/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 -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_11-ptr_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:34:40,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:34:41,058 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 [2023-08-26 22:34:41,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:34:41,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:34:41,100 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:34:41,101 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:34:41,101 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:34:41,102 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:34:41,105 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:34:41,106 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:34:41,106 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:34:41,106 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:34:41,107 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:34:41,108 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:34:41,108 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:34:41,108 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:34:41,108 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:34:41,108 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:34:41,109 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:34:41,109 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:34:41,109 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:34:41,110 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:34:41,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:34:41,110 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:34:41,111 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:34:41,111 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:34:41,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:34:41,111 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:34:41,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:34:41,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:34:41,113 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:34:41,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:34:41,113 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:34:41,113 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:34:41,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:34:41,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:34:41,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:34:41,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:34:41,490 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:34:41,490 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:34:41,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-08-26 22:34:42,784 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:34:43,055 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:34:43,055 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-08-26 22:34:43,071 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94e67238/7317ff04a1114d98bd043ddf33918067/FLAG250042420 [2023-08-26 22:34:43,089 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94e67238/7317ff04a1114d98bd043ddf33918067 [2023-08-26 22:34:43,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:34:43,092 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:34:43,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:34:43,094 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:34:43,096 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:34:43,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:34:43" (1/1) ... [2023-08-26 22:34:43,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6750cf0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:34:43, skipping insertion in model container [2023-08-26 22:34:43,098 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:34:43" (1/1) ... [2023-08-26 22:34:43,127 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:34:43,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:34:43,477 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:34:43,504 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:34:43,505 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:34:43,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:34:43,578 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:34:43,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:34:43 WrapperNode [2023-08-26 22:34:43,579 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:34:43,580 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:34:43,580 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:34:43,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:34:43,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:34:43" (1/1) ... [2023-08-26 22:34:43,614 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:34:43" (1/1) ... [2023-08-26 22:34:43,643 INFO L138 Inliner]: procedures = 170, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2023-08-26 22:34:43,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:34:43,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:34:43,644 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:34:43,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:34:43,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:34:43" (1/1) ... [2023-08-26 22:34:43,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:34:43" (1/1) ... [2023-08-26 22:34:43,665 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:34:43" (1/1) ... [2023-08-26 22:34:43,665 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:34:43" (1/1) ... [2023-08-26 22:34:43,672 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:34:43" (1/1) ... [2023-08-26 22:34:43,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:34:43" (1/1) ... [2023-08-26 22:34:43,676 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:34:43" (1/1) ... [2023-08-26 22:34:43,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:34:43" (1/1) ... [2023-08-26 22:34:43,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:34:43,680 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:34:43,680 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:34:43,680 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:34:43,681 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:34:43" (1/1) ... [2023-08-26 22:34:43,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:34:43,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:34:43,716 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) [2023-08-26 22:34:43,721 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 [2023-08-26 22:34:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:34:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:34:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:34:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:34:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:34:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:34:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:34:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:34:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:34:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:34:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:34:43,756 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:34:43,887 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:34:43,888 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:34:44,058 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:34:44,065 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:34:44,066 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-26 22:34:44,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:34:44 BoogieIcfgContainer [2023-08-26 22:34:44,073 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:34:44,075 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:34:44,075 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:34:44,078 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:34:44,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:34:43" (1/3) ... [2023-08-26 22:34:44,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae20ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:34:44, skipping insertion in model container [2023-08-26 22:34:44,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:34:43" (2/3) ... [2023-08-26 22:34:44,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae20ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:34:44, skipping insertion in model container [2023-08-26 22:34:44,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:34:44" (3/3) ... [2023-08-26 22:34:44,082 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2023-08-26 22:34:44,095 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:34:44,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-26 22:34:44,095 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:34:44,179 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:34:44,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 137 transitions, 282 flow [2023-08-26 22:34:44,282 INFO L124 PetriNetUnfolderBase]: 19/178 cut-off events. [2023-08-26 22:34:44,282 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:34:44,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 178 events. 19/178 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 465 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-08-26 22:34:44,289 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 137 transitions, 282 flow [2023-08-26 22:34:44,293 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 134 transitions, 276 flow [2023-08-26 22:34:44,296 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:34:44,304 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 134 transitions, 276 flow [2023-08-26 22:34:44,306 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 134 transitions, 276 flow [2023-08-26 22:34:44,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 134 transitions, 276 flow [2023-08-26 22:34:44,334 INFO L124 PetriNetUnfolderBase]: 18/175 cut-off events. [2023-08-26 22:34:44,334 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:34:44,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 175 events. 18/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 459 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-08-26 22:34:44,338 INFO L119 LiptonReduction]: Number of co-enabled transitions 4182 [2023-08-26 22:34:47,665 INFO L134 LiptonReduction]: Checked pairs total: 7382 [2023-08-26 22:34:47,666 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-26 22:34:47,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:34:47,682 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;@77c988b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:34:47,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-26 22:34:47,685 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:34:47,685 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-08-26 22:34:47,686 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:34:47,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:34:47,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:34:47,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:34:47,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:34:47,691 INFO L85 PathProgramCache]: Analyzing trace with hash 16124142, now seen corresponding path program 1 times [2023-08-26 22:34:47,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:34:47,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912874169] [2023-08-26 22:34:47,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:34:47,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:34:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:34:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:34:47,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:34:47,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912874169] [2023-08-26 22:34:47,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912874169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:34:47,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:34:47,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:34:47,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590859555] [2023-08-26 22:34:47,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:34:47,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:34:47,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:34:47,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:34:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:34:47,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 259 [2023-08-26 22:34:47,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 42 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:47,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:34:47,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 259 [2023-08-26 22:34:47,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:34:48,090 INFO L124 PetriNetUnfolderBase]: 112/261 cut-off events. [2023-08-26 22:34:48,090 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:34:48,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 261 events. 112/261 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 994 event pairs, 91 based on Foata normal form. 9/202 useless extension candidates. Maximal degree in co-relation 499. Up to 236 conditions per place. [2023-08-26 22:34:48,093 INFO L140 encePairwiseOnDemand]: 244/259 looper letters, 40 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-26 22:34:48,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 182 flow [2023-08-26 22:34:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:34:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:34:48,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2023-08-26 22:34:48,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186615186615187 [2023-08-26 22:34:48,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2023-08-26 22:34:48,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2023-08-26 22:34:48,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:34:48,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2023-08-26 22:34:48,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:48,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:48,120 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:48,121 INFO L175 Difference]: Start difference. First operand has 36 places, 42 transitions, 92 flow. Second operand 3 states and 403 transitions. [2023-08-26 22:34:48,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 182 flow [2023-08-26 22:34:48,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:34:48,126 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 76 flow [2023-08-26 22:34:48,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-26 22:34:48,130 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-08-26 22:34:48,130 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 76 flow [2023-08-26 22:34:48,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:48,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:34:48,131 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:34:48,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:34:48,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:34:48,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:34:48,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1684556013, now seen corresponding path program 1 times [2023-08-26 22:34:48,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:34:48,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39979254] [2023-08-26 22:34:48,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:34:48,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:34:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:34:48,156 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:34:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:34:48,189 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:34:48,189 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:34:48,191 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2023-08-26 22:34:48,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-26 22:34:48,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-08-26 22:34:48,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-26 22:34:48,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-08-26 22:34:48,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (8 of 14 remaining) [2023-08-26 22:34:48,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-08-26 22:34:48,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-08-26 22:34:48,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-08-26 22:34:48,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-08-26 22:34:48,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-26 22:34:48,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-26 22:34:48,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-26 22:34:48,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-26 22:34:48,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:34:48,196 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 22:34:48,198 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:34:48,198 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:34:48,219 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:34:48,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 180 transitions, 378 flow [2023-08-26 22:34:48,255 INFO L124 PetriNetUnfolderBase]: 34/299 cut-off events. [2023-08-26 22:34:48,255 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:34:48,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 299 events. 34/299 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 964 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2023-08-26 22:34:48,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 180 transitions, 378 flow [2023-08-26 22:34:48,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 180 transitions, 378 flow [2023-08-26 22:34:48,261 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:34:48,261 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 180 transitions, 378 flow [2023-08-26 22:34:48,261 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 180 transitions, 378 flow [2023-08-26 22:34:48,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 180 transitions, 378 flow [2023-08-26 22:34:48,291 INFO L124 PetriNetUnfolderBase]: 34/299 cut-off events. [2023-08-26 22:34:48,291 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:34:48,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 299 events. 34/299 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 964 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2023-08-26 22:34:48,301 INFO L119 LiptonReduction]: Number of co-enabled transitions 13284 [2023-08-26 22:34:51,855 INFO L134 LiptonReduction]: Checked pairs total: 26549 [2023-08-26 22:34:51,856 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-08-26 22:34:51,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:34:51,858 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;@77c988b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:34:51,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-26 22:34:51,861 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:34:51,861 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 22:34:51,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:34:51,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:34:51,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:34:51,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:34:51,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:34:51,862 INFO L85 PathProgramCache]: Analyzing trace with hash 27764806, now seen corresponding path program 1 times [2023-08-26 22:34:51,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:34:51,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040567504] [2023-08-26 22:34:51,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:34:51,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:34:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:34:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:34:51,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:34:51,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040567504] [2023-08-26 22:34:51,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040567504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:34:51,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:34:51,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:34:51,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782674489] [2023-08-26 22:34:51,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:34:51,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:34:51,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:34:51,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:34:51,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:34:51,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 335 [2023-08-26 22:34:51,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:51,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:34:51,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 335 [2023-08-26 22:34:51,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:34:52,683 INFO L124 PetriNetUnfolderBase]: 4812/7988 cut-off events. [2023-08-26 22:34:52,683 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-08-26 22:34:52,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15742 conditions, 7988 events. 4812/7988 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 53159 event pairs, 2262 based on Foata normal form. 768/6096 useless extension candidates. Maximal degree in co-relation 1816. Up to 7633 conditions per place. [2023-08-26 22:34:52,736 INFO L140 encePairwiseOnDemand]: 316/335 looper letters, 59 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-26 22:34:52,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 276 flow [2023-08-26 22:34:52,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:34:52,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:34:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-08-26 22:34:52,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283582089552239 [2023-08-26 22:34:52,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-08-26 22:34:52,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-08-26 22:34:52,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:34:52,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-08-26 22:34:52,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:52,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:52,750 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:52,751 INFO L175 Difference]: Start difference. First operand has 56 places, 67 transitions, 152 flow. Second operand 3 states and 531 transitions. [2023-08-26 22:34:52,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 276 flow [2023-08-26 22:34:52,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:34:52,755 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 140 flow [2023-08-26 22:34:52,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-26 22:34:52,756 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-26 22:34:52,758 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 140 flow [2023-08-26 22:34:52,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:52,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:34:52,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:34:52,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:34:52,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:34:52,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:34:52,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2062968898, now seen corresponding path program 1 times [2023-08-26 22:34:52,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:34:52,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765387523] [2023-08-26 22:34:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:34:52,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:34:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:34:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:34:53,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:34:53,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765387523] [2023-08-26 22:34:53,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765387523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:34:53,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:34:53,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:34:53,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632108642] [2023-08-26 22:34:53,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:34:53,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:34:53,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:34:53,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:34:53,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:34:53,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 335 [2023-08-26 22:34:53,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:53,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:34:53,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 335 [2023-08-26 22:34:53,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:34:54,058 INFO L124 PetriNetUnfolderBase]: 6835/11357 cut-off events. [2023-08-26 22:34:54,058 INFO L125 PetriNetUnfolderBase]: For 571/571 co-relation queries the response was YES. [2023-08-26 22:34:54,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23352 conditions, 11357 events. 6835/11357 cut-off events. For 571/571 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 80627 event pairs, 1843 based on Foata normal form. 0/8076 useless extension candidates. Maximal degree in co-relation 20430. Up to 6577 conditions per place. [2023-08-26 22:34:54,198 INFO L140 encePairwiseOnDemand]: 323/335 looper letters, 135 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2023-08-26 22:34:54,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 160 transitions, 699 flow [2023-08-26 22:34:54,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:34:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:34:54,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 882 transitions. [2023-08-26 22:34:54,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388059701492537 [2023-08-26 22:34:54,212 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 882 transitions. [2023-08-26 22:34:54,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 882 transitions. [2023-08-26 22:34:54,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:34:54,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 882 transitions. [2023-08-26 22:34:54,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:54,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:54,220 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:54,220 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 140 flow. Second operand 6 states and 882 transitions. [2023-08-26 22:34:54,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 160 transitions, 699 flow [2023-08-26 22:34:54,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 160 transitions, 695 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:34:54,226 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 274 flow [2023-08-26 22:34:54,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2023-08-26 22:34:54,228 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2023-08-26 22:34:54,229 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 274 flow [2023-08-26 22:34:54,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:54,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:34:54,229 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:34:54,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:34:54,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:34:54,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:34:54,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1302564864, now seen corresponding path program 1 times [2023-08-26 22:34:54,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:34:54,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142304635] [2023-08-26 22:34:54,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:34:54,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:34:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:34:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:34:54,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:34:54,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142304635] [2023-08-26 22:34:54,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142304635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:34:54,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:34:54,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:34:54,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667595265] [2023-08-26 22:34:54,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:34:54,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:34:54,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:34:54,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:34:54,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:34:54,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 335 [2023-08-26 22:34:54,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:54,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:34:54,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 335 [2023-08-26 22:34:54,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:34:55,191 INFO L124 PetriNetUnfolderBase]: 6435/10634 cut-off events. [2023-08-26 22:34:55,191 INFO L125 PetriNetUnfolderBase]: For 4206/4206 co-relation queries the response was YES. [2023-08-26 22:34:55,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26569 conditions, 10634 events. 6435/10634 cut-off events. For 4206/4206 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 74764 event pairs, 2091 based on Foata normal form. 0/8537 useless extension candidates. Maximal degree in co-relation 21511. Up to 8672 conditions per place. [2023-08-26 22:34:55,264 INFO L140 encePairwiseOnDemand]: 331/335 looper letters, 90 selfloop transitions, 5 changer transitions 0/102 dead transitions. [2023-08-26 22:34:55,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 102 transitions, 564 flow [2023-08-26 22:34:55,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:34:55,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:34:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-26 22:34:55,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174129353233831 [2023-08-26 22:34:55,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-26 22:34:55,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-26 22:34:55,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:34:55,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-26 22:34:55,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:55,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:55,271 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:55,271 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 274 flow. Second operand 3 states and 520 transitions. [2023-08-26 22:34:55,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 102 transitions, 564 flow [2023-08-26 22:34:55,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 102 transitions, 564 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:34:55,284 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 291 flow [2023-08-26 22:34:55,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2023-08-26 22:34:55,285 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-08-26 22:34:55,285 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 291 flow [2023-08-26 22:34:55,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:55,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:34:55,286 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:34:55,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:34:55,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:34:55,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:34:55,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1302564863, now seen corresponding path program 1 times [2023-08-26 22:34:55,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:34:55,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473247596] [2023-08-26 22:34:55,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:34:55,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:34:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:34:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:34:55,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:34:55,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473247596] [2023-08-26 22:34:55,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473247596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:34:55,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:34:55,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:34:55,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372709452] [2023-08-26 22:34:55,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:34:55,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:34:55,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:34:55,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:34:55,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:34:55,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 335 [2023-08-26 22:34:55,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:55,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:34:55,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 335 [2023-08-26 22:34:55,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:34:56,205 INFO L124 PetriNetUnfolderBase]: 6035/10031 cut-off events. [2023-08-26 22:34:56,205 INFO L125 PetriNetUnfolderBase]: For 6245/6245 co-relation queries the response was YES. [2023-08-26 22:34:56,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25654 conditions, 10031 events. 6035/10031 cut-off events. For 6245/6245 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 70170 event pairs, 2102 based on Foata normal form. 214/8468 useless extension candidates. Maximal degree in co-relation 20765. Up to 8035 conditions per place. [2023-08-26 22:34:56,273 INFO L140 encePairwiseOnDemand]: 332/335 looper letters, 92 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-08-26 22:34:56,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 101 transitions, 575 flow [2023-08-26 22:34:56,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:34:56,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:34:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-08-26 22:34:56,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154228855721393 [2023-08-26 22:34:56,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-08-26 22:34:56,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-08-26 22:34:56,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:34:56,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-08-26 22:34:56,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:56,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:56,280 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:56,280 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 291 flow. Second operand 3 states and 518 transitions. [2023-08-26 22:34:56,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 101 transitions, 575 flow [2023-08-26 22:34:56,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 101 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:34:56,299 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 286 flow [2023-08-26 22:34:56,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2023-08-26 22:34:56,300 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-08-26 22:34:56,300 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 286 flow [2023-08-26 22:34:56,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:56,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:34:56,301 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:34:56,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:34:56,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:34:56,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:34:56,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1730693257, now seen corresponding path program 1 times [2023-08-26 22:34:56,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:34:56,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372912475] [2023-08-26 22:34:56,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:34:56,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:34:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:34:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:34:56,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:34:56,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372912475] [2023-08-26 22:34:56,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372912475] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:34:56,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266996759] [2023-08-26 22:34:56,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:34:56,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:34:56,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:34:56,552 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) [2023-08-26 22:34:56,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 22:34:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:34:56,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-26 22:34:56,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:34:56,723 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 22:34:56,724 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 22:34:56,750 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 22:34:56,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 22:34:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:34:56,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:34:56,891 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_58 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_58) |c_~#global~0.base|) |c_~#global~0.offset|)))) is different from false [2023-08-26 22:34:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-26 22:34:56,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266996759] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:34:56,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:34:56,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-26 22:34:56,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651790740] [2023-08-26 22:34:56,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:34:56,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 22:34:56,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:34:56,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 22:34:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=65, Unknown=1, NotChecked=16, Total=110 [2023-08-26 22:34:56,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 335 [2023-08-26 22:34:56,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 286 flow. Second operand has 11 states, 11 states have (on average 123.18181818181819) internal successors, (1355), 11 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:56,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:34:56,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 335 [2023-08-26 22:34:56,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:34:58,389 INFO L124 PetriNetUnfolderBase]: 7245/12430 cut-off events. [2023-08-26 22:34:58,389 INFO L125 PetriNetUnfolderBase]: For 7831/7831 co-relation queries the response was YES. [2023-08-26 22:34:58,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31414 conditions, 12430 events. 7245/12430 cut-off events. For 7831/7831 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 91018 event pairs, 2143 based on Foata normal form. 61/10431 useless extension candidates. Maximal degree in co-relation 27281. Up to 7297 conditions per place. [2023-08-26 22:34:58,463 INFO L140 encePairwiseOnDemand]: 323/335 looper letters, 116 selfloop transitions, 29 changer transitions 0/152 dead transitions. [2023-08-26 22:34:58,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 152 transitions, 873 flow [2023-08-26 22:34:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:34:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:34:58,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 851 transitions. [2023-08-26 22:34:58,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338308457711443 [2023-08-26 22:34:58,467 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 851 transitions. [2023-08-26 22:34:58,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 851 transitions. [2023-08-26 22:34:58,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:34:58,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 851 transitions. [2023-08-26 22:34:58,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 141.83333333333334) internal successors, (851), 6 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:58,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:58,473 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 335.0) internal successors, (2345), 7 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:58,473 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 286 flow. Second operand 6 states and 851 transitions. [2023-08-26 22:34:58,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 152 transitions, 873 flow [2023-08-26 22:34:58,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 152 transitions, 863 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:34:58,484 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 504 flow [2023-08-26 22:34:58,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=504, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2023-08-26 22:34:58,485 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2023-08-26 22:34:58,485 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 504 flow [2023-08-26 22:34:58,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 123.18181818181819) internal successors, (1355), 11 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:34:58,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:34:58,486 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 22:34:58,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 22:34:58,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:34:58,694 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:34:58,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:34:58,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1929308263, now seen corresponding path program 1 times [2023-08-26 22:34:58,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:34:58,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053349494] [2023-08-26 22:34:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:34:58,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:34:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:34:58,706 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:34:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:34:58,722 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:34:58,722 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:34:58,722 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-26 22:34:58,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-26 22:34:58,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-26 22:34:58,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-26 22:34:58,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-26 22:34:58,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (12 of 18 remaining) [2023-08-26 22:34:58,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-26 22:34:58,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-26 22:34:58,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-26 22:34:58,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-26 22:34:58,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-26 22:34:58,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-26 22:34:58,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-26 22:34:58,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-26 22:34:58,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-26 22:34:58,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-26 22:34:58,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-26 22:34:58,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-26 22:34:58,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:34:58,728 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-26 22:34:58,729 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:34:58,729 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 22:34:58,760 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 22:34:58,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 223 transitions, 476 flow [2023-08-26 22:34:58,815 INFO L124 PetriNetUnfolderBase]: 54/461 cut-off events. [2023-08-26 22:34:58,815 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:34:58,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 461 events. 54/461 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1664 event pairs, 1 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 307. Up to 16 conditions per place. [2023-08-26 22:34:58,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 223 transitions, 476 flow [2023-08-26 22:34:58,824 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 223 transitions, 476 flow [2023-08-26 22:34:58,824 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:34:58,824 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 223 transitions, 476 flow [2023-08-26 22:34:58,825 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 223 transitions, 476 flow [2023-08-26 22:34:58,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 223 transitions, 476 flow [2023-08-26 22:34:58,865 INFO L124 PetriNetUnfolderBase]: 54/461 cut-off events. [2023-08-26 22:34:58,865 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:34:58,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 461 events. 54/461 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1664 event pairs, 1 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 307. Up to 16 conditions per place. [2023-08-26 22:34:58,888 INFO L119 LiptonReduction]: Number of co-enabled transitions 25338 [2023-08-26 22:35:02,976 INFO L134 LiptonReduction]: Checked pairs total: 55939 [2023-08-26 22:35:02,976 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-26 22:35:02,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:35:02,978 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;@77c988b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:35:02,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-26 22:35:02,980 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:35:02,981 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2023-08-26 22:35:02,981 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:35:02,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:35:02,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:35:02,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:35:02,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:35:02,982 INFO L85 PathProgramCache]: Analyzing trace with hash 41830088, now seen corresponding path program 1 times [2023-08-26 22:35:02,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:35:02,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564729397] [2023-08-26 22:35:02,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:35:02,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:35:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:35:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:35:03,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:35:03,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564729397] [2023-08-26 22:35:03,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564729397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:35:03,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:35:03,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:35:03,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126404892] [2023-08-26 22:35:03,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:35:03,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:35:03,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:35:03,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:35:03,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:35:03,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 414 [2023-08-26 22:35:03,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 91 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:03,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:35:03,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 414 [2023-08-26 22:35:03,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:35:11,818 INFO L124 PetriNetUnfolderBase]: 107413/153807 cut-off events. [2023-08-26 22:35:11,819 INFO L125 PetriNetUnfolderBase]: For 2441/2441 co-relation queries the response was YES. [2023-08-26 22:35:12,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304386 conditions, 153807 events. 107413/153807 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 4147. Compared 1171573 event pairs, 69876 based on Foata normal form. 16908/120095 useless extension candidates. Maximal degree in co-relation 26680. Up to 148930 conditions per place. [2023-08-26 22:35:12,630 INFO L140 encePairwiseOnDemand]: 388/414 looper letters, 74 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-26 22:35:12,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 352 flow [2023-08-26 22:35:12,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:35:12,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:35:12,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2023-08-26 22:35:12,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297906602254429 [2023-08-26 22:35:12,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2023-08-26 22:35:12,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2023-08-26 22:35:12,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:35:12,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2023-08-26 22:35:12,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:12,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:12,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:12,640 INFO L175 Difference]: Start difference. First operand has 74 places, 91 transitions, 212 flow. Second operand 3 states and 658 transitions. [2023-08-26 22:35:12,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 352 flow [2023-08-26 22:35:12,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 85 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:35:12,643 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 186 flow [2023-08-26 22:35:12,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-08-26 22:35:12,645 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-08-26 22:35:12,645 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 186 flow [2023-08-26 22:35:12,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:12,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:35:12,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:35:12,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 22:35:12,646 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:35:12,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:35:12,646 INFO L85 PathProgramCache]: Analyzing trace with hash 484404034, now seen corresponding path program 1 times [2023-08-26 22:35:12,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:35:12,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866509673] [2023-08-26 22:35:12,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:35:12,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:35:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:35:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:35:12,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:35:12,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866509673] [2023-08-26 22:35:12,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866509673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:35:12,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:35:12,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:35:12,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341895552] [2023-08-26 22:35:12,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:35:12,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:35:12,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:35:12,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:35:12,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:35:12,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 414 [2023-08-26 22:35:12,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:12,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:35:12,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 414 [2023-08-26 22:35:12,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:35:25,532 INFO L124 PetriNetUnfolderBase]: 158285/228096 cut-off events. [2023-08-26 22:35:25,532 INFO L125 PetriNetUnfolderBase]: For 9664/9664 co-relation queries the response was YES. [2023-08-26 22:35:25,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463645 conditions, 228096 events. 158285/228096 cut-off events. For 9664/9664 co-relation queries the response was YES. Maximal size of possible extension queue 6214. Compared 1854936 event pairs, 43379 based on Foata normal form. 0/160301 useless extension candidates. Maximal degree in co-relation 463556. Up to 144616 conditions per place. [2023-08-26 22:35:26,617 INFO L140 encePairwiseOnDemand]: 400/414 looper letters, 186 selfloop transitions, 24 changer transitions 0/219 dead transitions. [2023-08-26 22:35:26,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 219 transitions, 963 flow [2023-08-26 22:35:26,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:35:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:35:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1119 transitions. [2023-08-26 22:35:26,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504830917874396 [2023-08-26 22:35:26,621 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1119 transitions. [2023-08-26 22:35:26,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1119 transitions. [2023-08-26 22:35:26,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:35:26,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1119 transitions. [2023-08-26 22:35:26,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.5) internal successors, (1119), 6 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:26,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:26,629 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:26,630 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 186 flow. Second operand 6 states and 1119 transitions. [2023-08-26 22:35:26,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 219 transitions, 963 flow [2023-08-26 22:35:26,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 219 transitions, 959 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:35:26,675 INFO L231 Difference]: Finished difference. Result has 86 places, 94 transitions, 360 flow [2023-08-26 22:35:26,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=360, PETRI_PLACES=86, PETRI_TRANSITIONS=94} [2023-08-26 22:35:26,678 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2023-08-26 22:35:26,678 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 94 transitions, 360 flow [2023-08-26 22:35:26,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:26,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:35:26,678 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:35:26,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 22:35:26,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:35:26,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:35:26,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1033401995, now seen corresponding path program 1 times [2023-08-26 22:35:26,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:35:26,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142508604] [2023-08-26 22:35:26,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:35:26,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:35:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:35:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:35:26,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:35:26,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142508604] [2023-08-26 22:35:26,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142508604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:35:26,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:35:26,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:35:26,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36631528] [2023-08-26 22:35:26,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:35:26,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:35:26,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:35:26,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:35:26,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:35:26,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 414 [2023-08-26 22:35:26,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 94 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:26,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:35:26,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 414 [2023-08-26 22:35:26,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:35:39,867 INFO L124 PetriNetUnfolderBase]: 149917/214252 cut-off events. [2023-08-26 22:35:39,867 INFO L125 PetriNetUnfolderBase]: For 76886/76886 co-relation queries the response was YES. [2023-08-26 22:35:40,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518931 conditions, 214252 events. 149917/214252 cut-off events. For 76886/76886 co-relation queries the response was YES. Maximal size of possible extension queue 5860. Compared 1723059 event pairs, 48315 based on Foata normal form. 0/165642 useless extension candidates. Maximal degree in co-relation 409178. Up to 177914 conditions per place. [2023-08-26 22:35:41,053 INFO L140 encePairwiseOnDemand]: 410/414 looper letters, 126 selfloop transitions, 5 changer transitions 0/140 dead transitions. [2023-08-26 22:35:41,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 140 transitions, 764 flow [2023-08-26 22:35:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:35:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:35:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2023-08-26 22:35:41,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257648953301127 [2023-08-26 22:35:41,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2023-08-26 22:35:41,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2023-08-26 22:35:41,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:35:41,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2023-08-26 22:35:41,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:41,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:41,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:41,060 INFO L175 Difference]: Start difference. First operand has 86 places, 94 transitions, 360 flow. Second operand 3 states and 653 transitions. [2023-08-26 22:35:41,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 140 transitions, 764 flow [2023-08-26 22:35:41,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 140 transitions, 764 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:35:41,222 INFO L231 Difference]: Finished difference. Result has 88 places, 94 transitions, 377 flow [2023-08-26 22:35:41,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=88, PETRI_TRANSITIONS=94} [2023-08-26 22:35:41,223 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2023-08-26 22:35:41,223 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 377 flow [2023-08-26 22:35:41,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:41,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:35:41,223 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:35:41,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 22:35:41,224 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:35:41,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:35:41,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1033401996, now seen corresponding path program 1 times [2023-08-26 22:35:41,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:35:41,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412767619] [2023-08-26 22:35:41,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:35:41,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:35:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:35:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:35:41,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:35:41,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412767619] [2023-08-26 22:35:41,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412767619] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:35:41,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436891852] [2023-08-26 22:35:41,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:35:41,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:35:41,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:35:41,259 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) [2023-08-26 22:35:41,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 22:35:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:35:41,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 22:35:41,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:35:41,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:35:41,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:35:41,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436891852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:35:41,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:35:41,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-26 22:35:41,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936647087] [2023-08-26 22:35:41,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:35:41,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:35:41,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:35:41,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:35:41,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:35:41,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 414 [2023-08-26 22:35:41,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:41,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:35:41,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 414 [2023-08-26 22:35:41,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:35:53,983 INFO L124 PetriNetUnfolderBase]: 141549/202896 cut-off events. [2023-08-26 22:35:53,983 INFO L125 PetriNetUnfolderBase]: For 104652/104652 co-relation queries the response was YES. [2023-08-26 22:35:54,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499665 conditions, 202896 events. 141549/202896 cut-off events. For 104652/104652 co-relation queries the response was YES. Maximal size of possible extension queue 5571. Compared 1630643 event pairs, 30524 based on Foata normal form. 3066/162752 useless extension candidates. Maximal degree in co-relation 396416. Up to 166457 conditions per place. [2023-08-26 22:35:55,082 INFO L140 encePairwiseOnDemand]: 410/414 looper letters, 138 selfloop transitions, 3 changer transitions 0/150 dead transitions. [2023-08-26 22:35:55,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 150 transitions, 829 flow [2023-08-26 22:35:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:35:55,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:35:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 848 transitions. [2023-08-26 22:35:55,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120772946859904 [2023-08-26 22:35:55,085 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 848 transitions. [2023-08-26 22:35:55,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 848 transitions. [2023-08-26 22:35:55,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:35:55,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 848 transitions. [2023-08-26 22:35:55,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:55,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 414.0) internal successors, (2070), 5 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:55,090 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 414.0) internal successors, (2070), 5 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:55,090 INFO L175 Difference]: Start difference. First operand has 88 places, 94 transitions, 377 flow. Second operand 4 states and 848 transitions. [2023-08-26 22:35:55,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 150 transitions, 829 flow [2023-08-26 22:35:55,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 150 transitions, 824 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:35:55,210 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 374 flow [2023-08-26 22:35:55,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2023-08-26 22:35:55,210 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 15 predicate places. [2023-08-26 22:35:55,211 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 374 flow [2023-08-26 22:35:55,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.75) internal successors, (743), 4 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:55,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:35:55,211 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:35:55,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 22:35:55,412 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,SelfDestructingSolverStorable11 [2023-08-26 22:35:55,413 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:35:55,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:35:55,413 INFO L85 PathProgramCache]: Analyzing trace with hash -217972301, now seen corresponding path program 1 times [2023-08-26 22:35:55,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:35:55,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863603144] [2023-08-26 22:35:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:35:55,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:35:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:35:55,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:35:55,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:35:55,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863603144] [2023-08-26 22:35:55,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863603144] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:35:55,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333897016] [2023-08-26 22:35:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:35:55,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:35:55,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:35:55,544 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) [2023-08-26 22:35:55,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 22:35:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:35:55,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-26 22:35:55,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:35:55,641 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 22:35:55,641 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 22:35:55,664 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 22:35:55,725 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 22:35:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:35:55,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:35:55,787 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_120 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_120) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2023-08-26 22:35:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-26 22:35:55,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333897016] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:35:55,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:35:55,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-26 22:35:55,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633860734] [2023-08-26 22:35:55,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:35:55,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 22:35:55,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:35:55,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 22:35:55,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=64, Unknown=3, NotChecked=16, Total=110 [2023-08-26 22:35:55,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 414 [2023-08-26 22:35:55,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 374 flow. Second operand has 11 states, 11 states have (on average 153.1818181818182) internal successors, (1685), 11 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:35:55,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:35:55,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 414 [2023-08-26 22:35:55,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:36:09,780 INFO L124 PetriNetUnfolderBase]: 148591/216606 cut-off events. [2023-08-26 22:36:09,781 INFO L125 PetriNetUnfolderBase]: For 118939/118939 co-relation queries the response was YES. [2023-08-26 22:36:10,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529819 conditions, 216606 events. 148591/216606 cut-off events. For 118939/118939 co-relation queries the response was YES. Maximal size of possible extension queue 6079. Compared 1766792 event pairs, 60192 based on Foata normal form. 421/171457 useless extension candidates. Maximal degree in co-relation 417505. Up to 179085 conditions per place. [2023-08-26 22:36:11,079 INFO L140 encePairwiseOnDemand]: 402/414 looper letters, 166 selfloop transitions, 30 changer transitions 0/205 dead transitions. [2023-08-26 22:36:11,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 205 transitions, 1160 flow [2023-08-26 22:36:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:36:11,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:36:11,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1077 transitions. [2023-08-26 22:36:11,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335748792270531 [2023-08-26 22:36:11,082 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1077 transitions. [2023-08-26 22:36:11,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1077 transitions. [2023-08-26 22:36:11,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:36:11,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1077 transitions. [2023-08-26 22:36:11,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 179.5) internal successors, (1077), 6 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:36:11,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:36:11,087 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 414.0) internal successors, (2898), 7 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:36:11,087 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 374 flow. Second operand 6 states and 1077 transitions. [2023-08-26 22:36:11,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 205 transitions, 1160 flow [2023-08-26 22:36:11,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 205 transitions, 1150 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:36:11,324 INFO L231 Difference]: Finished difference. Result has 95 places, 111 transitions, 588 flow [2023-08-26 22:36:11,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=588, PETRI_PLACES=95, PETRI_TRANSITIONS=111} [2023-08-26 22:36:11,324 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2023-08-26 22:36:11,324 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 111 transitions, 588 flow [2023-08-26 22:36:11,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 153.1818181818182) internal successors, (1685), 11 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:36:11,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:36:11,325 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:36:11,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 22:36:11,528 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 [2023-08-26 22:36:11,529 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:36:11,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:36:11,529 INFO L85 PathProgramCache]: Analyzing trace with hash 972065348, now seen corresponding path program 1 times [2023-08-26 22:36:11,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:36:11,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761717782] [2023-08-26 22:36:11,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:36:11,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:36:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:36:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:36:11,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:36:11,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761717782] [2023-08-26 22:36:11,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761717782] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:36:11,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095576688] [2023-08-26 22:36:11,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:36:11,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:36:11,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:36:11,658 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) [2023-08-26 22:36:11,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 22:36:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:36:11,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-26 22:36:11,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:36:11,755 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 22:36:11,755 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 22:36:11,777 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 22:36:11,803 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 22:36:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:36:11,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:36:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:36:11,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095576688] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:36:11,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:36:11,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-26 22:36:11,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274087693] [2023-08-26 22:36:11,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:36:11,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 22:36:11,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:36:11,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 22:36:11,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2023-08-26 22:36:11,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 414 [2023-08-26 22:36:11,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 588 flow. Second operand has 11 states, 11 states have (on average 153.45454545454547) internal successors, (1688), 11 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:36:11,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:36:11,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 414 [2023-08-26 22:36:11,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:36:42,114 INFO L124 PetriNetUnfolderBase]: 257326/376412 cut-off events. [2023-08-26 22:36:42,114 INFO L125 PetriNetUnfolderBase]: For 358663/358663 co-relation queries the response was YES. [2023-08-26 22:36:43,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974189 conditions, 376412 events. 257326/376412 cut-off events. For 358663/358663 co-relation queries the response was YES. Maximal size of possible extension queue 11627. Compared 3328000 event pairs, 28879 based on Foata normal form. 0/307893 useless extension candidates. Maximal degree in co-relation 856395. Up to 113401 conditions per place. [2023-08-26 22:36:44,870 INFO L140 encePairwiseOnDemand]: 399/414 looper letters, 477 selfloop transitions, 172 changer transitions 0/658 dead transitions. [2023-08-26 22:36:44,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 658 transitions, 4075 flow [2023-08-26 22:36:44,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 22:36:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 22:36:44,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3135 transitions. [2023-08-26 22:36:44,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4454390451832907 [2023-08-26 22:36:44,877 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3135 transitions. [2023-08-26 22:36:44,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3135 transitions. [2023-08-26 22:36:44,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:36:44,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3135 transitions. [2023-08-26 22:36:44,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 184.41176470588235) internal successors, (3135), 17 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:36:44,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 414.0) internal successors, (7452), 18 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:36:44,892 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 414.0) internal successors, (7452), 18 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:36:44,893 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 588 flow. Second operand 17 states and 3135 transitions. [2023-08-26 22:36:44,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 658 transitions, 4075 flow [2023-08-26 22:36:45,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 658 transitions, 4075 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:36:45,644 INFO L231 Difference]: Finished difference. Result has 125 places, 254 transitions, 2264 flow [2023-08-26 22:36:45,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2264, PETRI_PLACES=125, PETRI_TRANSITIONS=254} [2023-08-26 22:36:45,644 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 51 predicate places. [2023-08-26 22:36:45,644 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 254 transitions, 2264 flow [2023-08-26 22:36:45,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 153.45454545454547) internal successors, (1688), 11 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:36:45,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:36:45,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:36:45,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 22:36:45,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:36:45,847 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:36:45,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:36:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2058042952, now seen corresponding path program 1 times [2023-08-26 22:36:45,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:36:45,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980289647] [2023-08-26 22:36:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:36:45,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:36:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:36:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:36:45,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:36:45,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980289647] [2023-08-26 22:36:45,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980289647] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:36:45,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:36:45,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:36:45,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915477678] [2023-08-26 22:36:45,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:36:45,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:36:45,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:36:45,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:36:45,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:36:45,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 414 [2023-08-26 22:36:45,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 254 transitions, 2264 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:36:45,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:36:45,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 414 [2023-08-26 22:36:45,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:37:32,523 INFO L124 PetriNetUnfolderBase]: 314642/458191 cut-off events. [2023-08-26 22:37:32,523 INFO L125 PetriNetUnfolderBase]: For 1415506/1415506 co-relation queries the response was YES. [2023-08-26 22:37:35,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526755 conditions, 458191 events. 314642/458191 cut-off events. For 1415506/1415506 co-relation queries the response was YES. Maximal size of possible extension queue 13907. Compared 4113819 event pairs, 184905 based on Foata normal form. 0/401390 useless extension candidates. Maximal degree in co-relation 1442127. Up to 305838 conditions per place. [2023-08-26 22:37:37,413 INFO L140 encePairwiseOnDemand]: 407/414 looper letters, 302 selfloop transitions, 62 changer transitions 0/373 dead transitions. [2023-08-26 22:37:37,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 373 transitions, 3865 flow [2023-08-26 22:37:37,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:37:37,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:37:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2023-08-26 22:37:37,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4677938808373591 [2023-08-26 22:37:37,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2023-08-26 22:37:37,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2023-08-26 22:37:37,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:37:37,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2023-08-26 22:37:37,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:37:37,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:37:37,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:37:37,419 INFO L175 Difference]: Start difference. First operand has 125 places, 254 transitions, 2264 flow. Second operand 3 states and 581 transitions. [2023-08-26 22:37:37,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 373 transitions, 3865 flow [2023-08-26 22:40:40,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 373 transitions, 3732 flow, removed 20 selfloop flow, removed 1 redundant places. [2023-08-26 22:40:40,123 INFO L231 Difference]: Finished difference. Result has 128 places, 279 transitions, 2698 flow [2023-08-26 22:40:40,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=2178, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2698, PETRI_PLACES=128, PETRI_TRANSITIONS=279} [2023-08-26 22:40:40,124 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 54 predicate places. [2023-08-26 22:40:40,124 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 279 transitions, 2698 flow [2023-08-26 22:40:40,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:40,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:40:40,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:40:40,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 22:40:40,125 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:40:40,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:40:40,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2058042932, now seen corresponding path program 1 times [2023-08-26 22:40:40,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:40:40,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207358874] [2023-08-26 22:40:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:40:40,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:40:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:40:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:40:40,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:40:40,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207358874] [2023-08-26 22:40:40,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207358874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:40:40,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:40:40,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 22:40:40,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135581999] [2023-08-26 22:40:40,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:40:40,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:40:40,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:40:40,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:40:40,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:40:40,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 414 [2023-08-26 22:40:40,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 279 transitions, 2698 flow. Second operand has 7 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:40:40,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:40:40,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 414 [2023-08-26 22:40:40,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:51,560 INFO L124 PetriNetUnfolderBase]: 432397/630067 cut-off events. [2023-08-26 22:41:51,560 INFO L125 PetriNetUnfolderBase]: For 2367403/2367403 co-relation queries the response was YES. [2023-08-26 22:41:55,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179218 conditions, 630067 events. 432397/630067 cut-off events. For 2367403/2367403 co-relation queries the response was YES. Maximal size of possible extension queue 19792. Compared 5848619 event pairs, 104216 based on Foata normal form. 6356/566541 useless extension candidates. Maximal degree in co-relation 2057925. Up to 311176 conditions per place. [2023-08-26 22:41:58,602 INFO L140 encePairwiseOnDemand]: 398/414 looper letters, 648 selfloop transitions, 315 changer transitions 0/972 dead transitions. [2023-08-26 22:41:58,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 972 transitions, 9218 flow [2023-08-26 22:41:58,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 22:41:58,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 22:41:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2694 transitions. [2023-08-26 22:41:58,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43381642512077295 [2023-08-26 22:41:58,608 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2694 transitions. [2023-08-26 22:41:58,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2694 transitions. [2023-08-26 22:41:58,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:58,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2694 transitions. [2023-08-26 22:41:58,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 179.6) internal successors, (2694), 15 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:58,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 414.0) internal successors, (6624), 16 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:58,621 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 414.0) internal successors, (6624), 16 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:58,621 INFO L175 Difference]: Start difference. First operand has 128 places, 279 transitions, 2698 flow. Second operand 15 states and 2694 transitions. [2023-08-26 22:41:58,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 972 transitions, 9218 flow Received shutdown request... [2023-08-26 22:47:39,245 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 [2023-08-26 22:47:40,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown