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:55,404 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:42:55,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 11:42:55,404 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-27 11:42:55,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:55,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1074159212, now seen corresponding path program 1 times [2023-08-27 11:42:55,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:55,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706444252] [2023-08-27 11:42:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:55,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:42:55,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:55,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706444252] [2023-08-27 11:42:55,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706444252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:42:55,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:42:55,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:42:55,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250625888] [2023-08-27 11:42:55,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:42:55,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:42:55,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:55,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:42:55,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:42:55,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 416 [2023-08-27 11:42:55,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 90 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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 11:42:55,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:55,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 416 [2023-08-27 11:42:55,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:56,947 INFO L124 PetriNetUnfolderBase]: 16978/28564 cut-off events. [2023-08-27 11:42:56,947 INFO L125 PetriNetUnfolderBase]: For 3319/3861 co-relation queries the response was YES. [2023-08-27 11:42:56,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65186 conditions, 28564 events. 16978/28564 cut-off events. For 3319/3861 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 223005 event pairs, 11316 based on Foata normal form. 42/24266 useless extension candidates. Maximal degree in co-relation 43867. Up to 26850 conditions per place. [2023-08-27 11:42:57,076 INFO L140 encePairwiseOnDemand]: 413/416 looper letters, 85 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2023-08-27 11:42:57,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 100 transitions, 476 flow [2023-08-27 11:42:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:42:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:42:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-08-27 11:42:57,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2023-08-27 11:42:57,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-08-27 11:42:57,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-08-27 11:42:57,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:57,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-08-27 11:42:57,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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 11:42:57,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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 11:42:57,091 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 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 11:42:57,091 INFO L175 Difference]: Start difference. First operand has 88 places, 90 transitions, 282 flow. Second operand 3 states and 632 transitions. [2023-08-27 11:42:57,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 100 transitions, 476 flow [2023-08-27 11:42:57,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 100 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:42:57,099 INFO L231 Difference]: Finished difference. Result has 88 places, 89 transitions, 278 flow [2023-08-27 11:42:57,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=88, PETRI_TRANSITIONS=89} [2023-08-27 11:42:57,100 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 1 predicate places. [2023-08-27 11:42:57,100 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 89 transitions, 278 flow [2023-08-27 11:42:57,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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 11:42:57,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:42:57,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:42:57,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 11:42:57,101 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-27 11:42:57,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:42:57,101 INFO L85 PathProgramCache]: Analyzing trace with hash 460537853, now seen corresponding path program 1 times [2023-08-27 11:42:57,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:42:57,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93961430] [2023-08-27 11:42:57,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:57,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:42:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:42:57,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:42:57,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93961430] [2023-08-27 11:42:57,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93961430] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:42:57,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056916340] [2023-08-27 11:42:57,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:42:57,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:42:57,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:42:57,148 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:42:57,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 11:42:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:42:57,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:42:57,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:42:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:42:57,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:42:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:42:57,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056916340] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:42:57,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:42:57,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:42:57,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240554826] [2023-08-27 11:42:57,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:42:57,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:42:57,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:42:57,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:42:57,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:42:57,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 416 [2023-08-27 11:42:57,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 89 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 186.85714285714286) internal successors, (1308), 7 states have internal predecessors, (1308), 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 11:42:57,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:42:57,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 416 [2023-08-27 11:42:57,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:42:57,335 INFO L124 PetriNetUnfolderBase]: 203/368 cut-off events. [2023-08-27 11:42:57,335 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-08-27 11:42:57,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 368 events. 203/368 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1401 event pairs, 6 based on Foata normal form. 53/418 useless extension candidates. Maximal degree in co-relation 912. Up to 251 conditions per place. [2023-08-27 11:42:57,336 INFO L140 encePairwiseOnDemand]: 413/416 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-08-27 11:42:57,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 37 transitions, 179 flow [2023-08-27 11:42:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:42:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:42:57,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 957 transitions. [2023-08-27 11:42:57,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4600961538461538 [2023-08-27 11:42:57,339 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 957 transitions. [2023-08-27 11:42:57,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 957 transitions. [2023-08-27 11:42:57,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:42:57,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 957 transitions. [2023-08-27 11:42:57,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.4) internal successors, (957), 5 states have internal predecessors, (957), 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 11:42:57,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 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 11:42:57,346 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 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 11:42:57,346 INFO L175 Difference]: Start difference. First operand has 88 places, 89 transitions, 278 flow. Second operand 5 states and 957 transitions. [2023-08-27 11:42:57,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 37 transitions, 179 flow [2023-08-27 11:42:57,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:42:57,347 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-08-27 11:42:57,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2023-08-27 11:42:57,349 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -55 predicate places. [2023-08-27 11:42:57,350 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-08-27 11:42:57,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.85714285714286) internal successors, (1308), 7 states have internal predecessors, (1308), 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 11:42:57,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2023-08-27 11:42:57,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2023-08-27 11:42:57,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2023-08-27 11:42:57,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (20 of 24 remaining) [2023-08-27 11:42:57,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2023-08-27 11:42:57,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (18 of 24 remaining) [2023-08-27 11:42:57,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2023-08-27 11:42:57,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2023-08-27 11:42:57,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (15 of 24 remaining) [2023-08-27 11:42:57,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2023-08-27 11:42:57,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2023-08-27 11:42:57,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2023-08-27 11:42:57,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (11 of 24 remaining) [2023-08-27 11:42:57,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2023-08-27 11:42:57,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2023-08-27 11:42:57,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2023-08-27 11:42:57,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2023-08-27 11:42:57,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2023-08-27 11:42:57,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2023-08-27 11:42:57,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2023-08-27 11:42:57,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2023-08-27 11:42:57,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2023-08-27 11:42:57,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2023-08-27 11:42:57,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2023-08-27 11:42:57,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 11:42:57,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-27 11:42:57,562 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-27 11:42:57,563 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:42:57,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 231 transitions, 480 flow [2023-08-27 11:42:57,606 INFO L124 PetriNetUnfolderBase]: 62/406 cut-off events. [2023-08-27 11:42:57,607 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:42:57,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 406 events. 62/406 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1624 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 243. Up to 9 conditions per place. [2023-08-27 11:42:57,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 231 transitions, 480 flow [2023-08-27 11:42:57,611 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 231 transitions, 480 flow [2023-08-27 11:42:57,611 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:42:57,612 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 231 transitions, 480 flow [2023-08-27 11:42:57,612 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 231 transitions, 480 flow [2023-08-27 11:42:57,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 231 transitions, 480 flow [2023-08-27 11:42:57,650 INFO L124 PetriNetUnfolderBase]: 62/406 cut-off events. [2023-08-27 11:42:57,650 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:42:57,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 406 events. 62/406 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1624 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 243. Up to 9 conditions per place. [2023-08-27 11:42:57,663 INFO L119 LiptonReduction]: Number of co-enabled transitions 26676 [2023-08-27 11:43:00,616 INFO L134 LiptonReduction]: Checked pairs total: 76747 [2023-08-27 11:43:00,616 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-08-27 11:43:00,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:43:00,618 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;@63ed137c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:43:00,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:43:00,625 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:43:00,625 INFO L124 PetriNetUnfolderBase]: 32/129 cut-off events. [2023-08-27 11:43:00,625 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 11:43:00,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:00,625 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 11:43:00,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:43:00,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:00,626 INFO L85 PathProgramCache]: Analyzing trace with hash -886572577, now seen corresponding path program 1 times [2023-08-27 11:43:00,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:00,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652646272] [2023-08-27 11:43:00,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:00,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:43:00,642 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:43:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:43:00,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:43:00,656 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:43:00,656 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:43:00,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 11:43:00,656 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:43:00,657 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:43:00,657 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:43:00,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 11:43:00,685 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 11:43:00,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 290 transitions, 610 flow [2023-08-27 11:43:00,752 INFO L124 PetriNetUnfolderBase]: 93/612 cut-off events. [2023-08-27 11:43:00,752 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:43:00,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 612 events. 93/612 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2617 event pairs, 1 based on Foata normal form. 0/460 useless extension candidates. Maximal degree in co-relation 414. Up to 16 conditions per place. [2023-08-27 11:43:00,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 290 transitions, 610 flow [2023-08-27 11:43:00,769 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 290 transitions, 610 flow [2023-08-27 11:43:00,769 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:43:00,769 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 290 transitions, 610 flow [2023-08-27 11:43:00,769 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 290 transitions, 610 flow [2023-08-27 11:43:00,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 290 transitions, 610 flow [2023-08-27 11:43:00,834 INFO L124 PetriNetUnfolderBase]: 93/612 cut-off events. [2023-08-27 11:43:00,834 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:43:00,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 612 events. 93/612 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2617 event pairs, 1 based on Foata normal form. 0/460 useless extension candidates. Maximal degree in co-relation 414. Up to 16 conditions per place. [2023-08-27 11:43:00,859 INFO L119 LiptonReduction]: Number of co-enabled transitions 50274 [2023-08-27 11:43:03,794 INFO L134 LiptonReduction]: Checked pairs total: 147108 [2023-08-27 11:43:03,795 INFO L136 LiptonReduction]: Total number of compositions: 232 [2023-08-27 11:43:03,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:43:03,796 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;@63ed137c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:43:03,796 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-27 11:43:03,798 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:43:03,798 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-08-27 11:43:03,798 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:43:03,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:03,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:43:03,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:43:03,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:03,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1949892801, now seen corresponding path program 1 times [2023-08-27 11:43:03,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:03,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014694604] [2023-08-27 11:43:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:03,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:03,818 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 11:43:03,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:03,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014694604] [2023-08-27 11:43:03,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014694604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:03,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:43:03,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:43:03,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996933615] [2023-08-27 11:43:03,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:03,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:43:03,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:03,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:43:03,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:43:03,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 522 [2023-08-27 11:43:03,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 150 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 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 11:43:03,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:03,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 522 [2023-08-27 11:43:03,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:51,813 INFO L124 PetriNetUnfolderBase]: 674602/919658 cut-off events. [2023-08-27 11:43:51,813 INFO L125 PetriNetUnfolderBase]: For 4185/4185 co-relation queries the response was YES. [2023-08-27 11:43:52,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1831082 conditions, 919658 events. 674602/919658 cut-off events. For 4185/4185 co-relation queries the response was YES. Maximal size of possible extension queue 19025. Compared 7395174 event pairs, 422685 based on Foata normal form. 102856/716461 useless extension candidates. Maximal degree in co-relation 78618. Up to 908074 conditions per place. [2023-08-27 11:43:55,867 INFO L140 encePairwiseOnDemand]: 480/522 looper letters, 114 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-27 11:43:55,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 131 transitions, 524 flow [2023-08-27 11:43:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:43:55,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:43:55,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 854 transitions. [2023-08-27 11:43:55,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545338441890166 [2023-08-27 11:43:55,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 854 transitions. [2023-08-27 11:43:55,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 854 transitions. [2023-08-27 11:43:55,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:55,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 854 transitions. [2023-08-27 11:43:55,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 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 11:43:55,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:43:55,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:43:55,875 INFO L175 Difference]: Start difference. First operand has 114 places, 150 transitions, 330 flow. Second operand 3 states and 854 transitions. [2023-08-27 11:43:55,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 131 transitions, 524 flow [2023-08-27 11:43:55,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 131 transitions, 524 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:43:55,880 INFO L231 Difference]: Finished difference. Result has 115 places, 112 transitions, 268 flow [2023-08-27 11:43:55,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=115, PETRI_TRANSITIONS=112} [2023-08-27 11:43:55,881 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 1 predicate places. [2023-08-27 11:43:55,881 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 112 transitions, 268 flow [2023-08-27 11:43:55,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 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 11:43:55,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:55,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:55,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 11:43:55,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:43:55,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:55,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2100050612, now seen corresponding path program 1 times [2023-08-27 11:43:55,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:55,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148876654] [2023-08-27 11:43:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:55,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:55,932 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 11:43:55,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:55,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148876654] [2023-08-27 11:43:55,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148876654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:55,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:43:55,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:43:55,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698329191] [2023-08-27 11:43:55,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:55,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:43:55,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:55,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:43:55,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:43:55,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-08-27 11:43:55,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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 11:43:55,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:55,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-08-27 11:43:55,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:44:45,790 INFO L124 PetriNetUnfolderBase]: 625361/896906 cut-off events. [2023-08-27 11:44:45,790 INFO L125 PetriNetUnfolderBase]: For 5850/5850 co-relation queries the response was YES. [2023-08-27 11:44:46,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1781063 conditions, 896906 events. 625361/896906 cut-off events. For 5850/5850 co-relation queries the response was YES. Maximal size of possible extension queue 21029. Compared 8074552 event pairs, 349750 based on Foata normal form. 0/681288 useless extension candidates. Maximal degree in co-relation 1781006. Up to 625928 conditions per place. [2023-08-27 11:44:49,717 INFO L140 encePairwiseOnDemand]: 484/522 looper letters, 145 selfloop transitions, 12 changer transitions 1/170 dead transitions. [2023-08-27 11:44:49,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 170 transitions, 707 flow [2023-08-27 11:44:49,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:44:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:44:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 815 transitions. [2023-08-27 11:44:49,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.520434227330779 [2023-08-27 11:44:49,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 815 transitions. [2023-08-27 11:44:49,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 815 transitions. [2023-08-27 11:44:49,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:44:49,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 815 transitions. [2023-08-27 11:44:49,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 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 11:44:49,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:44:49,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:44:49,725 INFO L175 Difference]: Start difference. First operand has 115 places, 112 transitions, 268 flow. Second operand 3 states and 815 transitions. [2023-08-27 11:44:49,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 170 transitions, 707 flow [2023-08-27 11:44:49,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 170 transitions, 705 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:44:49,758 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 390 flow [2023-08-27 11:44:49,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=390, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2023-08-27 11:44:49,758 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-08-27 11:44:49,758 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 390 flow [2023-08-27 11:44:49,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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 11:44:49,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:44:49,759 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:44:49,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 11:44:49,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:44:49,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:44:49,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2012702102, now seen corresponding path program 1 times [2023-08-27 11:44:49,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:44:49,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213234422] [2023-08-27 11:44:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:44:49,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:44:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:44:49,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:44:49,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:44:49,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213234422] [2023-08-27 11:44:49,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213234422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:44:49,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:44:49,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:44:49,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510960585] [2023-08-27 11:44:49,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:44:49,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:44:49,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:44:49,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:44:49,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:44:49,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 522 [2023-08-27 11:44:49,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 390 flow. Second operand has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 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 11:44:49,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:44:49,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 522 [2023-08-27 11:44:49,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:45:44,959 INFO L124 PetriNetUnfolderBase]: 610469/878046 cut-off events. [2023-08-27 11:45:44,959 INFO L125 PetriNetUnfolderBase]: For 157374/158208 co-relation queries the response was YES. [2023-08-27 11:45:46,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2069614 conditions, 878046 events. 610469/878046 cut-off events. For 157374/158208 co-relation queries the response was YES. Maximal size of possible extension queue 21069. Compared 7893223 event pairs, 408919 based on Foata normal form. 0/769576 useless extension candidates. Maximal degree in co-relation 997352. Up to 849719 conditions per place. [2023-08-27 11:45:49,511 INFO L140 encePairwiseOnDemand]: 518/522 looper letters, 116 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2023-08-27 11:45:49,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 135 transitions, 664 flow [2023-08-27 11:45:49,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:45:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:45:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 801 transitions. [2023-08-27 11:45:49,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114942528735632 [2023-08-27 11:45:49,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 801 transitions. [2023-08-27 11:45:49,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 801 transitions. [2023-08-27 11:45:49,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:45:49,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 801 transitions. [2023-08-27 11:45:49,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 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 11:45:49,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:45:49,518 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:45:49,518 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 390 flow. Second operand 3 states and 801 transitions. [2023-08-27 11:45:49,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 135 transitions, 664 flow [2023-08-27 11:46:24,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 135 transitions, 638 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:46:24,135 INFO L231 Difference]: Finished difference. Result has 114 places, 119 transitions, 376 flow [2023-08-27 11:46:24,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=376, PETRI_PLACES=114, PETRI_TRANSITIONS=119} [2023-08-27 11:46:24,135 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 0 predicate places. [2023-08-27 11:46:24,135 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 119 transitions, 376 flow [2023-08-27 11:46:24,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 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 11:46:24,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:46:24,136 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:46:24,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 11:46:24,136 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:46:24,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:46:24,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2012702171, now seen corresponding path program 1 times [2023-08-27 11:46:24,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:46:24,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084619856] [2023-08-27 11:46:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:46:24,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:46:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:46:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:46:24,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:46:24,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084619856] [2023-08-27 11:46:24,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084619856] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:46:24,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:46:24,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:46:24,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858458193] [2023-08-27 11:46:24,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:46:24,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:46:24,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:46:24,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:46:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:46:24,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 522 [2023-08-27 11:46:24,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 119 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 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 11:46:24,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:46:24,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 522 [2023-08-27 11:46:24,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:47:15,796 INFO L124 PetriNetUnfolderBase]: 609604/876825 cut-off events. [2023-08-27 11:47:15,796 INFO L125 PetriNetUnfolderBase]: For 88739/89573 co-relation queries the response was YES. [2023-08-27 11:47:17,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024207 conditions, 876825 events. 609604/876825 cut-off events. For 88739/89573 co-relation queries the response was YES. Maximal size of possible extension queue 21069. Compared 7881159 event pairs, 408900 based on Foata normal form. 320/750562 useless extension candidates. Maximal degree in co-relation 975901. Up to 848540 conditions per place. [2023-08-27 11:47:20,128 INFO L140 encePairwiseOnDemand]: 519/522 looper letters, 117 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2023-08-27 11:47:20,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 134 transitions, 646 flow [2023-08-27 11:47:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:47:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:47:20,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2023-08-27 11:47:20,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102171136653896 [2023-08-27 11:47:20,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2023-08-27 11:47:20,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2023-08-27 11:47:20,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:47:20,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2023-08-27 11:47:20,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 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 11:47:20,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:47:20,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 11:47:20,134 INFO L175 Difference]: Start difference. First operand has 114 places, 119 transitions, 376 flow. Second operand 3 states and 799 transitions. [2023-08-27 11:47:20,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 134 transitions, 646 flow [2023-08-27 11:47:20,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 134 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:47:20,258 INFO L231 Difference]: Finished difference. Result has 114 places, 118 transitions, 372 flow [2023-08-27 11:47:20,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=114, PETRI_TRANSITIONS=118} [2023-08-27 11:47:20,259 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 0 predicate places. [2023-08-27 11:47:20,259 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 118 transitions, 372 flow [2023-08-27 11:47:20,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 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 11:47:20,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:47:20,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:47:20,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 11:47:20,259 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-27 11:47:20,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:47:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash 473775977, now seen corresponding path program 1 times [2023-08-27 11:47:20,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:47:20,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811230738] [2023-08-27 11:47:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:47:20,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:47:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:47:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:47:20,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:47:20,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811230738] [2023-08-27 11:47:20,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811230738] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:47:20,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972056862] [2023-08-27 11:47:20,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:47:20,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:47:20,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:47:20,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:47:20,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 11:47:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:47:20,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:47:20,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:47:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:47:20,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:47:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:47:20,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972056862] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:47:20,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:47:20,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:47:20,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793302420] [2023-08-27 11:47:20,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:47:20,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:47:20,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:47:20,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:47:20,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:47:20,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 522 [2023-08-27 11:47:20,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 118 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 232.85714285714286) internal successors, (1630), 7 states have internal predecessors, (1630), 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 11:47:20,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:47:20,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 522 [2023-08-27 11:47:20,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:47:20,600 INFO L124 PetriNetUnfolderBase]: 2174/3302 cut-off events. [2023-08-27 11:47:20,601 INFO L125 PetriNetUnfolderBase]: For 1520/1520 co-relation queries the response was YES. [2023-08-27 11:47:20,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7983 conditions, 3302 events. 2174/3302 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 16336 event pairs, 61 based on Foata normal form. 343/3603 useless extension candidates. Maximal degree in co-relation 7968. Up to 2067 conditions per place. [2023-08-27 11:47:20,605 INFO L140 encePairwiseOnDemand]: 519/522 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2023-08-27 11:47:20,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 62 transitions, 296 flow [2023-08-27 11:47:20,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:47:20,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:47:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1442 transitions. [2023-08-27 11:47:20,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604086845466156 [2023-08-27 11:47:20,609 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1442 transitions. [2023-08-27 11:47:20,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1442 transitions. [2023-08-27 11:47:20,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:47:20,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1442 transitions. [2023-08-27 11:47:20,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 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 11:47:20,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 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 11:47:20,617 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 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 11:47:20,617 INFO L175 Difference]: Start difference. First operand has 114 places, 118 transitions, 372 flow. Second operand 6 states and 1442 transitions. [2023-08-27 11:47:20,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 62 transitions, 296 flow [2023-08-27 11:47:20,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 292 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 11:47:20,619 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-27 11:47:20,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, 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=6, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-27 11:47:20,619 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -72 predicate places. [2023-08-27 11:47:20,620 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-27 11:47:20,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 232.85714285714286) internal successors, (1630), 7 states have internal predecessors, (1630), 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 11:47:20,620 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 29 remaining) [2023-08-27 11:47:20,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-08-27 11:47:20,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-08-27 11:47:20,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (25 of 29 remaining) [2023-08-27 11:47:20,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-08-27 11:47:20,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-08-27 11:47:20,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (22 of 29 remaining) [2023-08-27 11:47:20,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (21 of 29 remaining) [2023-08-27 11:47:20,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-08-27 11:47:20,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-08-27 11:47:20,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-08-27 11:47:20,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-08-27 11:47:20,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-08-27 11:47:20,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-08-27 11:47:20,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-08-27 11:47:20,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-08-27 11:47:20,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-08-27 11:47:20,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (11 of 29 remaining) [2023-08-27 11:47:20,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-08-27 11:47:20,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-08-27 11:47:20,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-08-27 11:47:20,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-08-27 11:47:20,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-08-27 11:47:20,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-08-27 11:47:20,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-08-27 11:47:20,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-08-27 11:47:20,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (2 of 29 remaining) [2023-08-27 11:47:20,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-08-27 11:47:20,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-08-27 11:47:20,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 11:47:20,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:47:20,828 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-27 11:47:20,829 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:47:20,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 290 transitions, 610 flow [2023-08-27 11:47:20,865 INFO L124 PetriNetUnfolderBase]: 93/612 cut-off events. [2023-08-27 11:47:20,865 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:47:20,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 612 events. 93/612 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2617 event pairs, 1 based on Foata normal form. 0/460 useless extension candidates. Maximal degree in co-relation 414. Up to 16 conditions per place. [2023-08-27 11:47:20,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 290 transitions, 610 flow [2023-08-27 11:47:20,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 290 transitions, 610 flow [2023-08-27 11:47:20,872 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:47:20,872 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 290 transitions, 610 flow [2023-08-27 11:47:20,873 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 290 transitions, 610 flow [2023-08-27 11:47:20,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 290 transitions, 610 flow [2023-08-27 11:47:20,924 INFO L124 PetriNetUnfolderBase]: 93/612 cut-off events. [2023-08-27 11:47:20,924 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:47:20,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 612 events. 93/612 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2617 event pairs, 1 based on Foata normal form. 0/460 useless extension candidates. Maximal degree in co-relation 414. Up to 16 conditions per place. [2023-08-27 11:47:20,947 INFO L119 LiptonReduction]: Number of co-enabled transitions 50274 [2023-08-27 11:47:23,834 INFO L134 LiptonReduction]: Checked pairs total: 143150 [2023-08-27 11:47:23,834 INFO L136 LiptonReduction]: Total number of compositions: 232 [2023-08-27 11:47:23,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:47:23,835 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;@63ed137c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:47:23,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:47:23,845 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:47:23,845 INFO L124 PetriNetUnfolderBase]: 49/200 cut-off events. [2023-08-27 11:47:23,845 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 11:47:23,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:47:23,846 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 11:47:23,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:47:23,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:47:23,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1623862032, now seen corresponding path program 1 times [2023-08-27 11:47:23,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:47:23,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394967923] [2023-08-27 11:47:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:47:23,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:47:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:47:23,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:47:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:47:23,884 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:47:23,884 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:47:23,884 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:47:23,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 11:47:23,885 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:47:23,886 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:47:23,886 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:47:23,886 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 11:47:23,912 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 11:47:23,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 349 transitions, 742 flow [2023-08-27 11:47:23,995 INFO L124 PetriNetUnfolderBase]: 136/902 cut-off events. [2023-08-27 11:47:23,995 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 11:47:24,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 902 events. 136/902 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4214 event pairs, 6 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 632. Up to 32 conditions per place. [2023-08-27 11:47:24,003 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 349 transitions, 742 flow [2023-08-27 11:47:24,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 298 places, 349 transitions, 742 flow [2023-08-27 11:47:24,013 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:47:24,013 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 298 places, 349 transitions, 742 flow [2023-08-27 11:47:24,013 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 298 places, 349 transitions, 742 flow [2023-08-27 11:47:24,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 349 transitions, 742 flow [2023-08-27 11:47:24,113 INFO L124 PetriNetUnfolderBase]: 136/902 cut-off events. [2023-08-27 11:47:24,113 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 11:47:24,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 902 events. 136/902 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4214 event pairs, 6 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 632. Up to 32 conditions per place. [2023-08-27 11:47:24,165 INFO L119 LiptonReduction]: Number of co-enabled transitions 80712 [2023-08-27 11:47:27,237 INFO L134 LiptonReduction]: Checked pairs total: 240310 [2023-08-27 11:47:27,237 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-08-27 11:47:27,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:47:27,238 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;@63ed137c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:47:27,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-08-27 11:47:27,239 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:47:27,239 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2023-08-27 11:47:27,239 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:47:27,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:47:27,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:47:27,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:47:27,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:47:27,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1470257238, now seen corresponding path program 1 times [2023-08-27 11:47:27,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:47:27,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648600558] [2023-08-27 11:47:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:47:27,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:47:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:47:27,265 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 11:47:27,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:47:27,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648600558] [2023-08-27 11:47:27,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648600558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:47:27,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:47:27,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:47:27,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499995907] [2023-08-27 11:47:27,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:47:27,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:47:27,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:47:27,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:47:27,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:47:27,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 626 [2023-08-27 11:47:27,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 185 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 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 11:47:27,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:47:27,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 626 [2023-08-27 11:47:27,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand