/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_02-simple_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:21:52,005 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:21:52,087 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 11:21:52,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:21:52,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:21:52,123 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:21:52,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:21:52,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:21:52,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:21:52,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:21:52,133 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:21:52,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:21:52,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:21:52,134 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:21:52,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:21:52,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:21:52,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:21:52,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:21:52,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:21:52,136 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:21:52,136 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:21:52,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:21:52,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:21:52,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:21:52,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:21:52,137 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:21:52,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:21:52,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:21:52,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:21:52,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:21:52,139 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:21:52,139 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:21:52,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:21:52,140 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:21:52,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:21:52,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:21:52,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:21:52,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:21:52,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:21:52,477 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:21:52,478 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:21:52,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2023-08-27 11:21:53,648 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:21:53,919 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:21:53,920 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2023-08-27 11:21:53,934 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae29c9910/c6e5b0923a674e90a51aedcb326efee3/FLAG54312d2ff [2023-08-27 11:21:53,951 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae29c9910/c6e5b0923a674e90a51aedcb326efee3 [2023-08-27 11:21:53,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:21:53,957 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:21:53,959 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:21:53,960 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:21:53,962 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:21:53,963 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:21:53" (1/1) ... [2023-08-27 11:21:53,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2498d8c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:21:53, skipping insertion in model container [2023-08-27 11:21:53,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:21:53" (1/1) ... [2023-08-27 11:21:54,008 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:21:54,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:21:54,320 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:21:54,348 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:21:54,350 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:21:54,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:21:54,409 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:21:54,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:21:54 WrapperNode [2023-08-27 11:21:54,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:21:54,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:21:54,411 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:21:54,411 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:21:54,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:21:54" (1/1) ... [2023-08-27 11:21:54,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:21:54" (1/1) ... [2023-08-27 11:21:54,446 INFO L138 Inliner]: procedures = 170, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2023-08-27 11:21:54,446 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:21:54,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:21:54,447 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:21:54,447 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:21:54,459 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:21:54" (1/1) ... [2023-08-27 11:21:54,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:21:54" (1/1) ... [2023-08-27 11:21:54,463 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:21:54" (1/1) ... [2023-08-27 11:21:54,464 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:21:54" (1/1) ... [2023-08-27 11:21:54,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:21:54" (1/1) ... [2023-08-27 11:21:54,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:21:54" (1/1) ... [2023-08-27 11:21:54,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:21:54" (1/1) ... [2023-08-27 11:21:54,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:21:54" (1/1) ... [2023-08-27 11:21:54,484 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:21:54,484 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:21:54,485 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:21:54,485 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:21:54,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:21:54" (1/1) ... [2023-08-27 11:21:54,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:21:54,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:21:54,518 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 11:21:54,520 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 11:21:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:21:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:21:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:21:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:21:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:21:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:21:54,543 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:21:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:21:54,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:21:54,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:21:54,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:21:54,545 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 11:21:54,651 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:21:54,652 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:21:54,801 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:21:54,807 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:21:54,807 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-27 11:21:54,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:21:54 BoogieIcfgContainer [2023-08-27 11:21:54,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:21:54,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:21:54,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:21:54,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:21:54,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:21:53" (1/3) ... [2023-08-27 11:21:54,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57db4629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:21:54, skipping insertion in model container [2023-08-27 11:21:54,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:21:54" (2/3) ... [2023-08-27 11:21:54,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57db4629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:21:54, skipping insertion in model container [2023-08-27 11:21:54,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:21:54" (3/3) ... [2023-08-27 11:21:54,816 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2023-08-27 11:21:54,830 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:21:54,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 11:21:54,831 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:21:54,878 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 11:21:54,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 130 transitions, 268 flow [2023-08-27 11:21:55,015 INFO L124 PetriNetUnfolderBase]: 19/169 cut-off events. [2023-08-27 11:21:55,015 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:21:55,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 169 events. 19/169 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 398 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-08-27 11:21:55,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 130 transitions, 268 flow [2023-08-27 11:21:55,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 127 transitions, 262 flow [2023-08-27 11:21:55,031 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:21:55,038 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 127 transitions, 262 flow [2023-08-27 11:21:55,045 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 127 transitions, 262 flow [2023-08-27 11:21:55,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 127 transitions, 262 flow [2023-08-27 11:21:55,077 INFO L124 PetriNetUnfolderBase]: 18/166 cut-off events. [2023-08-27 11:21:55,077 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:21:55,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 166 events. 18/166 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 393 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-08-27 11:21:55,081 INFO L119 LiptonReduction]: Number of co-enabled transitions 3528 [2023-08-27 11:21:58,036 INFO L134 LiptonReduction]: Checked pairs total: 5892 [2023-08-27 11:21:58,036 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-27 11:21:58,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:21:58,050 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;@28acf179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:21:58,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-27 11:21:58,052 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:21:58,053 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 11:21:58,053 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:21:58,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:21:58,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:21:58,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:21:58,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:21:58,057 INFO L85 PathProgramCache]: Analyzing trace with hash 15335494, now seen corresponding path program 1 times [2023-08-27 11:21:58,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:21:58,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643857838] [2023-08-27 11:21:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:21:58,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:21:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:21:58,287 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 11:21:58,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:21:58,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643857838] [2023-08-27 11:21:58,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643857838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:21:58,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:21:58,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:21:58,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839380068] [2023-08-27 11:21:58,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:21:58,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:21:58,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:21:58,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:21:58,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:21:58,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 245 [2023-08-27 11:21:58,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 41 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 11:21:58,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:21:58,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 245 [2023-08-27 11:21:58,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:21:58,420 INFO L124 PetriNetUnfolderBase]: 108/251 cut-off events. [2023-08-27 11:21:58,420 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:21:58,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 251 events. 108/251 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1063 event pairs, 88 based on Foata normal form. 23/193 useless extension candidates. Maximal degree in co-relation 480. Up to 229 conditions per place. [2023-08-27 11:21:58,423 INFO L140 encePairwiseOnDemand]: 230/245 looper letters, 37 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-27 11:21:58,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 42 transitions, 170 flow [2023-08-27 11:21:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:21:58,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:21:58,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2023-08-27 11:21:58,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156462585034014 [2023-08-27 11:21:58,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions. [2023-08-27 11:21:58,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions. [2023-08-27 11:21:58,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:21:58,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions. [2023-08-27 11:21:58,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 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 11:21:58,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 11:21:58,446 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 11:21:58,447 INFO L175 Difference]: Start difference. First operand has 35 places, 41 transitions, 90 flow. Second operand 3 states and 379 transitions. [2023-08-27 11:21:58,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 42 transitions, 170 flow [2023-08-27 11:21:58,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:21:58,451 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 74 flow [2023-08-27 11:21:58,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-27 11:21:58,455 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-27 11:21:58,455 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 74 flow [2023-08-27 11:21:58,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 11:21:58,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:21:58,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:21:58,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:21:58,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:21:58,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:21:58,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1852515343, now seen corresponding path program 1 times [2023-08-27 11:21:58,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:21:58,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320665453] [2023-08-27 11:21:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:21:58,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:21:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:21:58,521 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 11:21:58,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:21:58,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320665453] [2023-08-27 11:21:58,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320665453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:21:58,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:21:58,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:21:58,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758414665] [2023-08-27 11:21:58,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:21:58,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:21:58,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:21:58,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:21:58,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:21:58,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 245 [2023-08-27 11:21:58,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 11:21:58,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:21:58,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 245 [2023-08-27 11:21:58,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:21:58,606 INFO L124 PetriNetUnfolderBase]: 91/242 cut-off events. [2023-08-27 11:21:58,607 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-27 11:21:58,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 242 events. 91/242 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1046 event pairs, 28 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 481. Up to 149 conditions per place. [2023-08-27 11:21:58,610 INFO L140 encePairwiseOnDemand]: 235/245 looper letters, 35 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2023-08-27 11:21:58,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 186 flow [2023-08-27 11:21:58,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:21:58,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:21:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-08-27 11:21:58,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061224489795918 [2023-08-27 11:21:58,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-08-27 11:21:58,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-08-27 11:21:58,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:21:58,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-08-27 11:21:58,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 11:21:58,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 11:21:58,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 11:21:58,625 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 74 flow. Second operand 3 states and 372 transitions. [2023-08-27 11:21:58,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 186 flow [2023-08-27 11:21:58,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:21:58,627 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 98 flow [2023-08-27 11:21:58,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-27 11:21:58,628 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-27 11:21:58,628 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 98 flow [2023-08-27 11:21:58,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 11:21:58,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:21:58,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:21:58,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:21:58,630 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:21:58,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:21:58,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2045554267, now seen corresponding path program 1 times [2023-08-27 11:21:58,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:21:58,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912637249] [2023-08-27 11:21:58,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:21:58,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:21:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:21:58,760 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 11:21:58,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:21:58,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912637249] [2023-08-27 11:21:58,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912637249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:21:58,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:21:58,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:21:58,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029440962] [2023-08-27 11:21:58,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:21:58,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:21:58,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:21:58,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:21:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:21:58,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 11:21:58,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 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 11:21:58,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:21:58,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 11:21:58,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:21:58,875 INFO L124 PetriNetUnfolderBase]: 83/219 cut-off events. [2023-08-27 11:21:58,875 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-27 11:21:58,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 219 events. 83/219 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 858 event pairs, 13 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 499. Up to 70 conditions per place. [2023-08-27 11:21:58,876 INFO L140 encePairwiseOnDemand]: 239/245 looper letters, 45 selfloop transitions, 7 changer transitions 2/57 dead transitions. [2023-08-27 11:21:58,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 57 transitions, 282 flow [2023-08-27 11:21:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:21:58,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:21:58,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 575 transitions. [2023-08-27 11:21:58,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2023-08-27 11:21:58,879 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 575 transitions. [2023-08-27 11:21:58,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 575 transitions. [2023-08-27 11:21:58,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:21:58,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 575 transitions. [2023-08-27 11:21:58,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 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 11:21:58,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 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 11:21:58,883 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 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 11:21:58,883 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 98 flow. Second operand 5 states and 575 transitions. [2023-08-27 11:21:58,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 57 transitions, 282 flow [2023-08-27 11:21:58,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 57 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:21:58,886 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 104 flow [2023-08-27 11:21:58,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-08-27 11:21:58,887 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-27 11:21:58,887 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 104 flow [2023-08-27 11:21:58,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 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 11:21:58,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:21:58,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:21:58,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 11:21:58,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:21:58,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:21:58,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2045554279, now seen corresponding path program 1 times [2023-08-27 11:21:58,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:21:58,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709512422] [2023-08-27 11:21:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:21:58,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:21:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:21:58,954 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 11:21:58,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:21:58,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709512422] [2023-08-27 11:21:58,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709512422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:21:58,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:21:58,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:21:58,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29516489] [2023-08-27 11:21:58,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:21:58,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:21:58,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:21:58,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:21:58,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:21:58,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 11:21:58,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 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 11:21:58,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:21:58,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 11:21:58,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:21:59,054 INFO L124 PetriNetUnfolderBase]: 66/176 cut-off events. [2023-08-27 11:21:59,054 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-27 11:21:59,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 176 events. 66/176 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 601 event pairs, 11 based on Foata normal form. 13/180 useless extension candidates. Maximal degree in co-relation 407. Up to 58 conditions per place. [2023-08-27 11:21:59,056 INFO L140 encePairwiseOnDemand]: 239/245 looper letters, 39 selfloop transitions, 5 changer transitions 6/52 dead transitions. [2023-08-27 11:21:59,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 256 flow [2023-08-27 11:21:59,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:21:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:21:59,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 571 transitions. [2023-08-27 11:21:59,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661224489795918 [2023-08-27 11:21:59,058 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 571 transitions. [2023-08-27 11:21:59,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 571 transitions. [2023-08-27 11:21:59,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:21:59,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 571 transitions. [2023-08-27 11:21:59,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 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 11:21:59,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 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 11:21:59,063 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 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 11:21:59,063 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 104 flow. Second operand 5 states and 571 transitions. [2023-08-27 11:21:59,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 256 flow [2023-08-27 11:21:59,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 52 transitions, 249 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:21:59,067 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 83 flow [2023-08-27 11:21:59,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=83, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2023-08-27 11:21:59,069 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-27 11:21:59,069 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 83 flow [2023-08-27 11:21:59,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 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 11:21:59,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:21:59,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:21:59,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:21:59,070 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:21:59,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:21:59,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1065694317, now seen corresponding path program 1 times [2023-08-27 11:21:59,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:21:59,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948004167] [2023-08-27 11:21:59,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:21:59,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:21:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:21:59,110 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 11:21:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:21:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948004167] [2023-08-27 11:21:59,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948004167] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:21:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90910702] [2023-08-27 11:21:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:21:59,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:21:59,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:21:59,113 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 11:21:59,146 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 11:21:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:21:59,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:21:59,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:21:59,249 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 11:21:59,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:21:59,271 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 11:21:59,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90910702] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:21:59,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:21:59,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:21:59,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33098087] [2023-08-27 11:21:59,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:21:59,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:21:59,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:21:59,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:21:59,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:21:59,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 245 [2023-08-27 11:21:59,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 83 flow. Second operand has 7 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 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 11:21:59,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:21:59,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 245 [2023-08-27 11:21:59,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:21:59,299 INFO L124 PetriNetUnfolderBase]: 16/46 cut-off events. [2023-08-27 11:21:59,299 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 11:21:59,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 46 events. 16/46 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 84 event pairs, 0 based on Foata normal form. 9/55 useless extension candidates. Maximal degree in co-relation 112. Up to 34 conditions per place. [2023-08-27 11:21:59,300 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-08-27 11:21:59,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 118 flow [2023-08-27 11:21:59,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:21:59,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:21:59,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 450 transitions. [2023-08-27 11:21:59,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2023-08-27 11:21:59,302 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 450 transitions. [2023-08-27 11:21:59,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 450 transitions. [2023-08-27 11:21:59,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:21:59,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 450 transitions. [2023-08-27 11:21:59,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.5) internal successors, (450), 4 states have internal predecessors, (450), 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 11:21:59,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 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 11:21:59,305 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 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 11:21:59,305 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 83 flow. Second operand 4 states and 450 transitions. [2023-08-27 11:21:59,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 118 flow [2023-08-27 11:21:59,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 22 transitions, 89 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-27 11:21:59,306 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-27 11:21:59,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-27 11:21:59,307 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -16 predicate places. [2023-08-27 11:21:59,307 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-27 11:21:59,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 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 11:21:59,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (12 of 13 remaining) [2023-08-27 11:21:59,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-27 11:21:59,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-27 11:21:59,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-27 11:21:59,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-27 11:21:59,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-27 11:21:59,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-27 11:21:59,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-27 11:21:59,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-27 11:21:59,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-27 11:21:59,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-27 11:21:59,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-27 11:21:59,311 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-27 11:21:59,321 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 11:21:59,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:21:59,519 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-27 11:21:59,521 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:21:59,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 130 transitions, 268 flow [2023-08-27 11:21:59,538 INFO L124 PetriNetUnfolderBase]: 19/169 cut-off events. [2023-08-27 11:21:59,539 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:21:59,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 169 events. 19/169 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 398 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-08-27 11:21:59,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 130 transitions, 268 flow [2023-08-27 11:21:59,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 121 transitions, 247 flow [2023-08-27 11:21:59,540 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:21:59,540 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 121 transitions, 247 flow [2023-08-27 11:21:59,541 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 121 transitions, 247 flow [2023-08-27 11:21:59,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 121 transitions, 247 flow [2023-08-27 11:21:59,552 INFO L124 PetriNetUnfolderBase]: 18/160 cut-off events. [2023-08-27 11:21:59,552 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:21:59,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 160 events. 18/160 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 376 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-08-27 11:21:59,554 INFO L119 LiptonReduction]: Number of co-enabled transitions 3528 [2023-08-27 11:22:02,170 INFO L134 LiptonReduction]: Checked pairs total: 5558 [2023-08-27 11:22:02,170 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-27 11:22:02,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:22:02,172 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;@28acf179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:22:02,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:22:02,175 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:22:02,175 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-08-27 11:22:02,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:22:02,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:02,175 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 11:22:02,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:22:02,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:02,176 INFO L85 PathProgramCache]: Analyzing trace with hash 865737212, now seen corresponding path program 1 times [2023-08-27 11:22:02,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:02,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530551296] [2023-08-27 11:22:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:02,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:22:02,188 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:22:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:22:02,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:22:02,206 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:22:02,206 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:22:02,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 11:22:02,207 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:22:02,207 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:22:02,207 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:22:02,208 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 11:22:02,224 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 11:22:02,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 168 transitions, 354 flow [2023-08-27 11:22:02,246 INFO L124 PetriNetUnfolderBase]: 34/283 cut-off events. [2023-08-27 11:22:02,246 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:22:02,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 283 events. 34/283 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 839 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2023-08-27 11:22:02,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 168 transitions, 354 flow [2023-08-27 11:22:02,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 168 transitions, 354 flow [2023-08-27 11:22:02,250 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:22:02,250 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 168 transitions, 354 flow [2023-08-27 11:22:02,250 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 168 transitions, 354 flow [2023-08-27 11:22:02,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 168 transitions, 354 flow [2023-08-27 11:22:02,270 INFO L124 PetriNetUnfolderBase]: 34/283 cut-off events. [2023-08-27 11:22:02,270 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:22:02,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 283 events. 34/283 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 839 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2023-08-27 11:22:02,277 INFO L119 LiptonReduction]: Number of co-enabled transitions 11016 [2023-08-27 11:22:04,918 INFO L134 LiptonReduction]: Checked pairs total: 26582 [2023-08-27 11:22:04,918 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-27 11:22:04,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:22:04,920 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;@28acf179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:22:04,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-27 11:22:04,922 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:22:04,922 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-08-27 11:22:04,922 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:22:04,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:04,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:22:04,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:04,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:04,923 INFO L85 PathProgramCache]: Analyzing trace with hash 29315849, now seen corresponding path program 1 times [2023-08-27 11:22:04,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:04,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100786075] [2023-08-27 11:22:04,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:04,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:04,956 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 11:22:04,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:04,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100786075] [2023-08-27 11:22:04,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100786075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:04,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:04,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:22:04,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149932027] [2023-08-27 11:22:04,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:04,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:22:04,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:04,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:22:04,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:22:04,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 304 [2023-08-27 11:22:04,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 71 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 11:22:04,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:04,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 304 [2023-08-27 11:22:04,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:05,546 INFO L124 PetriNetUnfolderBase]: 5189/8466 cut-off events. [2023-08-27 11:22:05,546 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-08-27 11:22:05,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16789 conditions, 8466 events. 5189/8466 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 56056 event pairs, 4952 based on Foata normal form. 1036/6515 useless extension candidates. Maximal degree in co-relation 11266. Up to 8220 conditions per place. [2023-08-27 11:22:05,592 INFO L140 encePairwiseOnDemand]: 283/304 looper letters, 60 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-27 11:22:05,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 280 flow [2023-08-27 11:22:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:22:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:22:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-27 11:22:05,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460526315789473 [2023-08-27 11:22:05,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-27 11:22:05,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-27 11:22:05,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:05,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-27 11:22:05,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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 11:22:05,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 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 11:22:05,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 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 11:22:05,599 INFO L175 Difference]: Start difference. First operand has 58 places, 71 transitions, 160 flow. Second operand 3 states and 498 transitions. [2023-08-27 11:22:05,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 280 flow [2023-08-27 11:22:05,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:22:05,602 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 142 flow [2023-08-27 11:22:05,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-27 11:22:05,604 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-08-27 11:22:05,604 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 142 flow [2023-08-27 11:22:05,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 11:22:05,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:05,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:05,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 11:22:05,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:05,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:05,605 INFO L85 PathProgramCache]: Analyzing trace with hash 859793326, now seen corresponding path program 1 times [2023-08-27 11:22:05,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:05,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857069515] [2023-08-27 11:22:05,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:05,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:05,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:22:05,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:05,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857069515] [2023-08-27 11:22:05,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857069515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:05,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:05,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:22:05,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939946697] [2023-08-27 11:22:05,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:05,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:22:05,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:05,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:22:05,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:22:05,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 304 [2023-08-27 11:22:05,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 11:22:05,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:05,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 304 [2023-08-27 11:22:05,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:06,146 INFO L124 PetriNetUnfolderBase]: 4635/7615 cut-off events. [2023-08-27 11:22:06,147 INFO L125 PetriNetUnfolderBase]: For 463/463 co-relation queries the response was YES. [2023-08-27 11:22:06,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15834 conditions, 7615 events. 4635/7615 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 49116 event pairs, 1959 based on Foata normal form. 0/5303 useless extension candidates. Maximal degree in co-relation 15746. Up to 7002 conditions per place. [2023-08-27 11:22:06,194 INFO L140 encePairwiseOnDemand]: 295/304 looper letters, 65 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-08-27 11:22:06,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 334 flow [2023-08-27 11:22:06,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:22:06,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:22:06,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-27 11:22:06,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230263157894737 [2023-08-27 11:22:06,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-27 11:22:06,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-27 11:22:06,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:06,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-27 11:22:06,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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 11:22:06,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 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 11:22:06,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 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 11:22:06,199 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 142 flow. Second operand 3 states and 477 transitions. [2023-08-27 11:22:06,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 334 flow [2023-08-27 11:22:06,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:22:06,203 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 169 flow [2023-08-27 11:22:06,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-08-27 11:22:06,204 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2023-08-27 11:22:06,204 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 169 flow [2023-08-27 11:22:06,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 11:22:06,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:06,204 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:22:06,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 11:22:06,205 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:06,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:06,205 INFO L85 PathProgramCache]: Analyzing trace with hash -582402841, now seen corresponding path program 1 times [2023-08-27 11:22:06,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:06,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779729212] [2023-08-27 11:22:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:06,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:06,247 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 11:22:06,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:06,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779729212] [2023-08-27 11:22:06,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779729212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:06,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:06,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:22:06,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673112910] [2023-08-27 11:22:06,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:06,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:22:06,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:06,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:22:06,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:22:06,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 304 [2023-08-27 11:22:06,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 169 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 11:22:06,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:06,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 304 [2023-08-27 11:22:06,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:06,709 INFO L124 PetriNetUnfolderBase]: 4307/6972 cut-off events. [2023-08-27 11:22:06,710 INFO L125 PetriNetUnfolderBase]: For 704/704 co-relation queries the response was YES. [2023-08-27 11:22:06,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15720 conditions, 6972 events. 4307/6972 cut-off events. For 704/704 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 46682 event pairs, 805 based on Foata normal form. 0/5343 useless extension candidates. Maximal degree in co-relation 11470. Up to 5496 conditions per place. [2023-08-27 11:22:06,739 INFO L140 encePairwiseOnDemand]: 300/304 looper letters, 74 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-08-27 11:22:06,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 397 flow [2023-08-27 11:22:06,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:22:06,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:22:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-27 11:22:06,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317982456140351 [2023-08-27 11:22:06,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-27 11:22:06,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-27 11:22:06,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:06,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-27 11:22:06,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 11:22:06,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 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 11:22:06,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 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 11:22:06,746 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 169 flow. Second operand 3 states and 485 transitions. [2023-08-27 11:22:06,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 397 flow [2023-08-27 11:22:06,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:22:06,749 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 178 flow [2023-08-27 11:22:06,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-27 11:22:06,751 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2023-08-27 11:22:06,752 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 178 flow [2023-08-27 11:22:06,752 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 11:22:06,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:06,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:22:06,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 11:22:06,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:06,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:06,753 INFO L85 PathProgramCache]: Analyzing trace with hash -582402871, now seen corresponding path program 1 times [2023-08-27 11:22:06,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:06,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834857785] [2023-08-27 11:22:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:06,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:06,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:22:06,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:06,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834857785] [2023-08-27 11:22:06,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834857785] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:22:06,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119140463] [2023-08-27 11:22:06,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:06,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:22:06,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:22:06,799 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 11:22:06,825 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 11:22:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:06,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 11:22:06,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:22:06,895 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 11:22:06,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:22:06,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119140463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:06,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:22:06,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 11:22:06,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058536693] [2023-08-27 11:22:06,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:06,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:22:06,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:06,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:22:06,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:22:06,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 304 [2023-08-27 11:22:06,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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 11:22:06,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:06,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 304 [2023-08-27 11:22:06,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:07,387 INFO L124 PetriNetUnfolderBase]: 3979/6461 cut-off events. [2023-08-27 11:22:07,388 INFO L125 PetriNetUnfolderBase]: For 2169/2169 co-relation queries the response was YES. [2023-08-27 11:22:07,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14953 conditions, 6461 events. 3979/6461 cut-off events. For 2169/2169 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 43303 event pairs, 768 based on Foata normal form. 178/5265 useless extension candidates. Maximal degree in co-relation 10868. Up to 4967 conditions per place. [2023-08-27 11:22:07,415 INFO L140 encePairwiseOnDemand]: 300/304 looper letters, 85 selfloop transitions, 3 changer transitions 0/95 dead transitions. [2023-08-27 11:22:07,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 95 transitions, 446 flow [2023-08-27 11:22:07,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:22:07,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:22:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 633 transitions. [2023-08-27 11:22:07,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205592105263158 [2023-08-27 11:22:07,418 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 633 transitions. [2023-08-27 11:22:07,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 633 transitions. [2023-08-27 11:22:07,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:07,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 633 transitions. [2023-08-27 11:22:07,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 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 11:22:07,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 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 11:22:07,422 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 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 11:22:07,422 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 178 flow. Second operand 4 states and 633 transitions. [2023-08-27 11:22:07,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 95 transitions, 446 flow [2023-08-27 11:22:07,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 95 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:22:07,425 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 176 flow [2023-08-27 11:22:07,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2023-08-27 11:22:07,426 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-08-27 11:22:07,426 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 176 flow [2023-08-27 11:22:07,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 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 11:22:07,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:07,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:07,433 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 11:22:07,632 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,SelfDestructingSolverStorable9 [2023-08-27 11:22:07,633 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:07,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:07,633 INFO L85 PathProgramCache]: Analyzing trace with hash 782513574, now seen corresponding path program 1 times [2023-08-27 11:22:07,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:07,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903590742] [2023-08-27 11:22:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:07,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:07,695 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 11:22:07,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:07,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903590742] [2023-08-27 11:22:07,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903590742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:07,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:07,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:22:07,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655825577] [2023-08-27 11:22:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:07,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:22:07,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:22:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:22:07,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 304 [2023-08-27 11:22:07,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 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 11:22:07,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:07,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 304 [2023-08-27 11:22:07,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:08,367 INFO L124 PetriNetUnfolderBase]: 4941/8217 cut-off events. [2023-08-27 11:22:08,367 INFO L125 PetriNetUnfolderBase]: For 2408/2408 co-relation queries the response was YES. [2023-08-27 11:22:08,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18752 conditions, 8217 events. 4941/8217 cut-off events. For 2408/2408 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 54229 event pairs, 809 based on Foata normal form. 0/6681 useless extension candidates. Maximal degree in co-relation 16807. Up to 4369 conditions per place. [2023-08-27 11:22:08,397 INFO L140 encePairwiseOnDemand]: 289/304 looper letters, 155 selfloop transitions, 19 changer transitions 0/181 dead transitions. [2023-08-27 11:22:08,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 181 transitions, 910 flow [2023-08-27 11:22:08,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:22:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:22:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1084 transitions. [2023-08-27 11:22:08,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093984962406015 [2023-08-27 11:22:08,401 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1084 transitions. [2023-08-27 11:22:08,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1084 transitions. [2023-08-27 11:22:08,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:08,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1084 transitions. [2023-08-27 11:22:08,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.85714285714286) internal successors, (1084), 7 states have internal predecessors, (1084), 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 11:22:08,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 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 11:22:08,407 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 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 11:22:08,407 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 176 flow. Second operand 7 states and 1084 transitions. [2023-08-27 11:22:08,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 181 transitions, 910 flow [2023-08-27 11:22:08,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 181 transitions, 897 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:22:08,412 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 331 flow [2023-08-27 11:22:08,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=331, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2023-08-27 11:22:08,413 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2023-08-27 11:22:08,413 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 331 flow [2023-08-27 11:22:08,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 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 11:22:08,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:08,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:08,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 11:22:08,414 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:08,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:08,414 INFO L85 PathProgramCache]: Analyzing trace with hash 782513661, now seen corresponding path program 1 times [2023-08-27 11:22:08,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:08,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685793196] [2023-08-27 11:22:08,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:08,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:08,484 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 11:22:08,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:08,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685793196] [2023-08-27 11:22:08,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685793196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:08,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:08,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:22:08,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099622043] [2023-08-27 11:22:08,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:08,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:22:08,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:08,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:22:08,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:22:08,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 304 [2023-08-27 11:22:08,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 331 flow. Second operand has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 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 11:22:08,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:08,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 304 [2023-08-27 11:22:08,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:09,197 INFO L124 PetriNetUnfolderBase]: 4639/7884 cut-off events. [2023-08-27 11:22:09,197 INFO L125 PetriNetUnfolderBase]: For 6837/6837 co-relation queries the response was YES. [2023-08-27 11:22:09,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21776 conditions, 7884 events. 4639/7884 cut-off events. For 6837/6837 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 52843 event pairs, 751 based on Foata normal form. 303/7601 useless extension candidates. Maximal degree in co-relation 19671. Up to 4495 conditions per place. [2023-08-27 11:22:09,229 INFO L140 encePairwiseOnDemand]: 289/304 looper letters, 158 selfloop transitions, 24 changer transitions 0/189 dead transitions. [2023-08-27 11:22:09,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 189 transitions, 1098 flow [2023-08-27 11:22:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:22:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:22:09,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1081 transitions. [2023-08-27 11:22:09,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079887218045113 [2023-08-27 11:22:09,232 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1081 transitions. [2023-08-27 11:22:09,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1081 transitions. [2023-08-27 11:22:09,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:09,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1081 transitions. [2023-08-27 11:22:09,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.42857142857142) internal successors, (1081), 7 states have internal predecessors, (1081), 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 11:22:09,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 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 11:22:09,239 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 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 11:22:09,239 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 331 flow. Second operand 7 states and 1081 transitions. [2023-08-27 11:22:09,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 189 transitions, 1098 flow [2023-08-27 11:22:09,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 189 transitions, 1094 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:22:09,261 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 521 flow [2023-08-27 11:22:09,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=521, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2023-08-27 11:22:09,262 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2023-08-27 11:22:09,262 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 521 flow [2023-08-27 11:22:09,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 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 11:22:09,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:09,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:09,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 11:22:09,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:09,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:09,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1404548196, now seen corresponding path program 1 times [2023-08-27 11:22:09,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:09,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817472282] [2023-08-27 11:22:09,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:09,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:09,303 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 11:22:09,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:09,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817472282] [2023-08-27 11:22:09,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817472282] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:22:09,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151399259] [2023-08-27 11:22:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:09,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:22:09,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:22:09,309 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 11:22:09,311 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 11:22:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:09,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:22:09,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:22:09,396 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 11:22:09,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:22:09,414 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 11:22:09,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151399259] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:22:09,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:22:09,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:22:09,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694634197] [2023-08-27 11:22:09,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:22:09,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:22:09,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:09,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:22:09,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:22:09,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 304 [2023-08-27 11:22:09,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 521 flow. Second operand has 7 states, 7 states have (on average 139.85714285714286) internal successors, (979), 7 states have internal predecessors, (979), 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 11:22:09,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:09,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 304 [2023-08-27 11:22:09,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:09,597 INFO L124 PetriNetUnfolderBase]: 956/1927 cut-off events. [2023-08-27 11:22:09,597 INFO L125 PetriNetUnfolderBase]: For 4780/4780 co-relation queries the response was YES. [2023-08-27 11:22:09,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6695 conditions, 1927 events. 956/1927 cut-off events. For 4780/4780 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 12797 event pairs, 120 based on Foata normal form. 240/2166 useless extension candidates. Maximal degree in co-relation 6266. Up to 1232 conditions per place. [2023-08-27 11:22:09,607 INFO L140 encePairwiseOnDemand]: 301/304 looper letters, 126 selfloop transitions, 3 changer transitions 0/135 dead transitions. [2023-08-27 11:22:09,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 135 transitions, 1201 flow [2023-08-27 11:22:09,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:22:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:22:09,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 756 transitions. [2023-08-27 11:22:09,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49736842105263157 [2023-08-27 11:22:09,609 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 756 transitions. [2023-08-27 11:22:09,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 756 transitions. [2023-08-27 11:22:09,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:09,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 756 transitions. [2023-08-27 11:22:09,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:22:09,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 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 11:22:09,614 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 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 11:22:09,614 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 521 flow. Second operand 5 states and 756 transitions. [2023-08-27 11:22:09,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 135 transitions, 1201 flow [2023-08-27 11:22:09,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 135 transitions, 1173 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-27 11:22:09,622 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 470 flow [2023-08-27 11:22:09,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=470, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2023-08-27 11:22:09,623 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2023-08-27 11:22:09,623 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 470 flow [2023-08-27 11:22:09,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.85714285714286) internal successors, (979), 7 states have internal predecessors, (979), 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 11:22:09,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:09,623 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:09,633 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 11:22:09,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:22:09,829 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:09,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:09,829 INFO L85 PathProgramCache]: Analyzing trace with hash 102513073, now seen corresponding path program 1 times [2023-08-27 11:22:09,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:09,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785759778] [2023-08-27 11:22:09,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:09,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:22:09,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:09,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785759778] [2023-08-27 11:22:09,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785759778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:09,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:09,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:22:09,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902516443] [2023-08-27 11:22:09,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:09,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:22:09,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:09,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:22:09,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:22:09,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 304 [2023-08-27 11:22:09,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 470 flow. Second operand has 5 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 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 11:22:09,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:09,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 304 [2023-08-27 11:22:09,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:10,097 INFO L124 PetriNetUnfolderBase]: 1050/1855 cut-off events. [2023-08-27 11:22:10,098 INFO L125 PetriNetUnfolderBase]: For 4935/4935 co-relation queries the response was YES. [2023-08-27 11:22:10,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6674 conditions, 1855 events. 1050/1855 cut-off events. For 4935/4935 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10678 event pairs, 235 based on Foata normal form. 51/1904 useless extension candidates. Maximal degree in co-relation 6548. Up to 1206 conditions per place. [2023-08-27 11:22:10,107 INFO L140 encePairwiseOnDemand]: 291/304 looper letters, 83 selfloop transitions, 22 changer transitions 1/112 dead transitions. [2023-08-27 11:22:10,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 112 transitions, 913 flow [2023-08-27 11:22:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:22:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:22:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 857 transitions. [2023-08-27 11:22:10,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46984649122807015 [2023-08-27 11:22:10,110 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 857 transitions. [2023-08-27 11:22:10,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 857 transitions. [2023-08-27 11:22:10,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:10,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 857 transitions. [2023-08-27 11:22:10,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.83333333333334) internal successors, (857), 6 states have internal predecessors, (857), 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 11:22:10,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 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 11:22:10,115 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 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 11:22:10,115 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 470 flow. Second operand 6 states and 857 transitions. [2023-08-27 11:22:10,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 112 transitions, 913 flow [2023-08-27 11:22:10,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 888 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-27 11:22:10,126 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 647 flow [2023-08-27 11:22:10,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=647, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2023-08-27 11:22:10,127 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 19 predicate places. [2023-08-27 11:22:10,127 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 647 flow [2023-08-27 11:22:10,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 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 11:22:10,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:10,128 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:10,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 11:22:10,128 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:10,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:10,128 INFO L85 PathProgramCache]: Analyzing trace with hash 102513072, now seen corresponding path program 1 times [2023-08-27 11:22:10,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:10,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430895332] [2023-08-27 11:22:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:10,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:22:10,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:10,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430895332] [2023-08-27 11:22:10,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430895332] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:10,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:10,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:22:10,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931739023] [2023-08-27 11:22:10,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:10,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:22:10,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:10,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:22:10,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:22:10,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 304 [2023-08-27 11:22:10,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 647 flow. Second operand has 5 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 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 11:22:10,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:10,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 304 [2023-08-27 11:22:10,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:10,425 INFO L124 PetriNetUnfolderBase]: 899/1608 cut-off events. [2023-08-27 11:22:10,425 INFO L125 PetriNetUnfolderBase]: For 5360/5360 co-relation queries the response was YES. [2023-08-27 11:22:10,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5893 conditions, 1608 events. 899/1608 cut-off events. For 5360/5360 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8931 event pairs, 202 based on Foata normal form. 51/1657 useless extension candidates. Maximal degree in co-relation 5772. Up to 1047 conditions per place. [2023-08-27 11:22:10,433 INFO L140 encePairwiseOnDemand]: 291/304 looper letters, 75 selfloop transitions, 19 changer transitions 4/104 dead transitions. [2023-08-27 11:22:10,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 104 transitions, 894 flow [2023-08-27 11:22:10,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:22:10,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:22:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 856 transitions. [2023-08-27 11:22:10,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692982456140351 [2023-08-27 11:22:10,435 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 856 transitions. [2023-08-27 11:22:10,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 856 transitions. [2023-08-27 11:22:10,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:10,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 856 transitions. [2023-08-27 11:22:10,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.66666666666666) internal successors, (856), 6 states have internal predecessors, (856), 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 11:22:10,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 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 11:22:10,440 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 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 11:22:10,440 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 647 flow. Second operand 6 states and 856 transitions. [2023-08-27 11:22:10,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 104 transitions, 894 flow [2023-08-27 11:22:10,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 104 transitions, 868 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 11:22:10,453 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 570 flow [2023-08-27 11:22:10,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=570, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2023-08-27 11:22:10,454 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 22 predicate places. [2023-08-27 11:22:10,454 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 570 flow [2023-08-27 11:22:10,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 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 11:22:10,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:10,455 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:10,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 11:22:10,455 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:10,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:10,455 INFO L85 PathProgramCache]: Analyzing trace with hash 633606766, now seen corresponding path program 1 times [2023-08-27 11:22:10,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:10,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685460658] [2023-08-27 11:22:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:10,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:22:10,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:10,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685460658] [2023-08-27 11:22:10,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685460658] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:22:10,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293496763] [2023-08-27 11:22:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:10,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:22:10,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:22:10,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:22:10,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 11:22:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:10,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 11:22:10,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:22:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:22:10,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:22:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:22:10,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293496763] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:22:10,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:22:10,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-27 11:22:10,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982131495] [2023-08-27 11:22:10,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:22:10,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 11:22:10,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:10,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 11:22:10,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-27 11:22:10,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 304 [2023-08-27 11:22:10,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 570 flow. Second operand has 12 states, 12 states have (on average 128.58333333333334) internal successors, (1543), 12 states have internal predecessors, (1543), 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 11:22:10,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:10,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 304 [2023-08-27 11:22:10,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:11,188 INFO L124 PetriNetUnfolderBase]: 1152/2045 cut-off events. [2023-08-27 11:22:11,188 INFO L125 PetriNetUnfolderBase]: For 6730/6730 co-relation queries the response was YES. [2023-08-27 11:22:11,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7437 conditions, 2045 events. 1152/2045 cut-off events. For 6730/6730 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11971 event pairs, 71 based on Foata normal form. 66/2109 useless extension candidates. Maximal degree in co-relation 7315. Up to 435 conditions per place. [2023-08-27 11:22:11,199 INFO L140 encePairwiseOnDemand]: 290/304 looper letters, 133 selfloop transitions, 56 changer transitions 19/214 dead transitions. [2023-08-27 11:22:11,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 214 transitions, 1708 flow [2023-08-27 11:22:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 11:22:11,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 11:22:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2818 transitions. [2023-08-27 11:22:11,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44141604010025065 [2023-08-27 11:22:11,206 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2818 transitions. [2023-08-27 11:22:11,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2818 transitions. [2023-08-27 11:22:11,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:11,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2818 transitions. [2023-08-27 11:22:11,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 134.1904761904762) internal successors, (2818), 21 states have internal predecessors, (2818), 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 11:22:11,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 304.0) internal successors, (6688), 22 states have internal predecessors, (6688), 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 11:22:11,234 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 304.0) internal successors, (6688), 22 states have internal predecessors, (6688), 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 11:22:11,234 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 570 flow. Second operand 21 states and 2818 transitions. [2023-08-27 11:22:11,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 214 transitions, 1708 flow [2023-08-27 11:22:11,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 214 transitions, 1695 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:22:11,249 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 987 flow [2023-08-27 11:22:11,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=987, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2023-08-27 11:22:11,250 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places. [2023-08-27 11:22:11,250 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 987 flow [2023-08-27 11:22:11,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 128.58333333333334) internal successors, (1543), 12 states have internal predecessors, (1543), 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 11:22:11,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:11,251 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:11,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 11:22:11,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 11:22:11,457 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:11,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:11,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1383230783, now seen corresponding path program 1 times [2023-08-27 11:22:11,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:11,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407592394] [2023-08-27 11:22:11,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:11,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:22:11,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:11,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407592394] [2023-08-27 11:22:11,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407592394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:11,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:11,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:22:11,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65957220] [2023-08-27 11:22:11,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:11,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:22:11,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:22:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:22:11,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 304 [2023-08-27 11:22:11,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 987 flow. Second operand has 7 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 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 11:22:11,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:11,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 304 [2023-08-27 11:22:11,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:11,889 INFO L124 PetriNetUnfolderBase]: 1121/2016 cut-off events. [2023-08-27 11:22:11,890 INFO L125 PetriNetUnfolderBase]: For 10235/10235 co-relation queries the response was YES. [2023-08-27 11:22:11,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8272 conditions, 2016 events. 1121/2016 cut-off events. For 10235/10235 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12065 event pairs, 235 based on Foata normal form. 30/2044 useless extension candidates. Maximal degree in co-relation 8136. Up to 1356 conditions per place. [2023-08-27 11:22:11,904 INFO L140 encePairwiseOnDemand]: 291/304 looper letters, 104 selfloop transitions, 28 changer transitions 10/148 dead transitions. [2023-08-27 11:22:11,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 148 transitions, 1534 flow [2023-08-27 11:22:11,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:22:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:22:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1354 transitions. [2023-08-27 11:22:11,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453947368421053 [2023-08-27 11:22:11,908 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1354 transitions. [2023-08-27 11:22:11,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1354 transitions. [2023-08-27 11:22:11,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:11,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1354 transitions. [2023-08-27 11:22:11,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 135.4) internal successors, (1354), 10 states have internal predecessors, (1354), 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 11:22:11,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 304.0) internal successors, (3344), 11 states have internal predecessors, (3344), 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 11:22:11,915 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 304.0) internal successors, (3344), 11 states have internal predecessors, (3344), 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 11:22:11,915 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 987 flow. Second operand 10 states and 1354 transitions. [2023-08-27 11:22:11,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 148 transitions, 1534 flow [2023-08-27 11:22:11,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 148 transitions, 1459 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-27 11:22:11,951 INFO L231 Difference]: Finished difference. Result has 110 places, 92 transitions, 999 flow [2023-08-27 11:22:11,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=999, PETRI_PLACES=110, PETRI_TRANSITIONS=92} [2023-08-27 11:22:11,951 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 52 predicate places. [2023-08-27 11:22:11,951 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 92 transitions, 999 flow [2023-08-27 11:22:11,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 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 11:22:11,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:11,952 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:11,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 11:22:11,952 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:11,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:11,953 INFO L85 PathProgramCache]: Analyzing trace with hash 633606732, now seen corresponding path program 1 times [2023-08-27 11:22:11,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:11,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440724468] [2023-08-27 11:22:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:11,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:22:12,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:12,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440724468] [2023-08-27 11:22:12,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440724468] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:22:12,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700250423] [2023-08-27 11:22:12,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:12,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:22:12,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:22:12,033 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:22:12,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 11:22:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:12,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 11:22:12,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:22:12,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:22:12,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:22:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:22:12,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700250423] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:22:12,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:22:12,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-27 11:22:12,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803185576] [2023-08-27 11:22:12,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:22:12,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 11:22:12,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:12,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 11:22:12,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-08-27 11:22:12,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 304 [2023-08-27 11:22:12,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 92 transitions, 999 flow. Second operand has 12 states, 12 states have (on average 128.58333333333334) internal successors, (1543), 12 states have internal predecessors, (1543), 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 11:22:12,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:12,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 304 [2023-08-27 11:22:12,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:12,727 INFO L124 PetriNetUnfolderBase]: 993/1832 cut-off events. [2023-08-27 11:22:12,728 INFO L125 PetriNetUnfolderBase]: For 9295/9295 co-relation queries the response was YES. [2023-08-27 11:22:12,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7531 conditions, 1832 events. 993/1832 cut-off events. For 9295/9295 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11024 event pairs, 47 based on Foata normal form. 27/1857 useless extension candidates. Maximal degree in co-relation 7392. Up to 286 conditions per place. [2023-08-27 11:22:12,742 INFO L140 encePairwiseOnDemand]: 289/304 looper letters, 123 selfloop transitions, 54 changer transitions 13/196 dead transitions. [2023-08-27 11:22:12,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 196 transitions, 1839 flow [2023-08-27 11:22:12,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 11:22:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 11:22:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2410 transitions. [2023-08-27 11:22:12,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44042397660818716 [2023-08-27 11:22:12,748 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2410 transitions. [2023-08-27 11:22:12,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2410 transitions. [2023-08-27 11:22:12,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:12,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2410 transitions. [2023-08-27 11:22:12,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.88888888888889) internal successors, (2410), 18 states have internal predecessors, (2410), 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 11:22:12,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 304.0) internal successors, (5776), 19 states have internal predecessors, (5776), 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 11:22:12,760 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 304.0) internal successors, (5776), 19 states have internal predecessors, (5776), 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 11:22:12,760 INFO L175 Difference]: Start difference. First operand has 110 places, 92 transitions, 999 flow. Second operand 18 states and 2410 transitions. [2023-08-27 11:22:12,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 196 transitions, 1839 flow [2023-08-27 11:22:12,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 196 transitions, 1715 flow, removed 34 selfloop flow, removed 6 redundant places. [2023-08-27 11:22:12,800 INFO L231 Difference]: Finished difference. Result has 118 places, 91 transitions, 992 flow [2023-08-27 11:22:12,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=992, PETRI_PLACES=118, PETRI_TRANSITIONS=91} [2023-08-27 11:22:12,801 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2023-08-27 11:22:12,801 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 91 transitions, 992 flow [2023-08-27 11:22:12,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 128.58333333333334) internal successors, (1543), 12 states have internal predecessors, (1543), 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 11:22:12,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:12,802 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:12,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 11:22:13,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 11:22:13,007 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:13,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:13,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1593915092, now seen corresponding path program 1 times [2023-08-27 11:22:13,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:13,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782285218] [2023-08-27 11:22:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:13,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:22:13,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:13,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782285218] [2023-08-27 11:22:13,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782285218] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:13,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:13,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:22:13,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100016660] [2023-08-27 11:22:13,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:13,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:22:13,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:13,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:22:13,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:22:13,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 304 [2023-08-27 11:22:13,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 91 transitions, 992 flow. Second operand has 7 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 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 11:22:13,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:13,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 304 [2023-08-27 11:22:13,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:13,427 INFO L124 PetriNetUnfolderBase]: 958/1755 cut-off events. [2023-08-27 11:22:13,427 INFO L125 PetriNetUnfolderBase]: For 8790/8790 co-relation queries the response was YES. [2023-08-27 11:22:13,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6955 conditions, 1755 events. 958/1755 cut-off events. For 8790/8790 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10329 event pairs, 112 based on Foata normal form. 33/1786 useless extension candidates. Maximal degree in co-relation 6815. Up to 826 conditions per place. [2023-08-27 11:22:13,438 INFO L140 encePairwiseOnDemand]: 292/304 looper letters, 100 selfloop transitions, 46 changer transitions 1/153 dead transitions. [2023-08-27 11:22:13,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 153 transitions, 1424 flow [2023-08-27 11:22:13,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:22:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:22:13,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1875 transitions. [2023-08-27 11:22:13,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405545112781955 [2023-08-27 11:22:13,441 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1875 transitions. [2023-08-27 11:22:13,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1875 transitions. [2023-08-27 11:22:13,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:13,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1875 transitions. [2023-08-27 11:22:13,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 133.92857142857142) internal successors, (1875), 14 states have internal predecessors, (1875), 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 11:22:13,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 304.0) internal successors, (4560), 15 states have internal predecessors, (4560), 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 11:22:13,449 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 304.0) internal successors, (4560), 15 states have internal predecessors, (4560), 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 11:22:13,450 INFO L175 Difference]: Start difference. First operand has 118 places, 91 transitions, 992 flow. Second operand 14 states and 1875 transitions. [2023-08-27 11:22:13,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 153 transitions, 1424 flow [2023-08-27 11:22:13,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 153 transitions, 1213 flow, removed 18 selfloop flow, removed 24 redundant places. [2023-08-27 11:22:13,479 INFO L231 Difference]: Finished difference. Result has 106 places, 87 transitions, 776 flow [2023-08-27 11:22:13,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=776, PETRI_PLACES=106, PETRI_TRANSITIONS=87} [2023-08-27 11:22:13,479 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 48 predicate places. [2023-08-27 11:22:13,479 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 87 transitions, 776 flow [2023-08-27 11:22:13,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 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 11:22:13,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:13,480 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:13,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 11:22:13,480 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:13,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:13,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1587168959, now seen corresponding path program 2 times [2023-08-27 11:22:13,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:13,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322805554] [2023-08-27 11:22:13,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:13,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:22:13,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:13,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322805554] [2023-08-27 11:22:13,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322805554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:13,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:13,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:22:13,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996570113] [2023-08-27 11:22:13,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:13,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:22:13,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:13,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:22:13,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:22:13,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 304 [2023-08-27 11:22:13,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 87 transitions, 776 flow. Second operand has 7 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 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 11:22:13,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:13,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 304 [2023-08-27 11:22:13,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:13,836 INFO L124 PetriNetUnfolderBase]: 881/1624 cut-off events. [2023-08-27 11:22:13,836 INFO L125 PetriNetUnfolderBase]: For 5057/5057 co-relation queries the response was YES. [2023-08-27 11:22:13,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5865 conditions, 1624 events. 881/1624 cut-off events. For 5057/5057 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9393 event pairs, 182 based on Foata normal form. 33/1646 useless extension candidates. Maximal degree in co-relation 5739. Up to 931 conditions per place. [2023-08-27 11:22:13,841 INFO L140 encePairwiseOnDemand]: 292/304 looper letters, 95 selfloop transitions, 28 changer transitions 9/138 dead transitions. [2023-08-27 11:22:13,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 138 transitions, 1149 flow [2023-08-27 11:22:13,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:22:13,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:22:13,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1613 transitions. [2023-08-27 11:22:13,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44216008771929827 [2023-08-27 11:22:13,844 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1613 transitions. [2023-08-27 11:22:13,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1613 transitions. [2023-08-27 11:22:13,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:13,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1613 transitions. [2023-08-27 11:22:13,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.41666666666666) internal successors, (1613), 12 states have internal predecessors, (1613), 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 11:22:13,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 304.0) internal successors, (3952), 13 states have internal predecessors, (3952), 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 11:22:13,851 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 304.0) internal successors, (3952), 13 states have internal predecessors, (3952), 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 11:22:13,851 INFO L175 Difference]: Start difference. First operand has 106 places, 87 transitions, 776 flow. Second operand 12 states and 1613 transitions. [2023-08-27 11:22:13,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 138 transitions, 1149 flow [2023-08-27 11:22:13,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 138 transitions, 1010 flow, removed 10 selfloop flow, removed 15 redundant places. [2023-08-27 11:22:13,868 INFO L231 Difference]: Finished difference. Result has 100 places, 74 transitions, 531 flow [2023-08-27 11:22:13,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=531, PETRI_PLACES=100, PETRI_TRANSITIONS=74} [2023-08-27 11:22:13,869 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2023-08-27 11:22:13,869 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 74 transitions, 531 flow [2023-08-27 11:22:13,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 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 11:22:13,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:13,869 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:13,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 11:22:13,869 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:13,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:13,870 INFO L85 PathProgramCache]: Analyzing trace with hash 809962627, now seen corresponding path program 1 times [2023-08-27 11:22:13,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:13,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071745912] [2023-08-27 11:22:13,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:13,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:22:13,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:13,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071745912] [2023-08-27 11:22:13,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071745912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:13,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:13,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:22:13,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46424956] [2023-08-27 11:22:13,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:13,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:22:13,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:13,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:22:13,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:22:13,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 304 [2023-08-27 11:22:13,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 74 transitions, 531 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:22:13,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:13,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 304 [2023-08-27 11:22:13,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:14,054 INFO L124 PetriNetUnfolderBase]: 664/1236 cut-off events. [2023-08-27 11:22:14,054 INFO L125 PetriNetUnfolderBase]: For 2546/2546 co-relation queries the response was YES. [2023-08-27 11:22:14,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4026 conditions, 1236 events. 664/1236 cut-off events. For 2546/2546 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6674 event pairs, 337 based on Foata normal form. 24/1260 useless extension candidates. Maximal degree in co-relation 3502. Up to 800 conditions per place. [2023-08-27 11:22:14,060 INFO L140 encePairwiseOnDemand]: 296/304 looper letters, 66 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2023-08-27 11:22:14,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 81 transitions, 655 flow [2023-08-27 11:22:14,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:22:14,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:22:14,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-08-27 11:22:14,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46271929824561403 [2023-08-27 11:22:14,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-08-27 11:22:14,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-08-27 11:22:14,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:14,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-08-27 11:22:14,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 11:22:14,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 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 11:22:14,065 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 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 11:22:14,065 INFO L175 Difference]: Start difference. First operand has 100 places, 74 transitions, 531 flow. Second operand 3 states and 422 transitions. [2023-08-27 11:22:14,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 81 transitions, 655 flow [2023-08-27 11:22:14,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 593 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-08-27 11:22:14,071 INFO L231 Difference]: Finished difference. Result has 81 places, 62 transitions, 384 flow [2023-08-27 11:22:14,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=81, PETRI_TRANSITIONS=62} [2023-08-27 11:22:14,071 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-08-27 11:22:14,072 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 62 transitions, 384 flow [2023-08-27 11:22:14,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:22:14,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:14,072 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:14,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 11:22:14,072 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:14,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:14,072 INFO L85 PathProgramCache]: Analyzing trace with hash -968884737, now seen corresponding path program 2 times [2023-08-27 11:22:14,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:14,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407442409] [2023-08-27 11:22:14,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:14,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:22:14,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:14,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407442409] [2023-08-27 11:22:14,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407442409] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:14,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:14,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:22:14,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183769494] [2023-08-27 11:22:14,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:14,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:22:14,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:14,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:22:14,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:22:14,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 304 [2023-08-27 11:22:14,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 62 transitions, 384 flow. Second operand has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 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 11:22:14,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:14,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 304 [2023-08-27 11:22:14,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:14,346 INFO L124 PetriNetUnfolderBase]: 591/1132 cut-off events. [2023-08-27 11:22:14,346 INFO L125 PetriNetUnfolderBase]: For 2197/2197 co-relation queries the response was YES. [2023-08-27 11:22:14,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 1132 events. 591/1132 cut-off events. For 2197/2197 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6247 event pairs, 140 based on Foata normal form. 15/1133 useless extension candidates. Maximal degree in co-relation 3885. Up to 699 conditions per place. [2023-08-27 11:22:14,350 INFO L140 encePairwiseOnDemand]: 295/304 looper letters, 79 selfloop transitions, 15 changer transitions 5/105 dead transitions. [2023-08-27 11:22:14,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 105 transitions, 816 flow [2023-08-27 11:22:14,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:22:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:22:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1198 transitions. [2023-08-27 11:22:14,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4378654970760234 [2023-08-27 11:22:14,351 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1198 transitions. [2023-08-27 11:22:14,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1198 transitions. [2023-08-27 11:22:14,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:14,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1198 transitions. [2023-08-27 11:22:14,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.11111111111111) internal successors, (1198), 9 states have internal predecessors, (1198), 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 11:22:14,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 304.0) internal successors, (3040), 10 states have internal predecessors, (3040), 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 11:22:14,355 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 304.0) internal successors, (3040), 10 states have internal predecessors, (3040), 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 11:22:14,356 INFO L175 Difference]: Start difference. First operand has 81 places, 62 transitions, 384 flow. Second operand 9 states and 1198 transitions. [2023-08-27 11:22:14,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 105 transitions, 816 flow [2023-08-27 11:22:14,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 105 transitions, 792 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 11:22:14,361 INFO L231 Difference]: Finished difference. Result has 89 places, 66 transitions, 452 flow [2023-08-27 11:22:14,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=452, PETRI_PLACES=89, PETRI_TRANSITIONS=66} [2023-08-27 11:22:14,361 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2023-08-27 11:22:14,361 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 66 transitions, 452 flow [2023-08-27 11:22:14,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 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 11:22:14,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:14,362 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:14,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 11:22:14,362 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:14,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:14,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1539749882, now seen corresponding path program 1 times [2023-08-27 11:22:14,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:14,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817465041] [2023-08-27 11:22:14,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:14,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:22:14,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:14,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817465041] [2023-08-27 11:22:14,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817465041] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:14,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:14,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:22:14,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666351239] [2023-08-27 11:22:14,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:14,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:22:14,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:14,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:22:14,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:22:14,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 304 [2023-08-27 11:22:14,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 66 transitions, 452 flow. Second operand has 8 states, 8 states have (on average 122.25) internal successors, (978), 8 states have internal predecessors, (978), 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 11:22:14,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:14,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 304 [2023-08-27 11:22:14,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:14,694 INFO L124 PetriNetUnfolderBase]: 588/1153 cut-off events. [2023-08-27 11:22:14,694 INFO L125 PetriNetUnfolderBase]: For 2560/2566 co-relation queries the response was YES. [2023-08-27 11:22:14,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4165 conditions, 1153 events. 588/1153 cut-off events. For 2560/2566 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6530 event pairs, 155 based on Foata normal form. 15/1154 useless extension candidates. Maximal degree in co-relation 4047. Up to 793 conditions per place. [2023-08-27 11:22:14,700 INFO L140 encePairwiseOnDemand]: 293/304 looper letters, 70 selfloop transitions, 16 changer transitions 15/107 dead transitions. [2023-08-27 11:22:14,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 107 transitions, 852 flow [2023-08-27 11:22:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 11:22:14,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 11:22:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1399 transitions. [2023-08-27 11:22:14,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836124401913877 [2023-08-27 11:22:14,702 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1399 transitions. [2023-08-27 11:22:14,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1399 transitions. [2023-08-27 11:22:14,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:14,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1399 transitions. [2023-08-27 11:22:14,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 127.18181818181819) internal successors, (1399), 11 states have internal predecessors, (1399), 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 11:22:14,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 304.0) internal successors, (3648), 12 states have internal predecessors, (3648), 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 11:22:14,708 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 304.0) internal successors, (3648), 12 states have internal predecessors, (3648), 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 11:22:14,708 INFO L175 Difference]: Start difference. First operand has 89 places, 66 transitions, 452 flow. Second operand 11 states and 1399 transitions. [2023-08-27 11:22:14,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 107 transitions, 852 flow [2023-08-27 11:22:14,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 107 transitions, 843 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 11:22:14,717 INFO L231 Difference]: Finished difference. Result has 97 places, 63 transitions, 452 flow [2023-08-27 11:22:14,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=452, PETRI_PLACES=97, PETRI_TRANSITIONS=63} [2023-08-27 11:22:14,718 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 39 predicate places. [2023-08-27 11:22:14,718 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 63 transitions, 452 flow [2023-08-27 11:22:14,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.25) internal successors, (978), 8 states have internal predecessors, (978), 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 11:22:14,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:14,718 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:14,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 11:22:14,718 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:14,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:14,719 INFO L85 PathProgramCache]: Analyzing trace with hash 88270438, now seen corresponding path program 1 times [2023-08-27 11:22:14,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:14,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345011414] [2023-08-27 11:22:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:14,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:14,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:22:14,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:14,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345011414] [2023-08-27 11:22:14,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345011414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:14,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:14,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:22:14,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330713621] [2023-08-27 11:22:14,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:14,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:22:14,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:14,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:22:14,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:22:14,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 304 [2023-08-27 11:22:14,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 63 transitions, 452 flow. Second operand has 7 states, 7 states have (on average 127.57142857142857) internal successors, (893), 7 states have internal predecessors, (893), 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 11:22:14,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:14,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 304 [2023-08-27 11:22:14,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:14,982 INFO L124 PetriNetUnfolderBase]: 507/994 cut-off events. [2023-08-27 11:22:14,982 INFO L125 PetriNetUnfolderBase]: For 2377/2377 co-relation queries the response was YES. [2023-08-27 11:22:14,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3626 conditions, 994 events. 507/994 cut-off events. For 2377/2377 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5422 event pairs, 134 based on Foata normal form. 9/989 useless extension candidates. Maximal degree in co-relation 3506. Up to 665 conditions per place. [2023-08-27 11:22:14,985 INFO L140 encePairwiseOnDemand]: 296/304 looper letters, 68 selfloop transitions, 9 changer transitions 11/94 dead transitions. [2023-08-27 11:22:14,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 775 flow [2023-08-27 11:22:14,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 11:22:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 11:22:14,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1065 transitions. [2023-08-27 11:22:14,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4379111842105263 [2023-08-27 11:22:14,987 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1065 transitions. [2023-08-27 11:22:14,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1065 transitions. [2023-08-27 11:22:14,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:14,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1065 transitions. [2023-08-27 11:22:14,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.125) internal successors, (1065), 8 states have internal predecessors, (1065), 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 11:22:14,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 304.0) internal successors, (2736), 9 states have internal predecessors, (2736), 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 11:22:14,992 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 304.0) internal successors, (2736), 9 states have internal predecessors, (2736), 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 11:22:14,992 INFO L175 Difference]: Start difference. First operand has 97 places, 63 transitions, 452 flow. Second operand 8 states and 1065 transitions. [2023-08-27 11:22:14,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 775 flow [2023-08-27 11:22:14,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 94 transitions, 720 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-27 11:22:14,998 INFO L231 Difference]: Finished difference. Result has 91 places, 59 transitions, 380 flow [2023-08-27 11:22:14,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=380, PETRI_PLACES=91, PETRI_TRANSITIONS=59} [2023-08-27 11:22:14,998 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 33 predicate places. [2023-08-27 11:22:14,999 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 59 transitions, 380 flow [2023-08-27 11:22:14,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.57142857142857) internal successors, (893), 7 states have internal predecessors, (893), 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 11:22:14,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:14,999 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:14,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 11:22:14,999 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:15,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:15,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1118092866, now seen corresponding path program 2 times [2023-08-27 11:22:15,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:15,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705881878] [2023-08-27 11:22:15,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:15,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:15,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:22:15,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:15,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705881878] [2023-08-27 11:22:15,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705881878] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:22:15,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240601150] [2023-08-27 11:22:15,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:22:15,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:22:15,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:22:15,080 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:22:15,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 11:22:15,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 11:22:15,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:22:15,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:22:15,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:22:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:22:15,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:22:15,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240601150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:15,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:22:15,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-27 11:22:15,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696761082] [2023-08-27 11:22:15,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:15,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:22:15,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:15,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:22:15,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-27 11:22:15,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 304 [2023-08-27 11:22:15,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 59 transitions, 380 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 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 11:22:15,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:15,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 304 [2023-08-27 11:22:15,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:15,389 INFO L124 PetriNetUnfolderBase]: 453/901 cut-off events. [2023-08-27 11:22:15,390 INFO L125 PetriNetUnfolderBase]: For 1826/1832 co-relation queries the response was YES. [2023-08-27 11:22:15,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 901 events. 453/901 cut-off events. For 1826/1832 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4781 event pairs, 137 based on Foata normal form. 15/911 useless extension candidates. Maximal degree in co-relation 3041. Up to 499 conditions per place. [2023-08-27 11:22:15,394 INFO L140 encePairwiseOnDemand]: 296/304 looper letters, 67 selfloop transitions, 15 changer transitions 5/93 dead transitions. [2023-08-27 11:22:15,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 93 transitions, 700 flow [2023-08-27 11:22:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 11:22:15,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 11:22:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1062 transitions. [2023-08-27 11:22:15,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43667763157894735 [2023-08-27 11:22:15,396 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1062 transitions. [2023-08-27 11:22:15,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1062 transitions. [2023-08-27 11:22:15,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:15,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1062 transitions. [2023-08-27 11:22:15,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.75) internal successors, (1062), 8 states have internal predecessors, (1062), 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 11:22:15,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 304.0) internal successors, (2736), 9 states have internal predecessors, (2736), 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 11:22:15,400 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 304.0) internal successors, (2736), 9 states have internal predecessors, (2736), 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 11:22:15,400 INFO L175 Difference]: Start difference. First operand has 91 places, 59 transitions, 380 flow. Second operand 8 states and 1062 transitions. [2023-08-27 11:22:15,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 93 transitions, 700 flow [2023-08-27 11:22:15,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 93 transitions, 674 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-27 11:22:15,405 INFO L231 Difference]: Finished difference. Result has 89 places, 58 transitions, 376 flow [2023-08-27 11:22:15,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=376, PETRI_PLACES=89, PETRI_TRANSITIONS=58} [2023-08-27 11:22:15,406 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2023-08-27 11:22:15,406 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 58 transitions, 376 flow [2023-08-27 11:22:15,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 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 11:22:15,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:15,406 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:15,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 11:22:15,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:22:15,616 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:15,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:15,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1118092865, now seen corresponding path program 1 times [2023-08-27 11:22:15,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:15,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698223961] [2023-08-27 11:22:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:15,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:22:15,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:15,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698223961] [2023-08-27 11:22:15,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698223961] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:22:15,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707297096] [2023-08-27 11:22:15,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:15,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:22:15,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:22:15,729 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:22:15,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 11:22:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:15,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 11:22:15,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:22:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:22:15,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:22:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:22:15,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707297096] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:22:15,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:22:15,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-08-27 11:22:15,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839635660] [2023-08-27 11:22:15,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:22:15,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 11:22:15,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:15,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 11:22:15,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-27 11:22:15,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 304 [2023-08-27 11:22:15,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 58 transitions, 376 flow. Second operand has 14 states, 14 states have (on average 123.35714285714286) internal successors, (1727), 14 states have internal predecessors, (1727), 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 11:22:15,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:15,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 304 [2023-08-27 11:22:15,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:16,250 INFO L124 PetriNetUnfolderBase]: 436/867 cut-off events. [2023-08-27 11:22:16,250 INFO L125 PetriNetUnfolderBase]: For 1573/1579 co-relation queries the response was YES. [2023-08-27 11:22:16,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3062 conditions, 867 events. 436/867 cut-off events. For 1573/1579 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4585 event pairs, 27 based on Foata normal form. 15/877 useless extension candidates. Maximal degree in co-relation 2942. Up to 214 conditions per place. [2023-08-27 11:22:16,253 INFO L140 encePairwiseOnDemand]: 292/304 looper letters, 73 selfloop transitions, 22 changer transitions 29/130 dead transitions. [2023-08-27 11:22:16,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 130 transitions, 950 flow [2023-08-27 11:22:16,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 11:22:16,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 11:22:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2142 transitions. [2023-08-27 11:22:16,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2023-08-27 11:22:16,256 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2142 transitions. [2023-08-27 11:22:16,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2142 transitions. [2023-08-27 11:22:16,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:16,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2142 transitions. [2023-08-27 11:22:16,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 126.0) internal successors, (2142), 17 states have internal predecessors, (2142), 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 11:22:16,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 304.0) internal successors, (5472), 18 states have internal predecessors, (5472), 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 11:22:16,264 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 304.0) internal successors, (5472), 18 states have internal predecessors, (5472), 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 11:22:16,264 INFO L175 Difference]: Start difference. First operand has 89 places, 58 transitions, 376 flow. Second operand 17 states and 2142 transitions. [2023-08-27 11:22:16,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 130 transitions, 950 flow [2023-08-27 11:22:16,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 130 transitions, 893 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-08-27 11:22:16,269 INFO L231 Difference]: Finished difference. Result has 92 places, 52 transitions, 324 flow [2023-08-27 11:22:16,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=324, PETRI_PLACES=92, PETRI_TRANSITIONS=52} [2023-08-27 11:22:16,270 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 34 predicate places. [2023-08-27 11:22:16,270 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 52 transitions, 324 flow [2023-08-27 11:22:16,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 123.35714285714286) internal successors, (1727), 14 states have internal predecessors, (1727), 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 11:22:16,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:16,270 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:16,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 11:22:16,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:22:16,476 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:16,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:16,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1665062952, now seen corresponding path program 3 times [2023-08-27 11:22:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:16,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818083697] [2023-08-27 11:22:16,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:16,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:22:16,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:16,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818083697] [2023-08-27 11:22:16,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818083697] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:16,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:16,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:22:16,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666455041] [2023-08-27 11:22:16,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:16,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:22:16,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:16,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:22:16,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:22:16,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 304 [2023-08-27 11:22:16,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 52 transitions, 324 flow. Second operand has 8 states, 8 states have (on average 122.25) internal successors, (978), 8 states have internal predecessors, (978), 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 11:22:16,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:16,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 304 [2023-08-27 11:22:16,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:16,731 INFO L124 PetriNetUnfolderBase]: 288/587 cut-off events. [2023-08-27 11:22:16,732 INFO L125 PetriNetUnfolderBase]: For 1036/1042 co-relation queries the response was YES. [2023-08-27 11:22:16,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 587 events. 288/587 cut-off events. For 1036/1042 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2773 event pairs, 50 based on Foata normal form. 9/588 useless extension candidates. Maximal degree in co-relation 2016. Up to 297 conditions per place. [2023-08-27 11:22:16,734 INFO L140 encePairwiseOnDemand]: 294/304 looper letters, 57 selfloop transitions, 8 changer transitions 12/83 dead transitions. [2023-08-27 11:22:16,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 83 transitions, 620 flow [2023-08-27 11:22:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:22:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:22:16,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1140 transitions. [2023-08-27 11:22:16,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-27 11:22:16,736 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1140 transitions. [2023-08-27 11:22:16,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1140 transitions. [2023-08-27 11:22:16,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:16,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1140 transitions. [2023-08-27 11:22:16,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.66666666666667) internal successors, (1140), 9 states have internal predecessors, (1140), 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 11:22:16,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 304.0) internal successors, (3040), 10 states have internal predecessors, (3040), 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 11:22:16,740 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 304.0) internal successors, (3040), 10 states have internal predecessors, (3040), 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 11:22:16,740 INFO L175 Difference]: Start difference. First operand has 92 places, 52 transitions, 324 flow. Second operand 9 states and 1140 transitions. [2023-08-27 11:22:16,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 83 transitions, 620 flow [2023-08-27 11:22:16,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 83 transitions, 529 flow, removed 0 selfloop flow, removed 21 redundant places. [2023-08-27 11:22:16,743 INFO L231 Difference]: Finished difference. Result has 72 places, 45 transitions, 217 flow [2023-08-27 11:22:16,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=217, PETRI_PLACES=72, PETRI_TRANSITIONS=45} [2023-08-27 11:22:16,744 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2023-08-27 11:22:16,744 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 45 transitions, 217 flow [2023-08-27 11:22:16,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.25) internal successors, (978), 8 states have internal predecessors, (978), 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 11:22:16,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:16,744 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:16,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 11:22:16,745 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:16,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:16,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1666872678, now seen corresponding path program 2 times [2023-08-27 11:22:16,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:16,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799579734] [2023-08-27 11:22:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:16,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:22:16,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:16,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799579734] [2023-08-27 11:22:16,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799579734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:16,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:16,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:22:16,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068676513] [2023-08-27 11:22:16,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:16,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:22:16,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:16,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:22:16,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:22:16,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 304 [2023-08-27 11:22:16,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 45 transitions, 217 flow. Second operand has 8 states, 8 states have (on average 122.25) internal successors, (978), 8 states have internal predecessors, (978), 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 11:22:16,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:16,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 304 [2023-08-27 11:22:16,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:16,998 INFO L124 PetriNetUnfolderBase]: 255/536 cut-off events. [2023-08-27 11:22:16,998 INFO L125 PetriNetUnfolderBase]: For 526/532 co-relation queries the response was YES. [2023-08-27 11:22:16,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1676 conditions, 536 events. 255/536 cut-off events. For 526/532 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2471 event pairs, 71 based on Foata normal form. 9/537 useless extension candidates. Maximal degree in co-relation 1602. Up to 291 conditions per place. [2023-08-27 11:22:16,999 INFO L140 encePairwiseOnDemand]: 295/304 looper letters, 33 selfloop transitions, 2 changer transitions 35/76 dead transitions. [2023-08-27 11:22:16,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 76 transitions, 503 flow [2023-08-27 11:22:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:22:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:22:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1135 transitions. [2023-08-27 11:22:17,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41483918128654973 [2023-08-27 11:22:17,001 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1135 transitions. [2023-08-27 11:22:17,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1135 transitions. [2023-08-27 11:22:17,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:17,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1135 transitions. [2023-08-27 11:22:17,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.11111111111111) internal successors, (1135), 9 states have internal predecessors, (1135), 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 11:22:17,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 304.0) internal successors, (3040), 10 states have internal predecessors, (3040), 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 11:22:17,005 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 304.0) internal successors, (3040), 10 states have internal predecessors, (3040), 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 11:22:17,005 INFO L175 Difference]: Start difference. First operand has 72 places, 45 transitions, 217 flow. Second operand 9 states and 1135 transitions. [2023-08-27 11:22:17,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 76 transitions, 503 flow [2023-08-27 11:22:17,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 76 transitions, 487 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-27 11:22:17,008 INFO L231 Difference]: Finished difference. Result has 69 places, 39 transitions, 186 flow [2023-08-27 11:22:17,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=186, PETRI_PLACES=69, PETRI_TRANSITIONS=39} [2023-08-27 11:22:17,008 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2023-08-27 11:22:17,008 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 39 transitions, 186 flow [2023-08-27 11:22:17,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.25) internal successors, (978), 8 states have internal predecessors, (978), 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 11:22:17,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:17,009 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:17,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 11:22:17,009 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:22:17,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:17,009 INFO L85 PathProgramCache]: Analyzing trace with hash -750044290, now seen corresponding path program 3 times [2023-08-27 11:22:17,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:17,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449141970] [2023-08-27 11:22:17,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:17,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:22:17,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:17,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449141970] [2023-08-27 11:22:17,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449141970] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:17,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:17,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:22:17,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378301735] [2023-08-27 11:22:17,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:17,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:22:17,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:17,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:22:17,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:22:17,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 304 [2023-08-27 11:22:17,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 39 transitions, 186 flow. Second operand has 8 states, 8 states have (on average 122.25) internal successors, (978), 8 states have internal predecessors, (978), 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 11:22:17,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:17,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 304 [2023-08-27 11:22:17,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:17,240 INFO L124 PetriNetUnfolderBase]: 175/369 cut-off events. [2023-08-27 11:22:17,240 INFO L125 PetriNetUnfolderBase]: For 407/407 co-relation queries the response was YES. [2023-08-27 11:22:17,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 369 events. 175/369 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1516 event pairs, 15 based on Foata normal form. 18/383 useless extension candidates. Maximal degree in co-relation 1151. Up to 97 conditions per place. [2023-08-27 11:22:17,241 INFO L140 encePairwiseOnDemand]: 295/304 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2023-08-27 11:22:17,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 444 flow [2023-08-27 11:22:17,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:22:17,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:22:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1253 transitions. [2023-08-27 11:22:17,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41217105263157894 [2023-08-27 11:22:17,243 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1253 transitions. [2023-08-27 11:22:17,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1253 transitions. [2023-08-27 11:22:17,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:17,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1253 transitions. [2023-08-27 11:22:17,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.3) internal successors, (1253), 10 states have internal predecessors, (1253), 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 11:22:17,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 304.0) internal successors, (3344), 11 states have internal predecessors, (3344), 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 11:22:17,248 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 304.0) internal successors, (3344), 11 states have internal predecessors, (3344), 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 11:22:17,248 INFO L175 Difference]: Start difference. First operand has 69 places, 39 transitions, 186 flow. Second operand 10 states and 1253 transitions. [2023-08-27 11:22:17,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 444 flow [2023-08-27 11:22:17,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 431 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-27 11:22:17,250 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2023-08-27 11:22:17,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2023-08-27 11:22:17,254 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-08-27 11:22:17,254 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2023-08-27 11:22:17,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.25) internal successors, (978), 8 states have internal predecessors, (978), 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 11:22:17,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-08-27 11:22:17,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-27 11:22:17,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (14 of 17 remaining) [2023-08-27 11:22:17,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-27 11:22:17,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-27 11:22:17,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-27 11:22:17,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-27 11:22:17,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-27 11:22:17,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-27 11:22:17,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-27 11:22:17,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-27 11:22:17,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-27 11:22:17,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-27 11:22:17,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-27 11:22:17,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-27 11:22:17,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-27 11:22:17,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-27 11:22:17,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 11:22:17,256 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:17,257 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 (1/2) [2023-08-27 11:22:17,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 168 transitions, 354 flow [2023-08-27 11:22:17,282 INFO L124 PetriNetUnfolderBase]: 34/283 cut-off events. [2023-08-27 11:22:17,282 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:22:17,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 283 events. 34/283 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 839 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2023-08-27 11:22:17,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 168 transitions, 354 flow [2023-08-27 11:22:17,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 168 transitions, 354 flow [2023-08-27 11:22:17,285 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:22:17,285 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 168 transitions, 354 flow [2023-08-27 11:22:17,285 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 168 transitions, 354 flow [2023-08-27 11:22:17,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 168 transitions, 354 flow [2023-08-27 11:22:17,304 INFO L124 PetriNetUnfolderBase]: 34/283 cut-off events. [2023-08-27 11:22:17,305 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:22:17,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 283 events. 34/283 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 839 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2023-08-27 11:22:17,311 INFO L119 LiptonReduction]: Number of co-enabled transitions 11016 [2023-08-27 11:22:19,870 INFO L134 LiptonReduction]: Checked pairs total: 26657 [2023-08-27 11:22:19,870 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-27 11:22:19,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:22:19,871 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;@28acf179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:22:19,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:22:19,876 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:22:19,876 INFO L124 PetriNetUnfolderBase]: 16/73 cut-off events. [2023-08-27 11:22:19,877 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 11:22:19,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:19,877 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 11:22:19,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:22:19,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:19,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1288303579, now seen corresponding path program 1 times [2023-08-27 11:22:19,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:19,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770354433] [2023-08-27 11:22:19,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:19,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:22:19,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:22:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:22:19,908 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:22:19,908 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:22:19,908 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:22:19,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 11:22:19,909 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:22:19,909 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:22:19,909 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:22:19,909 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 11:22:19,936 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 11:22:19,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 206 transitions, 442 flow [2023-08-27 11:22:19,982 INFO L124 PetriNetUnfolderBase]: 54/438 cut-off events. [2023-08-27 11:22:19,982 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:22:19,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 438 events. 54/438 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1456 event pairs, 1 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 291. Up to 16 conditions per place. [2023-08-27 11:22:19,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 206 transitions, 442 flow [2023-08-27 11:22:19,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 206 transitions, 442 flow [2023-08-27 11:22:19,990 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:22:19,990 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 206 transitions, 442 flow [2023-08-27 11:22:19,990 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 206 transitions, 442 flow [2023-08-27 11:22:19,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 206 transitions, 442 flow [2023-08-27 11:22:20,038 INFO L124 PetriNetUnfolderBase]: 54/438 cut-off events. [2023-08-27 11:22:20,038 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:22:20,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 438 events. 54/438 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1456 event pairs, 1 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 291. Up to 16 conditions per place. [2023-08-27 11:22:20,053 INFO L119 LiptonReduction]: Number of co-enabled transitions 20736 [2023-08-27 11:22:22,809 INFO L134 LiptonReduction]: Checked pairs total: 59482 [2023-08-27 11:22:22,809 INFO L136 LiptonReduction]: Total number of compositions: 161 [2023-08-27 11:22:22,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:22:22,811 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;@28acf179, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:22:22,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-27 11:22:22,813 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:22:22,813 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-08-27 11:22:22,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:22:22,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:22,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:22:22,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:22:22,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:22,813 INFO L85 PathProgramCache]: Analyzing trace with hash 45969279, now seen corresponding path program 1 times [2023-08-27 11:22:22,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:22,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165690148] [2023-08-27 11:22:22,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:22,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:22,863 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 11:22:22,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:22,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165690148] [2023-08-27 11:22:22,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165690148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:22,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:22,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:22:22,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818731041] [2023-08-27 11:22:22,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:22,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:22:22,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:22,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:22:22,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:22:22,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 367 [2023-08-27 11:22:22,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 92 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 11:22:22,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:22,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 367 [2023-08-27 11:22:22,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:30,994 INFO L124 PetriNetUnfolderBase]: 107413/153905 cut-off events. [2023-08-27 11:22:30,994 INFO L125 PetriNetUnfolderBase]: For 2441/2441 co-relation queries the response was YES. [2023-08-27 11:22:31,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304484 conditions, 153905 events. 107413/153905 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 4071. Compared 1165201 event pairs, 69876 based on Foata normal form. 16992/117324 useless extension candidates. Maximal degree in co-relation 26680. Up to 148930 conditions per place. [2023-08-27 11:22:31,603 INFO L140 encePairwiseOnDemand]: 341/367 looper letters, 74 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-27 11:22:31,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 86 transitions, 354 flow [2023-08-27 11:22:31,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:22:31,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:22:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-27 11:22:31,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5513169845594914 [2023-08-27 11:22:31,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-27 11:22:31,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-27 11:22:31,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:31,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-27 11:22:31,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:22:31,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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 11:22:31,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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 11:22:31,607 INFO L175 Difference]: Start difference. First operand has 75 places, 92 transitions, 214 flow. Second operand 3 states and 607 transitions. [2023-08-27 11:22:31,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 86 transitions, 354 flow [2023-08-27 11:22:31,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:22:31,611 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 188 flow [2023-08-27 11:22:31,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2023-08-27 11:22:31,611 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2023-08-27 11:22:31,612 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 188 flow [2023-08-27 11:22:31,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 11:22:31,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:31,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:22:31,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 11:22:31,612 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:22:31,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:31,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1438104877, now seen corresponding path program 1 times [2023-08-27 11:22:31,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:31,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864801950] [2023-08-27 11:22:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:31,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:31,643 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 11:22:31,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:31,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864801950] [2023-08-27 11:22:31,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864801950] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:31,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:31,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:22:31,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749687200] [2023-08-27 11:22:31,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:31,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:22:31,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:31,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:22:31,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:22:31,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 367 [2023-08-27 11:22:31,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 11:22:31,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:31,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 367 [2023-08-27 11:22:31,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:41,661 INFO L124 PetriNetUnfolderBase]: 132217/197383 cut-off events. [2023-08-27 11:22:41,661 INFO L125 PetriNetUnfolderBase]: For 9410/9410 co-relation queries the response was YES. [2023-08-27 11:22:42,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400887 conditions, 197383 events. 132217/197383 cut-off events. For 9410/9410 co-relation queries the response was YES. Maximal size of possible extension queue 5540. Compared 1664463 event pairs, 61854 based on Foata normal form. 0/143790 useless extension candidates. Maximal degree in co-relation 400793. Up to 150589 conditions per place. [2023-08-27 11:22:42,824 INFO L140 encePairwiseOnDemand]: 345/367 looper letters, 102 selfloop transitions, 8 changer transitions 0/119 dead transitions. [2023-08-27 11:22:42,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 119 transitions, 534 flow [2023-08-27 11:22:42,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:22:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:22:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-08-27 11:22:42,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5495004541326067 [2023-08-27 11:22:42,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-08-27 11:22:42,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-08-27 11:22:42,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:42,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-08-27 11:22:42,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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 11:22:42,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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 11:22:42,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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 11:22:42,828 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 188 flow. Second operand 3 states and 605 transitions. [2023-08-27 11:22:42,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 119 transitions, 534 flow [2023-08-27 11:22:42,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 119 transitions, 531 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:22:42,846 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 274 flow [2023-08-27 11:22:42,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2023-08-27 11:22:42,847 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2023-08-27 11:22:42,847 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 274 flow [2023-08-27 11:22:42,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 11:22:42,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:42,847 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:22:42,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 11:22:42,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:22:42,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1716325298, now seen corresponding path program 1 times [2023-08-27 11:22:42,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:42,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543951225] [2023-08-27 11:22:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:42,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:42,885 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 11:22:42,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:42,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543951225] [2023-08-27 11:22:42,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543951225] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:42,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:42,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:22:42,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108578842] [2023-08-27 11:22:42,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:42,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:22:42,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:42,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:22:42,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:22:42,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 367 [2023-08-27 11:22:42,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 11:22:42,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:42,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 367 [2023-08-27 11:22:42,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:53,004 INFO L124 PetriNetUnfolderBase]: 121959/182570 cut-off events. [2023-08-27 11:22:53,004 INFO L125 PetriNetUnfolderBase]: For 38018/38018 co-relation queries the response was YES. [2023-08-27 11:22:53,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434580 conditions, 182570 events. 121959/182570 cut-off events. For 38018/38018 co-relation queries the response was YES. Maximal size of possible extension queue 5282. Compared 1565728 event pairs, 54760 based on Foata normal form. 0/152218 useless extension candidates. Maximal degree in co-relation 129930. Up to 133973 conditions per place. [2023-08-27 11:22:53,856 INFO L140 encePairwiseOnDemand]: 364/367 looper letters, 106 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-08-27 11:22:53,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 119 transitions, 610 flow [2023-08-27 11:22:53,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:22:53,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:22:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions. [2023-08-27 11:22:53,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458673932788374 [2023-08-27 11:22:53,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 601 transitions. [2023-08-27 11:22:53,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 601 transitions. [2023-08-27 11:22:53,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:53,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 601 transitions. [2023-08-27 11:22:53,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 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 11:22:53,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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 11:22:53,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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 11:22:53,858 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 274 flow. Second operand 3 states and 601 transitions. [2023-08-27 11:22:53,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 119 transitions, 610 flow [2023-08-27 11:22:56,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 119 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:22:56,231 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 258 flow [2023-08-27 11:22:56,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2023-08-27 11:22:56,231 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-08-27 11:22:56,231 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 258 flow [2023-08-27 11:22:56,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 11:22:56,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:22:56,232 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:22:56,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-27 11:22:56,232 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:22:56,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:22:56,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1716325338, now seen corresponding path program 1 times [2023-08-27 11:22:56,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:22:56,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309148761] [2023-08-27 11:22:56,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:22:56,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:22:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:22:56,251 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 11:22:56,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:22:56,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309148761] [2023-08-27 11:22:56,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309148761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:22:56,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:22:56,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:22:56,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194138298] [2023-08-27 11:22:56,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:22:56,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:22:56,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:22:56,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:22:56,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:22:56,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 367 [2023-08-27 11:22:56,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 11:22:56,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:22:56,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 367 [2023-08-27 11:22:56,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:23:04,928 INFO L124 PetriNetUnfolderBase]: 113897/170936 cut-off events. [2023-08-27 11:23:04,928 INFO L125 PetriNetUnfolderBase]: For 24269/24269 co-relation queries the response was YES. [2023-08-27 11:23:05,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400317 conditions, 170936 events. 113897/170936 cut-off events. For 24269/24269 co-relation queries the response was YES. Maximal size of possible extension queue 4922. Compared 1454459 event pairs, 39077 based on Foata normal form. 0/141823 useless extension candidates. Maximal degree in co-relation 115159. Up to 144838 conditions per place. [2023-08-27 11:23:05,987 INFO L140 encePairwiseOnDemand]: 363/367 looper letters, 104 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2023-08-27 11:23:05,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 119 transitions, 592 flow [2023-08-27 11:23:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:23:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:23:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions. [2023-08-27 11:23:05,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458673932788374 [2023-08-27 11:23:05,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 601 transitions. [2023-08-27 11:23:05,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 601 transitions. [2023-08-27 11:23:05,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:23:05,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 601 transitions. [2023-08-27 11:23:05,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 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 11:23:05,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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 11:23:05,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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 11:23:05,992 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 258 flow. Second operand 3 states and 601 transitions. [2023-08-27 11:23:05,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 119 transitions, 592 flow [2023-08-27 11:23:07,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 119 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:23:07,351 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 266 flow [2023-08-27 11:23:07,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2023-08-27 11:23:07,352 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-08-27 11:23:07,352 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 266 flow [2023-08-27 11:23:07,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 11:23:07,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:23:07,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:23:07,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 11:23:07,352 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:23:07,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:23:07,353 INFO L85 PathProgramCache]: Analyzing trace with hash -115200844, now seen corresponding path program 1 times [2023-08-27 11:23:07,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:23:07,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9981156] [2023-08-27 11:23:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:23:07,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:23:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:23:07,391 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 11:23:07,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:23:07,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9981156] [2023-08-27 11:23:07,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9981156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:23:07,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:23:07,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:23:07,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615701657] [2023-08-27 11:23:07,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:23:07,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:23:07,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:23:07,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:23:07,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:23:07,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 367 [2023-08-27 11:23:07,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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 11:23:07,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:23:07,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 367 [2023-08-27 11:23:07,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:23:19,906 INFO L124 PetriNetUnfolderBase]: 156871/235349 cut-off events. [2023-08-27 11:23:19,906 INFO L125 PetriNetUnfolderBase]: For 65394/66065 co-relation queries the response was YES. [2023-08-27 11:23:20,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564163 conditions, 235349 events. 156871/235349 cut-off events. For 65394/66065 co-relation queries the response was YES. Maximal size of possible extension queue 7247. Compared 2061065 event pairs, 35827 based on Foata normal form. 128/201384 useless extension candidates. Maximal degree in co-relation 422525. Up to 109329 conditions per place. [2023-08-27 11:23:21,338 INFO L140 encePairwiseOnDemand]: 345/367 looper letters, 241 selfloop transitions, 41 changer transitions 0/291 dead transitions. [2023-08-27 11:23:21,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 291 transitions, 1515 flow [2023-08-27 11:23:21,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:23:21,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:23:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1378 transitions. [2023-08-27 11:23:21,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363954846243675 [2023-08-27 11:23:21,340 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1378 transitions. [2023-08-27 11:23:21,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1378 transitions. [2023-08-27 11:23:21,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:23:21,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1378 transitions. [2023-08-27 11:23:21,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 196.85714285714286) internal successors, (1378), 7 states have internal predecessors, (1378), 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 11:23:21,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 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 11:23:21,345 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 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 11:23:21,345 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 266 flow. Second operand 7 states and 1378 transitions. [2023-08-27 11:23:21,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 291 transitions, 1515 flow [2023-08-27 11:23:21,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 291 transitions, 1497 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:23:21,378 INFO L231 Difference]: Finished difference. Result has 91 places, 111 transitions, 620 flow [2023-08-27 11:23:21,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=620, PETRI_PLACES=91, PETRI_TRANSITIONS=111} [2023-08-27 11:23:21,378 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 16 predicate places. [2023-08-27 11:23:21,379 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 111 transitions, 620 flow [2023-08-27 11:23:21,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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 11:23:21,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:23:21,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:23:21,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-27 11:23:21,379 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:23:21,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:23:21,380 INFO L85 PathProgramCache]: Analyzing trace with hash -115200866, now seen corresponding path program 1 times [2023-08-27 11:23:21,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:23:21,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725108214] [2023-08-27 11:23:21,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:23:21,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:23:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:23:21,418 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 11:23:21,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:23:21,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725108214] [2023-08-27 11:23:21,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725108214] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:23:21,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:23:21,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:23:21,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002835311] [2023-08-27 11:23:21,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:23:21,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:23:21,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:23:21,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:23:21,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:23:21,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 367 [2023-08-27 11:23:21,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 111 transitions, 620 flow. Second operand has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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 11:23:21,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:23:21,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 367 [2023-08-27 11:23:21,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:23:37,658 INFO L124 PetriNetUnfolderBase]: 157753/240553 cut-off events. [2023-08-27 11:23:37,658 INFO L125 PetriNetUnfolderBase]: For 308075/310875 co-relation queries the response was YES. [2023-08-27 11:23:38,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711940 conditions, 240553 events. 157753/240553 cut-off events. For 308075/310875 co-relation queries the response was YES. Maximal size of possible extension queue 7695. Compared 2176532 event pairs, 33292 based on Foata normal form. 10082/232600 useless extension candidates. Maximal degree in co-relation 549883. Up to 123905 conditions per place. [2023-08-27 11:23:39,474 INFO L140 encePairwiseOnDemand]: 345/367 looper letters, 261 selfloop transitions, 53 changer transitions 0/323 dead transitions. [2023-08-27 11:23:39,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 323 transitions, 2107 flow [2023-08-27 11:23:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:23:39,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:23:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1378 transitions. [2023-08-27 11:23:39,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363954846243675 [2023-08-27 11:23:39,476 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1378 transitions. [2023-08-27 11:23:39,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1378 transitions. [2023-08-27 11:23:39,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:23:39,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1378 transitions. [2023-08-27 11:23:39,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 196.85714285714286) internal successors, (1378), 7 states have internal predecessors, (1378), 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 11:23:39,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 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 11:23:39,480 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 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 11:23:39,480 INFO L175 Difference]: Start difference. First operand has 91 places, 111 transitions, 620 flow. Second operand 7 states and 1378 transitions. [2023-08-27 11:23:39,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 323 transitions, 2107 flow [2023-08-27 11:23:41,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 323 transitions, 2107 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:23:41,206 INFO L231 Difference]: Finished difference. Result has 101 places, 144 transitions, 1164 flow [2023-08-27 11:23:41,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1164, PETRI_PLACES=101, PETRI_TRANSITIONS=144} [2023-08-27 11:23:41,207 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 26 predicate places. [2023-08-27 11:23:41,207 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 144 transitions, 1164 flow [2023-08-27 11:23:41,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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 11:23:41,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:23:41,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:23:41,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-27 11:23:41,207 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:23:41,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:23:41,208 INFO L85 PathProgramCache]: Analyzing trace with hash -110335179, now seen corresponding path program 1 times [2023-08-27 11:23:41,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:23:41,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763308790] [2023-08-27 11:23:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:23:41,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:23:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:23:41,236 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 11:23:41,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:23:41,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763308790] [2023-08-27 11:23:41,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763308790] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:23:41,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455389192] [2023-08-27 11:23:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:23:41,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:23:41,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:23:41,240 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:23:41,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 11:23:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:23:41,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:23:41,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:23:41,345 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 11:23:41,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:23:41,361 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 11:23:41,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455389192] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:23:41,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:23:41,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:23:41,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072578132] [2023-08-27 11:23:41,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:23:41,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:23:41,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:23:41,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:23:41,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:23:41,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 367 [2023-08-27 11:23:41,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 144 transitions, 1164 flow. Second operand has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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 11:23:41,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:23:41,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 367 [2023-08-27 11:23:41,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:23:45,126 INFO L124 PetriNetUnfolderBase]: 29609/49150 cut-off events. [2023-08-27 11:23:45,126 INFO L125 PetriNetUnfolderBase]: For 191672/195965 co-relation queries the response was YES. [2023-08-27 11:23:45,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185634 conditions, 49150 events. 29609/49150 cut-off events. For 191672/195965 co-relation queries the response was YES. Maximal size of possible extension queue 2223. Compared 435821 event pairs, 958 based on Foata normal form. 6732/55565 useless extension candidates. Maximal degree in co-relation 143277. Up to 30976 conditions per place. [2023-08-27 11:23:45,427 INFO L140 encePairwiseOnDemand]: 364/367 looper letters, 256 selfloop transitions, 4 changer transitions 0/274 dead transitions. [2023-08-27 11:23:45,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 274 transitions, 2821 flow [2023-08-27 11:23:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:23:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:23:45,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1129 transitions. [2023-08-27 11:23:45,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127157129881925 [2023-08-27 11:23:45,438 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1129 transitions. [2023-08-27 11:23:45,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1129 transitions. [2023-08-27 11:23:45,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:23:45,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1129 transitions. [2023-08-27 11:23:45,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 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 11:23:45,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 367.0) internal successors, (2569), 7 states have internal predecessors, (2569), 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 11:23:45,440 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 367.0) internal successors, (2569), 7 states have internal predecessors, (2569), 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 11:23:45,440 INFO L175 Difference]: Start difference. First operand has 101 places, 144 transitions, 1164 flow. Second operand 6 states and 1129 transitions. [2023-08-27 11:23:45,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 274 transitions, 2821 flow [2023-08-27 11:23:45,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 274 transitions, 2767 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-27 11:23:45,549 INFO L231 Difference]: Finished difference. Result has 89 places, 118 transitions, 985 flow [2023-08-27 11:23:45,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=985, PETRI_PLACES=89, PETRI_TRANSITIONS=118} [2023-08-27 11:23:45,550 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 14 predicate places. [2023-08-27 11:23:45,550 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 118 transitions, 985 flow [2023-08-27 11:23:45,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 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 11:23:45,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:23:45,550 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:23:45,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-27 11:23:45,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-27 11:23:45,755 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:23:45,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:23:45,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1111438228, now seen corresponding path program 1 times [2023-08-27 11:23:45,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:23:45,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293236252] [2023-08-27 11:23:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:23:45,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:23:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:23:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:23:45,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:23:45,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293236252] [2023-08-27 11:23:45,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293236252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:23:45,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:23:45,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:23:45,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146997384] [2023-08-27 11:23:45,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:23:45,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:23:45,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:23:45,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:23:45,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:23:45,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 367 [2023-08-27 11:23:45,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 118 transitions, 985 flow. Second operand has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 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 11:23:45,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:23:45,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 367 [2023-08-27 11:23:45,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:23:49,800 INFO L124 PetriNetUnfolderBase]: 37332/56012 cut-off events. [2023-08-27 11:23:49,800 INFO L125 PetriNetUnfolderBase]: For 191297/191297 co-relation queries the response was YES. [2023-08-27 11:23:50,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215727 conditions, 56012 events. 37332/56012 cut-off events. For 191297/191297 co-relation queries the response was YES. Maximal size of possible extension queue 2311. Compared 429818 event pairs, 7825 based on Foata normal form. 1095/57107 useless extension candidates. Maximal degree in co-relation 198582. Up to 35553 conditions per place. [2023-08-27 11:23:50,396 INFO L140 encePairwiseOnDemand]: 347/367 looper letters, 221 selfloop transitions, 59 changer transitions 0/287 dead transitions. [2023-08-27 11:23:50,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 287 transitions, 2701 flow [2023-08-27 11:23:50,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:23:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:23:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1271 transitions. [2023-08-27 11:23:50,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947450369793694 [2023-08-27 11:23:50,403 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1271 transitions. [2023-08-27 11:23:50,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1271 transitions. [2023-08-27 11:23:50,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:23:50,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1271 transitions. [2023-08-27 11:23:50,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 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 11:23:50,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 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 11:23:50,412 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 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 11:23:50,412 INFO L175 Difference]: Start difference. First operand has 89 places, 118 transitions, 985 flow. Second operand 7 states and 1271 transitions. [2023-08-27 11:23:50,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 287 transitions, 2701 flow [2023-08-27 11:23:50,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 287 transitions, 2670 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-27 11:23:50,808 INFO L231 Difference]: Finished difference. Result has 97 places, 160 transitions, 1737 flow [2023-08-27 11:23:50,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1737, PETRI_PLACES=97, PETRI_TRANSITIONS=160} [2023-08-27 11:23:50,809 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 22 predicate places. [2023-08-27 11:23:50,809 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 160 transitions, 1737 flow [2023-08-27 11:23:50,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 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 11:23:50,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:23:50,809 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:23:50,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-27 11:23:50,809 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:23:50,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:23:50,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1111438227, now seen corresponding path program 1 times [2023-08-27 11:23:50,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:23:50,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477472921] [2023-08-27 11:23:50,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:23:50,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:23:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:23:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:23:50,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:23:50,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477472921] [2023-08-27 11:23:50,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477472921] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:23:50,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:23:50,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:23:50,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621591776] [2023-08-27 11:23:50,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:23:50,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:23:50,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:23:50,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:23:50,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:23:50,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 367 [2023-08-27 11:23:50,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 160 transitions, 1737 flow. Second operand has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 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 11:23:50,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:23:50,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 367 [2023-08-27 11:23:50,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:23:55,455 INFO L124 PetriNetUnfolderBase]: 35040/52913 cut-off events. [2023-08-27 11:23:55,456 INFO L125 PetriNetUnfolderBase]: For 256664/256664 co-relation queries the response was YES. [2023-08-27 11:23:55,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220589 conditions, 52913 events. 35040/52913 cut-off events. For 256664/256664 co-relation queries the response was YES. Maximal size of possible extension queue 2220. Compared 408779 event pairs, 7816 based on Foata normal form. 1095/54008 useless extension candidates. Maximal degree in co-relation 203805. Up to 34274 conditions per place. [2023-08-27 11:23:55,836 INFO L140 encePairwiseOnDemand]: 347/367 looper letters, 207 selfloop transitions, 61 changer transitions 0/275 dead transitions. [2023-08-27 11:23:55,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 275 transitions, 2844 flow [2023-08-27 11:23:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:23:55,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:23:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1271 transitions. [2023-08-27 11:23:55,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947450369793694 [2023-08-27 11:23:55,837 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1271 transitions. [2023-08-27 11:23:55,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1271 transitions. [2023-08-27 11:23:55,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:23:55,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1271 transitions. [2023-08-27 11:23:55,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 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 11:23:55,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 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 11:23:55,842 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 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 11:23:55,842 INFO L175 Difference]: Start difference. First operand has 97 places, 160 transitions, 1737 flow. Second operand 7 states and 1271 transitions. [2023-08-27 11:23:55,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 275 transitions, 2844 flow [2023-08-27 11:23:56,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 275 transitions, 2811 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:23:56,437 INFO L231 Difference]: Finished difference. Result has 102 places, 164 transitions, 1840 flow [2023-08-27 11:23:56,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1840, PETRI_PLACES=102, PETRI_TRANSITIONS=164} [2023-08-27 11:23:56,437 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 27 predicate places. [2023-08-27 11:23:56,438 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 164 transitions, 1840 flow [2023-08-27 11:23:56,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 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 11:23:56,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:23:56,438 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:23:56,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-27 11:23:56,438 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:23:56,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:23:56,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1517351025, now seen corresponding path program 1 times [2023-08-27 11:23:56,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:23:56,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046202682] [2023-08-27 11:23:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:23:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:23:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:23:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:23:56,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:23:56,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046202682] [2023-08-27 11:23:56,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046202682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:23:56,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:23:56,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:23:56,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287549427] [2023-08-27 11:23:56,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:23:56,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:23:56,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:23:56,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:23:56,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:23:56,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 367 [2023-08-27 11:23:56,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 164 transitions, 1840 flow. Second operand has 5 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 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 11:23:56,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:23:56,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 367 [2023-08-27 11:23:56,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:24:01,752 INFO L124 PetriNetUnfolderBase]: 39106/58710 cut-off events. [2023-08-27 11:24:01,753 INFO L125 PetriNetUnfolderBase]: For 333475/333475 co-relation queries the response was YES. [2023-08-27 11:24:01,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251381 conditions, 58710 events. 39106/58710 cut-off events. For 333475/333475 co-relation queries the response was YES. Maximal size of possible extension queue 2484. Compared 453580 event pairs, 9808 based on Foata normal form. 1035/59745 useless extension candidates. Maximal degree in co-relation 233311. Up to 40934 conditions per place. [2023-08-27 11:24:02,399 INFO L140 encePairwiseOnDemand]: 348/367 looper letters, 243 selfloop transitions, 73 changer transitions 0/323 dead transitions. [2023-08-27 11:24:02,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 323 transitions, 3859 flow [2023-08-27 11:24:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:24:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:24:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1252 transitions. [2023-08-27 11:24:02,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4873491630984819 [2023-08-27 11:24:02,401 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1252 transitions. [2023-08-27 11:24:02,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1252 transitions. [2023-08-27 11:24:02,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:24:02,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1252 transitions. [2023-08-27 11:24:02,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.85714285714286) internal successors, (1252), 7 states have internal predecessors, (1252), 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 11:24:02,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 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 11:24:02,403 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 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 11:24:02,403 INFO L175 Difference]: Start difference. First operand has 102 places, 164 transitions, 1840 flow. Second operand 7 states and 1252 transitions. [2023-08-27 11:24:02,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 323 transitions, 3859 flow [2023-08-27 11:24:03,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 323 transitions, 3842 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:24:03,005 INFO L231 Difference]: Finished difference. Result has 110 places, 207 transitions, 2782 flow [2023-08-27 11:24:03,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=1829, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2782, PETRI_PLACES=110, PETRI_TRANSITIONS=207} [2023-08-27 11:24:03,006 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 35 predicate places. [2023-08-27 11:24:03,006 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 207 transitions, 2782 flow [2023-08-27 11:24:03,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 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 11:24:03,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:24:03,006 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:24:03,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-27 11:24:03,006 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:24:03,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:24:03,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1517351024, now seen corresponding path program 1 times [2023-08-27 11:24:03,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:24:03,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016801351] [2023-08-27 11:24:03,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:24:03,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:24:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:24:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:24:03,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:24:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016801351] [2023-08-27 11:24:03,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016801351] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:24:03,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:24:03,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:24:03,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470713127] [2023-08-27 11:24:03,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:24:03,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:24:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:24:03,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:24:03,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:24:03,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 367 [2023-08-27 11:24:03,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 207 transitions, 2782 flow. Second operand has 5 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 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 11:24:03,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:24:03,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 367 [2023-08-27 11:24:03,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:24:08,221 INFO L124 PetriNetUnfolderBase]: 36603/55244 cut-off events. [2023-08-27 11:24:08,222 INFO L125 PetriNetUnfolderBase]: For 395645/395645 co-relation queries the response was YES. [2023-08-27 11:24:08,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248102 conditions, 55244 events. 36603/55244 cut-off events. For 395645/395645 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 427147 event pairs, 9595 based on Foata normal form. 1035/56279 useless extension candidates. Maximal degree in co-relation 231031. Up to 39133 conditions per place. [2023-08-27 11:24:08,682 INFO L140 encePairwiseOnDemand]: 348/367 looper letters, 231 selfloop transitions, 73 changer transitions 0/311 dead transitions. [2023-08-27 11:24:08,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 311 transitions, 3996 flow [2023-08-27 11:24:08,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:24:08,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:24:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1252 transitions. [2023-08-27 11:24:08,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4873491630984819 [2023-08-27 11:24:08,684 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1252 transitions. [2023-08-27 11:24:08,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1252 transitions. [2023-08-27 11:24:08,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:24:08,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1252 transitions. [2023-08-27 11:24:08,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.85714285714286) internal successors, (1252), 7 states have internal predecessors, (1252), 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 11:24:08,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 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 11:24:08,687 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 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 11:24:08,688 INFO L175 Difference]: Start difference. First operand has 110 places, 207 transitions, 2782 flow. Second operand 7 states and 1252 transitions. [2023-08-27 11:24:08,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 311 transitions, 3996 flow [2023-08-27 11:24:10,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 311 transitions, 3951 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:24:10,187 INFO L231 Difference]: Finished difference. Result has 115 places, 203 transitions, 2807 flow [2023-08-27 11:24:10,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2537, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2807, PETRI_PLACES=115, PETRI_TRANSITIONS=203} [2023-08-27 11:24:10,187 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 40 predicate places. [2023-08-27 11:24:10,188 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 203 transitions, 2807 flow [2023-08-27 11:24:10,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 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 11:24:10,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:24:10,188 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:24:10,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-27 11:24:10,188 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:24:10,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:24:10,189 INFO L85 PathProgramCache]: Analyzing trace with hash -354527775, now seen corresponding path program 1 times [2023-08-27 11:24:10,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:24:10,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155913760] [2023-08-27 11:24:10,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:24:10,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:24:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:24:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:24:10,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:24:10,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155913760] [2023-08-27 11:24:10,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155913760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:24:10,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:24:10,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:24:10,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828359523] [2023-08-27 11:24:10,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:24:10,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:24:10,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:24:10,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:24:10,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:24:10,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 367 [2023-08-27 11:24:10,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 203 transitions, 2807 flow. Second operand has 7 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 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 11:24:10,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:24:10,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 367 [2023-08-27 11:24:10,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:24:16,490 INFO L124 PetriNetUnfolderBase]: 41859/63212 cut-off events. [2023-08-27 11:24:16,490 INFO L125 PetriNetUnfolderBase]: For 442690/442690 co-relation queries the response was YES. [2023-08-27 11:24:16,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288672 conditions, 63212 events. 41859/63212 cut-off events. For 442690/442690 co-relation queries the response was YES. Maximal size of possible extension queue 2715. Compared 499435 event pairs, 6454 based on Foata normal form. 540/63752 useless extension candidates. Maximal degree in co-relation 271339. Up to 33472 conditions per place. [2023-08-27 11:24:16,988 INFO L140 encePairwiseOnDemand]: 347/367 looper letters, 377 selfloop transitions, 118 changer transitions 0/502 dead transitions. [2023-08-27 11:24:16,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 502 transitions, 6273 flow [2023-08-27 11:24:16,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:24:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:24:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2111 transitions. [2023-08-27 11:24:16,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793369663941871 [2023-08-27 11:24:16,990 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2111 transitions. [2023-08-27 11:24:16,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2111 transitions. [2023-08-27 11:24:16,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:24:16,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2111 transitions. [2023-08-27 11:24:16,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 175.91666666666666) internal successors, (2111), 12 states have internal predecessors, (2111), 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 11:24:16,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 367.0) internal successors, (4771), 13 states have internal predecessors, (4771), 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 11:24:16,994 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 367.0) internal successors, (4771), 13 states have internal predecessors, (4771), 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 11:24:16,995 INFO L175 Difference]: Start difference. First operand has 115 places, 203 transitions, 2807 flow. Second operand 12 states and 2111 transitions. [2023-08-27 11:24:16,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 502 transitions, 6273 flow [2023-08-27 11:24:18,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 502 transitions, 6228 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-08-27 11:24:18,467 INFO L231 Difference]: Finished difference. Result has 127 places, 246 transitions, 3859 flow [2023-08-27 11:24:18,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3859, PETRI_PLACES=127, PETRI_TRANSITIONS=246} [2023-08-27 11:24:18,467 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 52 predicate places. [2023-08-27 11:24:18,467 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 246 transitions, 3859 flow [2023-08-27 11:24:18,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 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 11:24:18,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:24:18,468 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:24:18,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-27 11:24:18,468 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:24:18,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:24:18,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1774709330, now seen corresponding path program 1 times [2023-08-27 11:24:18,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:24:18,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304813806] [2023-08-27 11:24:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:24:18,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:24:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:24:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:24:18,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:24:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304813806] [2023-08-27 11:24:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304813806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:24:18,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:24:18,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:24:18,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443426611] [2023-08-27 11:24:18,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:24:18,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:24:18,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:24:18,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:24:18,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:24:18,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 367 [2023-08-27 11:24:18,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 246 transitions, 3859 flow. Second operand has 7 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 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 11:24:18,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:24:18,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 367 [2023-08-27 11:24:18,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:24:25,575 INFO L124 PetriNetUnfolderBase]: 42671/64993 cut-off events. [2023-08-27 11:24:25,575 INFO L125 PetriNetUnfolderBase]: For 545795/545795 co-relation queries the response was YES. [2023-08-27 11:24:25,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312839 conditions, 64993 events. 42671/64993 cut-off events. For 545795/545795 co-relation queries the response was YES. Maximal size of possible extension queue 2877. Compared 525086 event pairs, 5902 based on Foata normal form. 594/65587 useless extension candidates. Maximal degree in co-relation 295025. Up to 34748 conditions per place. [2023-08-27 11:24:26,109 INFO L140 encePairwiseOnDemand]: 347/367 looper letters, 373 selfloop transitions, 135 changer transitions 0/515 dead transitions. [2023-08-27 11:24:26,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 515 transitions, 7508 flow [2023-08-27 11:24:26,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:24:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:24:26,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1769 transitions. [2023-08-27 11:24:26,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.482016348773842 [2023-08-27 11:24:26,111 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1769 transitions. [2023-08-27 11:24:26,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1769 transitions. [2023-08-27 11:24:26,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:24:26,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1769 transitions. [2023-08-27 11:24:26,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 176.9) internal successors, (1769), 10 states have internal predecessors, (1769), 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 11:24:26,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 367.0) internal successors, (4037), 11 states have internal predecessors, (4037), 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 11:24:26,116 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 367.0) internal successors, (4037), 11 states have internal predecessors, (4037), 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 11:24:26,116 INFO L175 Difference]: Start difference. First operand has 127 places, 246 transitions, 3859 flow. Second operand 10 states and 1769 transitions. [2023-08-27 11:24:26,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 515 transitions, 7508 flow [2023-08-27 11:24:31,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 515 transitions, 7288 flow, removed 43 selfloop flow, removed 5 redundant places. [2023-08-27 11:24:31,662 INFO L231 Difference]: Finished difference. Result has 134 places, 288 transitions, 4882 flow [2023-08-27 11:24:31,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=3591, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4882, PETRI_PLACES=134, PETRI_TRANSITIONS=288} [2023-08-27 11:24:31,663 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 59 predicate places. [2023-08-27 11:24:31,663 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 288 transitions, 4882 flow [2023-08-27 11:24:31,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 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 11:24:31,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:24:31,663 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:24:31,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-27 11:24:31,663 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:24:31,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:24:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1693095884, now seen corresponding path program 1 times [2023-08-27 11:24:31,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:24:31,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421537144] [2023-08-27 11:24:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:24:31,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:24:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:24:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:24:31,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:24:31,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421537144] [2023-08-27 11:24:31,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421537144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:24:31,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:24:31,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:24:31,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445778728] [2023-08-27 11:24:31,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:24:31,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:24:31,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:24:31,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:24:31,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:24:31,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 367 [2023-08-27 11:24:31,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 288 transitions, 4882 flow. Second operand has 7 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 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 11:24:31,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:24:31,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 367 [2023-08-27 11:24:31,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:24:40,091 INFO L124 PetriNetUnfolderBase]: 47268/71732 cut-off events. [2023-08-27 11:24:40,091 INFO L125 PetriNetUnfolderBase]: For 737743/737743 co-relation queries the response was YES. [2023-08-27 11:24:40,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362794 conditions, 71732 events. 47268/71732 cut-off events. For 737743/737743 co-relation queries the response was YES. Maximal size of possible extension queue 3241. Compared 582203 event pairs, 9001 based on Foata normal form. 684/72416 useless extension candidates. Maximal degree in co-relation 344632. Up to 44405 conditions per place. [2023-08-27 11:24:40,812 INFO L140 encePairwiseOnDemand]: 346/367 looper letters, 451 selfloop transitions, 185 changer transitions 0/643 dead transitions. [2023-08-27 11:24:40,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 643 transitions, 9680 flow [2023-08-27 11:24:40,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:24:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:24:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2608 transitions. [2023-08-27 11:24:40,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4737511353315168 [2023-08-27 11:24:40,814 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2608 transitions. [2023-08-27 11:24:40,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2608 transitions. [2023-08-27 11:24:40,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:24:40,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2608 transitions. [2023-08-27 11:24:40,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 173.86666666666667) internal successors, (2608), 15 states have internal predecessors, (2608), 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 11:24:40,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 367.0) internal successors, (5872), 16 states have internal predecessors, (5872), 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 11:24:40,819 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 367.0) internal successors, (5872), 16 states have internal predecessors, (5872), 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 11:24:40,819 INFO L175 Difference]: Start difference. First operand has 134 places, 288 transitions, 4882 flow. Second operand 15 states and 2608 transitions. [2023-08-27 11:24:40,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 643 transitions, 9680 flow [2023-08-27 11:24:49,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 643 transitions, 9232 flow, removed 117 selfloop flow, removed 5 redundant places. [2023-08-27 11:24:49,986 INFO L231 Difference]: Finished difference. Result has 151 places, 379 transitions, 6999 flow [2023-08-27 11:24:49,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=4485, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6999, PETRI_PLACES=151, PETRI_TRANSITIONS=379} [2023-08-27 11:24:49,986 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 76 predicate places. [2023-08-27 11:24:49,986 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 379 transitions, 6999 flow [2023-08-27 11:24:49,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 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 11:24:49,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:24:49,987 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:24:49,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-27 11:24:49,987 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:24:49,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:24:49,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1774655976, now seen corresponding path program 1 times [2023-08-27 11:24:49,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:24:49,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913064241] [2023-08-27 11:24:49,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:24:49,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:24:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:24:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:24:50,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:24:50,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913064241] [2023-08-27 11:24:50,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913064241] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:24:50,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:24:50,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:24:50,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960117326] [2023-08-27 11:24:50,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:24:50,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:24:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:24:50,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:24:50,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:24:50,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 367 [2023-08-27 11:24:50,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 379 transitions, 6999 flow. Second operand has 7 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 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 11:24:50,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:24:50,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 367 [2023-08-27 11:24:50,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:24:59,823 INFO L124 PetriNetUnfolderBase]: 47155/72087 cut-off events. [2023-08-27 11:24:59,824 INFO L125 PetriNetUnfolderBase]: For 901125/901149 co-relation queries the response was YES. [2023-08-27 11:25:00,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383784 conditions, 72087 events. 47155/72087 cut-off events. For 901125/901149 co-relation queries the response was YES. Maximal size of possible extension queue 3349. Compared 594801 event pairs, 6823 based on Foata normal form. 774/72861 useless extension candidates. Maximal degree in co-relation 364698. Up to 36664 conditions per place. [2023-08-27 11:25:00,616 INFO L140 encePairwiseOnDemand]: 346/367 looper letters, 447 selfloop transitions, 282 changer transitions 1/737 dead transitions. [2023-08-27 11:25:00,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 737 transitions, 11776 flow [2023-08-27 11:25:00,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 11:25:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 11:25:00,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2941 transitions. [2023-08-27 11:25:00,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713896457765668 [2023-08-27 11:25:00,619 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2941 transitions. [2023-08-27 11:25:00,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2941 transitions. [2023-08-27 11:25:00,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:00,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2941 transitions. [2023-08-27 11:25:00,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 173.0) internal successors, (2941), 17 states have internal predecessors, (2941), 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 11:25:00,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 367.0) internal successors, (6606), 18 states have internal predecessors, (6606), 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 11:25:00,625 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 367.0) internal successors, (6606), 18 states have internal predecessors, (6606), 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 11:25:00,625 INFO L175 Difference]: Start difference. First operand has 151 places, 379 transitions, 6999 flow. Second operand 17 states and 2941 transitions. [2023-08-27 11:25:00,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 737 transitions, 11776 flow [2023-08-27 11:25:15,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 737 transitions, 11517 flow, removed 101 selfloop flow, removed 4 redundant places. [2023-08-27 11:25:15,889 INFO L231 Difference]: Finished difference. Result has 172 places, 471 transitions, 9446 flow [2023-08-27 11:25:15,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=6486, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9446, PETRI_PLACES=172, PETRI_TRANSITIONS=471} [2023-08-27 11:25:15,890 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 97 predicate places. [2023-08-27 11:25:15,890 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 471 transitions, 9446 flow [2023-08-27 11:25:15,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 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 11:25:15,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:25:15,890 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:25:15,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-27 11:25:15,890 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:25:15,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:25:15,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1209856851, now seen corresponding path program 1 times [2023-08-27 11:25:15,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:25:15,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148959496] [2023-08-27 11:25:15,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:25:15,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:25:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:25:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:25:15,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:25:15,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148959496] [2023-08-27 11:25:15,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148959496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:25:15,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:25:15,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:25:15,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573742160] [2023-08-27 11:25:15,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:25:15,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:25:15,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:25:15,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:25:15,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:25:15,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 367 [2023-08-27 11:25:15,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 471 transitions, 9446 flow. Second operand has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 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 11:25:15,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:25:15,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 367 [2023-08-27 11:25:15,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:29,679 INFO L124 PetriNetUnfolderBase]: 56306/85516 cut-off events. [2023-08-27 11:25:29,679 INFO L125 PetriNetUnfolderBase]: For 1323978/1324050 co-relation queries the response was YES. [2023-08-27 11:25:30,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489953 conditions, 85516 events. 56306/85516 cut-off events. For 1323978/1324050 co-relation queries the response was YES. Maximal size of possible extension queue 4012. Compared 710047 event pairs, 9940 based on Foata normal form. 612/86110 useless extension candidates. Maximal degree in co-relation 466209. Up to 48695 conditions per place. [2023-08-27 11:25:31,065 INFO L140 encePairwiseOnDemand]: 346/367 looper letters, 567 selfloop transitions, 241 changer transitions 0/815 dead transitions. [2023-08-27 11:25:31,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 815 transitions, 15395 flow [2023-08-27 11:25:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 11:25:31,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 11:25:31,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1953 transitions. [2023-08-27 11:25:31,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48377508050532575 [2023-08-27 11:25:31,075 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1953 transitions. [2023-08-27 11:25:31,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1953 transitions. [2023-08-27 11:25:31,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:31,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1953 transitions. [2023-08-27 11:25:31,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 177.54545454545453) internal successors, (1953), 11 states have internal predecessors, (1953), 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 11:25:31,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 367.0) internal successors, (4404), 12 states have internal predecessors, (4404), 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 11:25:31,080 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 367.0) internal successors, (4404), 12 states have internal predecessors, (4404), 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 11:25:31,080 INFO L175 Difference]: Start difference. First operand has 172 places, 471 transitions, 9446 flow. Second operand 11 states and 1953 transitions. [2023-08-27 11:25:31,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 815 transitions, 15395 flow [2023-08-27 11:26:01,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 815 transitions, 14251 flow, removed 371 selfloop flow, removed 7 redundant places. [2023-08-27 11:26:01,420 INFO L231 Difference]: Finished difference. Result has 179 places, 563 transitions, 11211 flow [2023-08-27 11:26:01,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=8450, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11211, PETRI_PLACES=179, PETRI_TRANSITIONS=563} [2023-08-27 11:26:01,421 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 104 predicate places. [2023-08-27 11:26:01,421 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 563 transitions, 11211 flow [2023-08-27 11:26:01,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 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 11:26:01,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:01,422 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:26:01,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-27 11:26:01,422 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:26:01,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:01,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1209856799, now seen corresponding path program 1 times [2023-08-27 11:26:01,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:01,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198353920] [2023-08-27 11:26:01,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:01,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:26:01,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:01,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198353920] [2023-08-27 11:26:01,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198353920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:01,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:01,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:26:01,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942745954] [2023-08-27 11:26:01,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:01,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:26:01,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:01,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:26:01,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:26:01,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 367 [2023-08-27 11:26:01,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 563 transitions, 11211 flow. Second operand has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 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 11:26:01,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:01,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 367 [2023-08-27 11:26:01,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:26:17,140 INFO L124 PetriNetUnfolderBase]: 57586/88284 cut-off events. [2023-08-27 11:26:17,140 INFO L125 PetriNetUnfolderBase]: For 1466426/1466462 co-relation queries the response was YES. [2023-08-27 11:26:17,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516303 conditions, 88284 events. 57586/88284 cut-off events. For 1466426/1466462 co-relation queries the response was YES. Maximal size of possible extension queue 4240. Compared 747766 event pairs, 10174 based on Foata normal form. 648/88914 useless extension candidates. Maximal degree in co-relation 491760. Up to 50541 conditions per place. [2023-08-27 11:26:18,260 INFO L140 encePairwiseOnDemand]: 346/367 looper letters, 658 selfloop transitions, 251 changer transitions 3/919 dead transitions. [2023-08-27 11:26:18,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 919 transitions, 17512 flow [2023-08-27 11:26:18,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:26:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:26:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2119 transitions. [2023-08-27 11:26:18,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4811534968210718 [2023-08-27 11:26:18,262 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2119 transitions. [2023-08-27 11:26:18,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2119 transitions. [2023-08-27 11:26:18,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:26:18,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2119 transitions. [2023-08-27 11:26:18,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 176.58333333333334) internal successors, (2119), 12 states have internal predecessors, (2119), 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 11:26:18,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 367.0) internal successors, (4771), 13 states have internal predecessors, (4771), 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 11:26:18,266 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 367.0) internal successors, (4771), 13 states have internal predecessors, (4771), 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 11:26:18,266 INFO L175 Difference]: Start difference. First operand has 179 places, 563 transitions, 11211 flow. Second operand 12 states and 2119 transitions. [2023-08-27 11:26:18,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 919 transitions, 17512 flow [2023-08-27 11:26:59,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 919 transitions, 16366 flow, removed 356 selfloop flow, removed 6 redundant places. [2023-08-27 11:26:59,931 INFO L231 Difference]: Finished difference. Result has 189 places, 640 transitions, 12945 flow [2023-08-27 11:26:59,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=10076, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12945, PETRI_PLACES=189, PETRI_TRANSITIONS=640} [2023-08-27 11:26:59,932 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 114 predicate places. [2023-08-27 11:26:59,932 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 640 transitions, 12945 flow [2023-08-27 11:26:59,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 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 11:26:59,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:26:59,932 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:26:59,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-27 11:26:59,933 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:26:59,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:26:59,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1243598330, now seen corresponding path program 1 times [2023-08-27 11:26:59,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:26:59,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018908243] [2023-08-27 11:26:59,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:26:59,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:26:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:26:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:26:59,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:26:59,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018908243] [2023-08-27 11:26:59,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018908243] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:26:59,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:26:59,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:26:59,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649880810] [2023-08-27 11:26:59,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:26:59,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:26:59,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:26:59,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:26:59,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:26:59,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 367 [2023-08-27 11:26:59,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 640 transitions, 12945 flow. Second operand has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 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 11:26:59,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:26:59,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 367 [2023-08-27 11:26:59,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:27:17,481 INFO L124 PetriNetUnfolderBase]: 61067/93019 cut-off events. [2023-08-27 11:27:17,482 INFO L125 PetriNetUnfolderBase]: For 1783177/1783177 co-relation queries the response was YES. [2023-08-27 11:27:18,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566548 conditions, 93019 events. 61067/93019 cut-off events. For 1783177/1783177 co-relation queries the response was YES. Maximal size of possible extension queue 4455. Compared 784416 event pairs, 12934 based on Foata normal form. 756/93751 useless extension candidates. Maximal degree in co-relation 541340. Up to 63442 conditions per place. [2023-08-27 11:27:18,735 INFO L140 encePairwiseOnDemand]: 346/367 looper letters, 716 selfloop transitions, 275 changer transitions 0/998 dead transitions. [2023-08-27 11:27:18,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 998 transitions, 19147 flow [2023-08-27 11:27:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:27:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:27:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2605 transitions. [2023-08-27 11:27:18,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732061762034514 [2023-08-27 11:27:18,738 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2605 transitions. [2023-08-27 11:27:18,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2605 transitions. [2023-08-27 11:27:18,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:27:18,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2605 transitions. [2023-08-27 11:27:18,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 173.66666666666666) internal successors, (2605), 15 states have internal predecessors, (2605), 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 11:27:18,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 367.0) internal successors, (5872), 16 states have internal predecessors, (5872), 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 11:27:18,744 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 367.0) internal successors, (5872), 16 states have internal predecessors, (5872), 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 11:27:18,744 INFO L175 Difference]: Start difference. First operand has 189 places, 640 transitions, 12945 flow. Second operand 15 states and 2605 transitions. [2023-08-27 11:27:18,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 998 transitions, 19147 flow [2023-08-27 11:28:07,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 998 transitions, 18870 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-08-27 11:28:07,771 INFO L231 Difference]: Finished difference. Result has 207 places, 721 transitions, 15735 flow [2023-08-27 11:28:07,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=12183, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=15735, PETRI_PLACES=207, PETRI_TRANSITIONS=721} [2023-08-27 11:28:07,771 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 132 predicate places. [2023-08-27 11:28:07,771 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 721 transitions, 15735 flow [2023-08-27 11:28:07,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 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 11:28:07,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:28:07,772 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:28:07,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-27 11:28:07,772 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:28:07,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:28:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1209838399, now seen corresponding path program 1 times [2023-08-27 11:28:07,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:28:07,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815954531] [2023-08-27 11:28:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:28:07,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:28:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:28:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:28:07,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:28:07,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815954531] [2023-08-27 11:28:07,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815954531] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:28:07,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:28:07,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:28:07,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877700006] [2023-08-27 11:28:07,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:28:07,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:28:07,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:28:07,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:28:07,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:28:07,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 367 [2023-08-27 11:28:07,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 721 transitions, 15735 flow. Second operand has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 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 11:28:07,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:28:07,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 367 [2023-08-27 11:28:07,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:28:27,847 INFO L124 PetriNetUnfolderBase]: 59869/91203 cut-off events. [2023-08-27 11:28:27,848 INFO L125 PetriNetUnfolderBase]: For 2001378/2001414 co-relation queries the response was YES. [2023-08-27 11:28:28,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581272 conditions, 91203 events. 59869/91203 cut-off events. For 2001378/2001414 co-relation queries the response was YES. Maximal size of possible extension queue 4367. Compared 768186 event pairs, 9796 based on Foata normal form. 867/92070 useless extension candidates. Maximal degree in co-relation 555084. Up to 52852 conditions per place. [2023-08-27 11:28:29,235 INFO L140 encePairwiseOnDemand]: 346/367 looper letters, 661 selfloop transitions, 397 changer transitions 1/1066 dead transitions. [2023-08-27 11:28:29,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 1066 transitions, 21603 flow [2023-08-27 11:28:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 11:28:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 11:28:29,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2940 transitions. [2023-08-27 11:28:29,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47122936368007695 [2023-08-27 11:28:29,238 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2940 transitions. [2023-08-27 11:28:29,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2940 transitions. [2023-08-27 11:28:29,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:28:29,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2940 transitions. [2023-08-27 11:28:29,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 172.94117647058823) internal successors, (2940), 17 states have internal predecessors, (2940), 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 11:28:29,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 367.0) internal successors, (6606), 18 states have internal predecessors, (6606), 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 11:28:29,244 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 367.0) internal successors, (6606), 18 states have internal predecessors, (6606), 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 11:28:29,245 INFO L175 Difference]: Start difference. First operand has 207 places, 721 transitions, 15735 flow. Second operand 17 states and 2940 transitions. [2023-08-27 11:28:29,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 1066 transitions, 21603 flow [2023-08-27 11:29:25,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1066 transitions, 21148 flow, removed 194 selfloop flow, removed 4 redundant places. [2023-08-27 11:29:25,432 INFO L231 Difference]: Finished difference. Result has 228 places, 778 transitions, 18141 flow [2023-08-27 11:29:25,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=14578, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=18141, PETRI_PLACES=228, PETRI_TRANSITIONS=778} [2023-08-27 11:29:25,433 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 153 predicate places. [2023-08-27 11:29:25,433 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 778 transitions, 18141 flow [2023-08-27 11:29:25,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 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 11:29:25,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:25,433 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:29:25,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-27 11:29:25,433 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:29:25,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:25,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1962792208, now seen corresponding path program 1 times [2023-08-27 11:29:25,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:25,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849569887] [2023-08-27 11:29:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:25,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:29:25,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:25,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849569887] [2023-08-27 11:29:25,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849569887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:29:25,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:29:25,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:29:25,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411100285] [2023-08-27 11:29:25,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:29:25,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:29:25,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:25,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:29:25,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:29:25,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 367 [2023-08-27 11:29:25,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 778 transitions, 18141 flow. Second operand has 7 states, 7 states have (on average 153.42857142857142) internal successors, (1074), 7 states have internal predecessors, (1074), 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 11:29:25,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:25,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 367 [2023-08-27 11:29:25,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:29:47,460 INFO L124 PetriNetUnfolderBase]: 63772/96537 cut-off events. [2023-08-27 11:29:47,460 INFO L125 PetriNetUnfolderBase]: For 2622559/2622667 co-relation queries the response was YES. [2023-08-27 11:29:48,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661195 conditions, 96537 events. 63772/96537 cut-off events. For 2622559/2622667 co-relation queries the response was YES. Maximal size of possible extension queue 4548. Compared 809863 event pairs, 10597 based on Foata normal form. 795/97332 useless extension candidates. Maximal degree in co-relation 643670. Up to 61304 conditions per place. [2023-08-27 11:29:49,070 INFO L140 encePairwiseOnDemand]: 347/367 looper letters, 749 selfloop transitions, 400 changer transitions 0/1156 dead transitions. [2023-08-27 11:29:49,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 1156 transitions, 25903 flow [2023-08-27 11:29:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:29:49,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:29:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2574 transitions. [2023-08-27 11:29:49,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.467574931880109 [2023-08-27 11:29:49,073 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2574 transitions. [2023-08-27 11:29:49,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2574 transitions. [2023-08-27 11:29:49,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:29:49,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2574 transitions. [2023-08-27 11:29:49,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 171.6) internal successors, (2574), 15 states have internal predecessors, (2574), 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 11:29:49,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 367.0) internal successors, (5872), 16 states have internal predecessors, (5872), 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 11:29:49,079 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 367.0) internal successors, (5872), 16 states have internal predecessors, (5872), 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 11:29:49,079 INFO L175 Difference]: Start difference. First operand has 228 places, 778 transitions, 18141 flow. Second operand 15 states and 2574 transitions. [2023-08-27 11:29:49,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 1156 transitions, 25903 flow [2023-08-27 11:30:50,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 1156 transitions, 24524 flow, removed 379 selfloop flow, removed 10 redundant places. [2023-08-27 11:30:50,439 INFO L231 Difference]: Finished difference. Result has 238 places, 876 transitions, 20962 flow [2023-08-27 11:30:50,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=16622, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=20962, PETRI_PLACES=238, PETRI_TRANSITIONS=876} [2023-08-27 11:30:50,440 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 163 predicate places. [2023-08-27 11:30:50,440 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 876 transitions, 20962 flow [2023-08-27 11:30:50,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.42857142857142) internal successors, (1074), 7 states have internal predecessors, (1074), 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 11:30:50,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:30:50,440 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:30:50,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-27 11:30:50,441 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:30:50,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:30:50,441 INFO L85 PathProgramCache]: Analyzing trace with hash 284869248, now seen corresponding path program 1 times [2023-08-27 11:30:50,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:30:50,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125772258] [2023-08-27 11:30:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:30:50,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:30:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:30:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:30:50,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:30:50,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125772258] [2023-08-27 11:30:50,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125772258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:30:50,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:30:50,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:30:50,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708714277] [2023-08-27 11:30:50,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:30:50,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:30:50,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:30:50,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:30:50,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:30:50,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 367 [2023-08-27 11:30:50,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 876 transitions, 20962 flow. Second operand has 7 states, 7 states have (on average 153.42857142857142) internal successors, (1074), 7 states have internal predecessors, (1074), 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 11:30:50,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:30:50,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 367 [2023-08-27 11:30:50,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:16,646 INFO L124 PetriNetUnfolderBase]: 68685/103745 cut-off events. [2023-08-27 11:31:16,647 INFO L125 PetriNetUnfolderBase]: For 3156965/3156965 co-relation queries the response was YES. [2023-08-27 11:31:18,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737884 conditions, 103745 events. 68685/103745 cut-off events. For 3156965/3156965 co-relation queries the response was YES. Maximal size of possible extension queue 4974. Compared 873826 event pairs, 14695 based on Foata normal form. 720/104450 useless extension candidates. Maximal degree in co-relation 720114. Up to 76053 conditions per place. [2023-08-27 11:31:18,468 INFO L140 encePairwiseOnDemand]: 347/367 looper letters, 931 selfloop transitions, 273 changer transitions 14/1225 dead transitions. [2023-08-27 11:31:18,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 1225 transitions, 29183 flow [2023-08-27 11:31:18,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 11:31:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 11:31:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1894 transitions. [2023-08-27 11:31:18,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46916026752539014 [2023-08-27 11:31:18,470 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1894 transitions. [2023-08-27 11:31:18,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1894 transitions. [2023-08-27 11:31:18,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:18,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1894 transitions. [2023-08-27 11:31:18,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 172.1818181818182) internal successors, (1894), 11 states have internal predecessors, (1894), 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 11:31:18,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 367.0) internal successors, (4404), 12 states have internal predecessors, (4404), 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 11:31:18,475 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 367.0) internal successors, (4404), 12 states have internal predecessors, (4404), 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 11:31:18,475 INFO L175 Difference]: Start difference. First operand has 238 places, 876 transitions, 20962 flow. Second operand 11 states and 1894 transitions. [2023-08-27 11:31:18,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 1225 transitions, 29183 flow [2023-08-27 11:32:43,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1225 transitions, 28402 flow, removed 382 selfloop flow, removed 2 redundant places. [2023-08-27 11:32:43,663 INFO L231 Difference]: Finished difference. Result has 251 places, 944 transitions, 23416 flow [2023-08-27 11:32:43,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=20227, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=876, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23416, PETRI_PLACES=251, PETRI_TRANSITIONS=944} [2023-08-27 11:32:43,664 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 176 predicate places. [2023-08-27 11:32:43,664 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 944 transitions, 23416 flow [2023-08-27 11:32:43,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.42857142857142) internal successors, (1074), 7 states have internal predecessors, (1074), 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 11:32:43,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:43,664 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:43,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-27 11:32:43,665 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:32:43,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:43,665 INFO L85 PathProgramCache]: Analyzing trace with hash 752028452, now seen corresponding path program 2 times [2023-08-27 11:32:43,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:43,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602810613] [2023-08-27 11:32:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:43,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:32:43,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:43,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602810613] [2023-08-27 11:32:43,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602810613] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:43,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312220974] [2023-08-27 11:32:43,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:32:43,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:43,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:43,729 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:32:43,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 11:32:43,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 11:32:43,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:32:43,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:32:43,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:32:43,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:32:43,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312220974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:43,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:32:43,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2023-08-27 11:32:43,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326648360] [2023-08-27 11:32:43,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:43,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:32:43,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:43,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:32:43,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-27 11:32:43,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 367 [2023-08-27 11:32:43,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 944 transitions, 23416 flow. Second operand has 6 states, 6 states have (on average 153.83333333333334) internal successors, (923), 6 states have internal predecessors, (923), 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 11:32:43,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:43,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 367 [2023-08-27 11:32:43,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:14,985 INFO L124 PetriNetUnfolderBase]: 75340/113604 cut-off events. [2023-08-27 11:33:14,985 INFO L125 PetriNetUnfolderBase]: For 4192969/4193077 co-relation queries the response was YES. [2023-08-27 11:33:16,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829038 conditions, 113604 events. 75340/113604 cut-off events. For 4192969/4193077 co-relation queries the response was YES. Maximal size of possible extension queue 5369. Compared 961450 event pairs, 12197 based on Foata normal form. 1809/115413 useless extension candidates. Maximal degree in co-relation 811717. Up to 28968 conditions per place. [2023-08-27 11:33:17,632 INFO L140 encePairwiseOnDemand]: 344/367 looper letters, 698 selfloop transitions, 840 changer transitions 9/1554 dead transitions. [2023-08-27 11:33:17,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1554 transitions, 38752 flow [2023-08-27 11:33:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:33:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:33:17,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2274 transitions. [2023-08-27 11:33:17,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766296373925802 [2023-08-27 11:33:17,634 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2274 transitions. [2023-08-27 11:33:17,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2274 transitions. [2023-08-27 11:33:17,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:17,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2274 transitions. [2023-08-27 11:33:17,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 174.92307692307693) internal successors, (2274), 13 states have internal predecessors, (2274), 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 11:33:17,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 367.0) internal successors, (5138), 14 states have internal predecessors, (5138), 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 11:33:17,638 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 367.0) internal successors, (5138), 14 states have internal predecessors, (5138), 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 11:33:17,638 INFO L175 Difference]: Start difference. First operand has 251 places, 944 transitions, 23416 flow. Second operand 13 states and 2274 transitions. [2023-08-27 11:33:17,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 1554 transitions, 38752 flow Received shutdown request... [2023-08-27 11:34:54,392 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 11:34:54,392 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 11:34:54,408 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 21 remaining) [2023-08-27 11:34:54,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 11:34:54,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:34:54,609 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-27 11:34:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-27 11:34:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (18 of 21 remaining) [2023-08-27 11:34:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-27 11:34:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-27 11:34:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-27 11:34:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-27 11:34:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-27 11:34:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-27 11:34:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-27 11:34:54,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-27 11:34:54,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-27 11:34:54,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-27 11:34:54,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-27 11:34:54,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-27 11:34:54,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-27 11:34:54,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-27 11:34:54,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-27 11:34:54,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-27 11:34:54,610 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-27 11:34:54,611 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-27 11:34:54,611 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:34:54,611 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT (1/2) [2023-08-27 11:34:54,612 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2023-08-27 11:34:54,612 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 11:34:54,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:34:54 BasicIcfg [2023-08-27 11:34:54,617 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 11:34:54,617 INFO L158 Benchmark]: Toolchain (without parser) took 780660.87ms. Allocated memory was 350.2MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 325.5MB in the beginning and 8.8GB in the end (delta: -8.5GB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. [2023-08-27 11:34:54,617 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 326.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 11:34:54,618 INFO L158 Benchmark]: CACSL2BoogieTranslator took 450.59ms. Allocated memory is still 350.2MB. Free memory was 325.5MB in the beginning and 305.7MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 11:34:54,618 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.61ms. Allocated memory is still 350.2MB. Free memory was 305.7MB in the beginning and 303.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:34:54,618 INFO L158 Benchmark]: Boogie Preprocessor took 37.19ms. Allocated memory is still 350.2MB. Free memory was 303.6MB in the beginning and 302.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:34:54,618 INFO L158 Benchmark]: RCFGBuilder took 324.79ms. Allocated memory is still 350.2MB. Free memory was 301.5MB in the beginning and 286.2MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 11:34:54,618 INFO L158 Benchmark]: TraceAbstraction took 779805.94ms. Allocated memory was 350.2MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 285.2MB in the beginning and 8.8GB in the end (delta: -8.5GB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. [2023-08-27 11:34:54,620 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 326.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 450.59ms. Allocated memory is still 350.2MB. Free memory was 325.5MB in the beginning and 305.7MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.61ms. Allocated memory is still 350.2MB. Free memory was 305.7MB in the beginning and 303.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.19ms. Allocated memory is still 350.2MB. Free memory was 303.6MB in the beginning and 302.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 324.79ms. Allocated memory is still 350.2MB. Free memory was 301.5MB in the beginning and 286.2MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 779805.94ms. Allocated memory was 350.2MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 285.2MB in the beginning and 8.8GB in the end (delta: -8.5GB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 118 PlacesBefore, 35 PlacesAfterwards, 127 TransitionsBefore, 41 TransitionsAfterwards, 3528 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 115 TotalNumberOfCompositions, 5892 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3672, independent: 3539, independent conditional: 0, independent unconditional: 3539, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1894, independent: 1865, independent conditional: 0, independent unconditional: 1865, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3672, independent: 1674, independent conditional: 0, independent unconditional: 1674, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 1894, unknown conditional: 0, unknown unconditional: 1894] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 112 PlacesBefore, 32 PlacesAfterwards, 121 TransitionsBefore, 38 TransitionsAfterwards, 3528 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 112 TotalNumberOfCompositions, 5558 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3649, independent: 3528, independent conditional: 0, independent unconditional: 3528, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1922, independent: 1891, independent conditional: 0, independent unconditional: 1891, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3649, independent: 1637, independent conditional: 0, independent unconditional: 1637, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 1922, unknown conditional: 0, unknown unconditional: 1922] , Statistics on independence cache: Total cache size (in pairs): 99, Positive cache size: 87, Positive conditional cache size: 0, Positive unconditional cache size: 87, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 153 PlacesBefore, 58 PlacesAfterwards, 168 TransitionsBefore, 71 TransitionsAfterwards, 11016 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 2 ChoiceCompositions, 136 TotalNumberOfCompositions, 26582 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12767, independent: 12419, independent conditional: 0, independent unconditional: 12419, dependent: 348, dependent conditional: 0, dependent unconditional: 348, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5723, independent: 5662, independent conditional: 0, independent unconditional: 5662, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12767, independent: 6757, independent conditional: 0, independent unconditional: 6757, dependent: 287, dependent conditional: 0, dependent unconditional: 287, unknown: 5723, unknown conditional: 0, unknown unconditional: 5723] , Statistics on independence cache: Total cache size (in pairs): 509, Positive cache size: 475, Positive conditional cache size: 0, Positive unconditional cache size: 475, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 153 PlacesBefore, 58 PlacesAfterwards, 168 TransitionsBefore, 71 TransitionsAfterwards, 11016 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 2 ChoiceCompositions, 136 TotalNumberOfCompositions, 26657 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14315, independent: 13970, independent conditional: 0, independent unconditional: 13970, dependent: 345, dependent conditional: 0, dependent unconditional: 345, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5907, independent: 5835, independent conditional: 0, independent unconditional: 5835, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14315, independent: 8135, independent conditional: 0, independent unconditional: 8135, dependent: 273, dependent conditional: 0, dependent unconditional: 273, unknown: 5907, unknown conditional: 0, unknown unconditional: 5907] , Statistics on independence cache: Total cache size (in pairs): 698, Positive cache size: 653, Positive conditional cache size: 0, Positive unconditional cache size: 653, Negative cache size: 45, Negative conditional cache size: 0, Negative unconditional cache size: 45, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 186 PlacesBefore, 75 PlacesAfterwards, 206 TransitionsBefore, 92 TransitionsAfterwards, 20736 CoEnabledTransitionPairs, 7 FixpointIterations, 34 TrivialSequentialCompositions, 102 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 3 ChoiceCompositions, 161 TotalNumberOfCompositions, 59482 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21253, independent: 20682, independent conditional: 0, independent unconditional: 20682, dependent: 571, dependent conditional: 0, dependent unconditional: 571, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10030, independent: 9949, independent conditional: 0, independent unconditional: 9949, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 21253, independent: 10733, independent conditional: 0, independent unconditional: 10733, dependent: 490, dependent conditional: 0, dependent unconditional: 490, unknown: 10030, unknown conditional: 0, unknown unconditional: 10030] , Statistics on independence cache: Total cache size (in pairs): 441, Positive cache size: 395, Positive conditional cache size: 0, Positive unconditional cache size: 395, Negative cache size: 46, Negative conditional cache size: 0, Negative unconditional cache size: 46, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 702]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 702]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 690]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 707]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 702]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 702]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 707]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 149 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 116 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 349 IncrementalHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 0 mSDtfsCounter, 349 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 SizeOfPredicates, 0 NumberOfNonLiveVariables, 144 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 180 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.0s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1414 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1414 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 126 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5344 IncrementalHoareTripleChecker+Invalid, 5470 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 126 mSolverCounterUnsat, 1 mSDtfsCounter, 5344 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=999occurred in iteration=11, InterpolantAutomatonStates: 203, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 512 NumberOfCodeBlocks, 504 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 556 ConstructedInterpolants, 0 QuantifiedInterpolants, 1626 SizeOfPredicates, 11 NumberOfNonLiveVariables, 980 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 33 InterpolantComputations, 19 PerfectInterpolantSequences, 34/61 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 211 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 754.7s, OverallIterations: 22, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 750.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3268 SdHoareTripleChecker+Valid, 5.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3268 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 307 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10577 IncrementalHoareTripleChecker+Invalid, 10884 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 307 mSolverCounterUnsat, 28 mSDtfsCounter, 10577 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23416occurred in iteration=21, InterpolantAutomatonStates: 195, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 401 NumberOfCodeBlocks, 390 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 1123 SizeOfPredicates, 2 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 25 InterpolantComputations, 21 PerfectInterpolantSequences, 74/79 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 149 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 180 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown