/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/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:25:44,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:25:44,661 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 22:25:44,665 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:25:44,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:25:44,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:25:44,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:25:44,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:25:44,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:25:44,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:25:44,691 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:25:44,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:25:44,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:25:44,692 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:25:44,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:25:44,695 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:25:44,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:25:44,698 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:25:44,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:25:44,699 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:25:44,700 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:25:44,701 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:25:44,701 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:25:44,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:25:44,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:25:44,702 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:25:44,703 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:25:44,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:25:44,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:25:44,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:25:44,704 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:25:44,704 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:25:44,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:25:44,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:25:44,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:25:44,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:25:45,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:25:45,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:25:45,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:25:45,071 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:25:45,071 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:25:45,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-26 22:25:46,207 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:25:46,467 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:25:46,467 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-26 22:25:46,485 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d100ae8/d0ec4787b45d4e1c9fdcb7a5317f7f45/FLAGb063067da [2023-08-26 22:25:46,499 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d100ae8/d0ec4787b45d4e1c9fdcb7a5317f7f45 [2023-08-26 22:25:46,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:25:46,503 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:25:46,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:25:46,504 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:25:46,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:25:46,507 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:25:46" (1/1) ... [2023-08-26 22:25:46,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d7eb01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:25:46, skipping insertion in model container [2023-08-26 22:25:46,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:25:46" (1/1) ... [2023-08-26 22:25:46,549 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:25:46,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:25:46,903 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:25:46,931 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 22:25:46,933 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-26 22:25:46,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:25:46,990 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:25:46,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:25:46 WrapperNode [2023-08-26 22:25:46,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:25:46,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:25:46,994 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:25:46,994 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:25:46,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:25:46" (1/1) ... [2023-08-26 22:25:47,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:25:46" (1/1) ... [2023-08-26 22:25:47,057 INFO L138 Inliner]: procedures = 165, calls = 36, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 131 [2023-08-26 22:25:47,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:25:47,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:25:47,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:25:47,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:25:47,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:25:46" (1/1) ... [2023-08-26 22:25:47,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:25:46" (1/1) ... [2023-08-26 22:25:47,081 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:25:46" (1/1) ... [2023-08-26 22:25:47,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:25:46" (1/1) ... [2023-08-26 22:25:47,087 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:25:46" (1/1) ... [2023-08-26 22:25:47,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:25:46" (1/1) ... [2023-08-26 22:25:47,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:25:46" (1/1) ... [2023-08-26 22:25:47,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:25:46" (1/1) ... [2023-08-26 22:25:47,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:25:47,105 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:25:47,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:25:47,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:25:47,106 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:25:46" (1/1) ... [2023-08-26 22:25:47,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:25:47,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:25:47,134 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 22:25:47,148 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 22:25:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:25:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-26 22:25:47,172 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-26 22:25:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:25:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:25:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:25:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:25:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:25:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:25:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:25:47,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:25:47,174 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 22:25:47,297 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:25:47,298 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:25:47,488 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:25:47,494 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:25:47,495 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-26 22:25:47,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:25:47 BoogieIcfgContainer [2023-08-26 22:25:47,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:25:47,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:25:47,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:25:47,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:25:47,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:25:46" (1/3) ... [2023-08-26 22:25:47,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131f72b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:25:47, skipping insertion in model container [2023-08-26 22:25:47,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:25:46" (2/3) ... [2023-08-26 22:25:47,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131f72b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:25:47, skipping insertion in model container [2023-08-26 22:25:47,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:25:47" (3/3) ... [2023-08-26 22:25:47,505 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-08-26 22:25:47,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:25:47,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-26 22:25:47,518 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:25:47,604 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 22:25:47,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 149 transitions, 303 flow [2023-08-26 22:25:47,727 INFO L124 PetriNetUnfolderBase]: 12/148 cut-off events. [2023-08-26 22:25:47,727 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:25:47,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 148 events. 12/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 322 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-08-26 22:25:47,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 149 transitions, 303 flow [2023-08-26 22:25:47,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 148 transitions, 299 flow [2023-08-26 22:25:47,747 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:25:47,758 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 148 transitions, 299 flow [2023-08-26 22:25:47,761 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 148 transitions, 299 flow [2023-08-26 22:25:47,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 148 transitions, 299 flow [2023-08-26 22:25:47,816 INFO L124 PetriNetUnfolderBase]: 12/148 cut-off events. [2023-08-26 22:25:47,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:25:47,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 148 events. 12/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 322 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-08-26 22:25:47,823 INFO L119 LiptonReduction]: Number of co-enabled transitions 5984 [2023-08-26 22:25:51,909 INFO L134 LiptonReduction]: Checked pairs total: 8283 [2023-08-26 22:25:51,909 INFO L136 LiptonReduction]: Total number of compositions: 152 [2023-08-26 22:25:51,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:25:51,925 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;@6eb0e8da, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:25:51,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-26 22:25:51,928 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:25:51,928 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2023-08-26 22:25:51,929 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:25:51,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:25:51,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:25:51,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:25:51,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:25:51,933 INFO L85 PathProgramCache]: Analyzing trace with hash 571140581, now seen corresponding path program 1 times [2023-08-26 22:25:51,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:25:51,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924189407] [2023-08-26 22:25:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:51,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:25:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:52,505 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 22:25:52,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:25:52,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924189407] [2023-08-26 22:25:52,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924189407] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:25:52,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:25:52,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:25:52,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137332074] [2023-08-26 22:25:52,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:25:52,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:25:52,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:25:52,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:25:52,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 22:25:52,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 301 [2023-08-26 22:25:52,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 34 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 22:25:52,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:25:52,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 301 [2023-08-26 22:25:52,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:25:52,720 INFO L124 PetriNetUnfolderBase]: 227/420 cut-off events. [2023-08-26 22:25:52,720 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:25:52,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 420 events. 227/420 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1591 event pairs, 110 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 831. Up to 348 conditions per place. [2023-08-26 22:25:52,724 INFO L140 encePairwiseOnDemand]: 294/301 looper letters, 50 selfloop transitions, 4 changer transitions 2/58 dead transitions. [2023-08-26 22:25:52,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 58 transitions, 231 flow [2023-08-26 22:25:52,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:25:52,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:25:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 498 transitions. [2023-08-26 22:25:52,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41362126245847175 [2023-08-26 22:25:52,743 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 498 transitions. [2023-08-26 22:25:52,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 498 transitions. [2023-08-26 22:25:52,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:25:52,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 498 transitions. [2023-08-26 22:25:52,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.5) internal successors, (498), 4 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:25:52,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 22:25:52,759 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 22:25:52,761 INFO L175 Difference]: Start difference. First operand has 32 places, 34 transitions, 71 flow. Second operand 4 states and 498 transitions. [2023-08-26 22:25:52,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 58 transitions, 231 flow [2023-08-26 22:25:52,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 58 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:25:52,765 INFO L231 Difference]: Finished difference. Result has 35 places, 35 transitions, 93 flow [2023-08-26 22:25:52,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2023-08-26 22:25:52,770 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-08-26 22:25:52,770 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 93 flow [2023-08-26 22:25:52,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 22:25:52,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:25:52,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:25:52,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:25:52,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:25:52,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:25:52,779 INFO L85 PathProgramCache]: Analyzing trace with hash 575520558, now seen corresponding path program 1 times [2023-08-26 22:25:52,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:25:52,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800910868] [2023-08-26 22:25:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:52,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:25:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:52,833 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 22:25:52,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:25:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800910868] [2023-08-26 22:25:52,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800910868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:25:52,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:25:52,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:25:52,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470752146] [2023-08-26 22:25:52,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:25:52,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:25:52,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:25:52,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:25:52,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:25:52,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 301 [2023-08-26 22:25:52,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 22:25:52,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:25:52,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 301 [2023-08-26 22:25:52,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:25:52,963 INFO L124 PetriNetUnfolderBase]: 268/498 cut-off events. [2023-08-26 22:25:52,963 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-08-26 22:25:52,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 498 events. 268/498 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1836 event pairs, 97 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 1090. Up to 374 conditions per place. [2023-08-26 22:25:52,967 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 46 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2023-08-26 22:25:52,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 247 flow [2023-08-26 22:25:52,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:25:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:25:52,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-08-26 22:25:52,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363233665559247 [2023-08-26 22:25:52,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-08-26 22:25:52,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-08-26 22:25:52,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:25:52,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-08-26 22:25:52,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 22:25:52,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 22:25:52,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 22:25:52,973 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 93 flow. Second operand 3 states and 394 transitions. [2023-08-26 22:25:52,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 247 flow [2023-08-26 22:25:52,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 247 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:25:52,974 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 133 flow [2023-08-26 22:25:52,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-08-26 22:25:52,975 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2023-08-26 22:25:52,975 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 133 flow [2023-08-26 22:25:52,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 22:25:52,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:25:52,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:25:52,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:25:52,976 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:25:52,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:25:52,977 INFO L85 PathProgramCache]: Analyzing trace with hash 575520557, now seen corresponding path program 1 times [2023-08-26 22:25:52,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:25:52,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986982714] [2023-08-26 22:25:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:52,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:25:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:53,156 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 22:25:53,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:25:53,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986982714] [2023-08-26 22:25:53,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986982714] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:25:53,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:25:53,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:25:53,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386218388] [2023-08-26 22:25:53,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:25:53,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:25:53,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:25:53,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:25:53,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 22:25:53,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 301 [2023-08-26 22:25:53,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 22:25:53,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:25:53,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 301 [2023-08-26 22:25:53,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:25:53,276 INFO L124 PetriNetUnfolderBase]: 253/468 cut-off events. [2023-08-26 22:25:53,276 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2023-08-26 22:25:53,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1190 conditions, 468 events. 253/468 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1644 event pairs, 125 based on Foata normal form. 6/386 useless extension candidates. Maximal degree in co-relation 1176. Up to 430 conditions per place. [2023-08-26 22:25:53,280 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 40 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2023-08-26 22:25:53,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 249 flow [2023-08-26 22:25:53,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:25:53,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:25:53,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 483 transitions. [2023-08-26 22:25:53,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4011627906976744 [2023-08-26 22:25:53,283 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 483 transitions. [2023-08-26 22:25:53,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 483 transitions. [2023-08-26 22:25:53,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:25:53,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 483 transitions. [2023-08-26 22:25:53,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.75) internal successors, (483), 4 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 22:25:53,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 22:25:53,287 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 22:25:53,287 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 133 flow. Second operand 4 states and 483 transitions. [2023-08-26 22:25:53,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 249 flow [2023-08-26 22:25:53,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:25:53,291 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 142 flow [2023-08-26 22:25:53,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-26 22:25:53,292 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2023-08-26 22:25:53,295 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 142 flow [2023-08-26 22:25:53,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 22:25:53,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:25:53,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:25:53,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:25:53,296 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:25:53,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:25:53,296 INFO L85 PathProgramCache]: Analyzing trace with hash -177309611, now seen corresponding path program 1 times [2023-08-26 22:25:53,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:25:53,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751790863] [2023-08-26 22:25:53,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:53,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:25:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:53,359 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 22:25:53,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:25:53,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751790863] [2023-08-26 22:25:53,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751790863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:25:53,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:25:53,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:25:53,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277735574] [2023-08-26 22:25:53,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:25:53,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:25:53,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:25:53,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:25:53,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 22:25:53,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-26 22:25:53,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 22:25:53,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:25:53,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-26 22:25:53,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:25:53,506 INFO L124 PetriNetUnfolderBase]: 301/555 cut-off events. [2023-08-26 22:25:53,506 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2023-08-26 22:25:53,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 555 events. 301/555 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2258 event pairs, 52 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 1372. Up to 482 conditions per place. [2023-08-26 22:25:53,510 INFO L140 encePairwiseOnDemand]: 295/301 looper letters, 70 selfloop transitions, 3 changer transitions 1/75 dead transitions. [2023-08-26 22:25:53,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 75 transitions, 384 flow [2023-08-26 22:25:53,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:25:53,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:25:53,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 574 transitions. [2023-08-26 22:25:53,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2023-08-26 22:25:53,513 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 574 transitions. [2023-08-26 22:25:53,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 574 transitions. [2023-08-26 22:25:53,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:25:53,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 574 transitions. [2023-08-26 22:25:53,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 0 states have call successors, (0), 0 states 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 22:25:53,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 22:25:53,547 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 22:25:53,547 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 142 flow. Second operand 4 states and 574 transitions. [2023-08-26 22:25:53,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 75 transitions, 384 flow [2023-08-26 22:25:53,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 75 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:25:53,552 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 163 flow [2023-08-26 22:25:53,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-26 22:25:53,554 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2023-08-26 22:25:53,554 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 163 flow [2023-08-26 22:25:53,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 22:25:53,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:25:53,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:25:53,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:25:53,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:25:53,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:25:53,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1905790980, now seen corresponding path program 1 times [2023-08-26 22:25:53,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:25:53,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019025659] [2023-08-26 22:25:53,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:53,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:25:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:53,782 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 22:25:53,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:25:53,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019025659] [2023-08-26 22:25:53,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019025659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:25:53,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:25:53,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:25:53,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101955612] [2023-08-26 22:25:53,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:25:53,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:25:53,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:25:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:25:53,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:25:53,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 301 [2023-08-26 22:25:53,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 22:25:53,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:25:53,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 301 [2023-08-26 22:25:53,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:25:53,917 INFO L124 PetriNetUnfolderBase]: 387/731 cut-off events. [2023-08-26 22:25:53,918 INFO L125 PetriNetUnfolderBase]: For 396/397 co-relation queries the response was YES. [2023-08-26 22:25:53,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 731 events. 387/731 cut-off events. For 396/397 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3193 event pairs, 69 based on Foata normal form. 16/626 useless extension candidates. Maximal degree in co-relation 1956. Up to 528 conditions per place. [2023-08-26 22:25:53,925 INFO L140 encePairwiseOnDemand]: 295/301 looper letters, 58 selfloop transitions, 7 changer transitions 0/67 dead transitions. [2023-08-26 22:25:53,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 67 transitions, 379 flow [2023-08-26 22:25:53,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:25:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:25:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2023-08-26 22:25:53,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440753045404208 [2023-08-26 22:25:53,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2023-08-26 22:25:53,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2023-08-26 22:25:53,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:25:53,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2023-08-26 22:25:53,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 22:25:53,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 22:25:53,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 22:25:53,936 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 163 flow. Second operand 3 states and 401 transitions. [2023-08-26 22:25:53,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 67 transitions, 379 flow [2023-08-26 22:25:53,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:25:53,940 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 212 flow [2023-08-26 22:25:53,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2023-08-26 22:25:53,941 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2023-08-26 22:25:53,941 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 212 flow [2023-08-26 22:25:53,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 22:25:53,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:25:53,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:25:53,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:25:53,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:25:53,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:25:53,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1712181160, now seen corresponding path program 2 times [2023-08-26 22:25:53,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:25:53,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487778491] [2023-08-26 22:25:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:53,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:25:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:54,145 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 22:25:54,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:25:54,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487778491] [2023-08-26 22:25:54,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487778491] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:25:54,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:25:54,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:25:54,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398322213] [2023-08-26 22:25:54,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:25:54,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:25:54,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:25:54,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:25:54,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:25:54,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 301 [2023-08-26 22:25:54,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 22:25:54,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:25:54,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 301 [2023-08-26 22:25:54,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:25:54,204 INFO L124 PetriNetUnfolderBase]: 75/171 cut-off events. [2023-08-26 22:25:54,204 INFO L125 PetriNetUnfolderBase]: For 177/189 co-relation queries the response was YES. [2023-08-26 22:25:54,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 171 events. 75/171 cut-off events. For 177/189 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 563 event pairs, 4 based on Foata normal form. 14/150 useless extension candidates. Maximal degree in co-relation 485. Up to 126 conditions per place. [2023-08-26 22:25:54,205 INFO L140 encePairwiseOnDemand]: 297/301 looper letters, 34 selfloop transitions, 3 changer transitions 2/41 dead transitions. [2023-08-26 22:25:54,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 255 flow [2023-08-26 22:25:54,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:25:54,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:25:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-08-26 22:25:54,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130675526024363 [2023-08-26 22:25:54,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-08-26 22:25:54,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-08-26 22:25:54,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:25:54,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-08-26 22:25:54,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 22:25:54,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 22:25:54,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states 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 22:25:54,210 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 212 flow. Second operand 3 states and 373 transitions. [2023-08-26 22:25:54,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 255 flow [2023-08-26 22:25:54,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 231 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-26 22:25:54,211 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 138 flow [2023-08-26 22:25:54,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-08-26 22:25:54,212 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2023-08-26 22:25:54,212 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 138 flow [2023-08-26 22:25:54,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 22:25:54,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:25:54,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:25:54,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:25:54,213 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:25:54,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:25:54,213 INFO L85 PathProgramCache]: Analyzing trace with hash 582650950, now seen corresponding path program 1 times [2023-08-26 22:25:54,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:25:54,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138594619] [2023-08-26 22:25:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:54,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:25:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:54,478 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 22:25:54,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:25:54,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138594619] [2023-08-26 22:25:54,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138594619] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:25:54,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:25:54,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 22:25:54,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721622920] [2023-08-26 22:25:54,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:25:54,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 22:25:54,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:25:54,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 22:25:54,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-26 22:25:54,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 301 [2023-08-26 22:25:54,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 138 flow. Second operand has 8 states, 8 states have (on average 100.375) internal successors, (803), 8 states have internal predecessors, (803), 0 states have call successors, (0), 0 states 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 22:25:54,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:25:54,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 301 [2023-08-26 22:25:54,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:25:54,625 INFO L124 PetriNetUnfolderBase]: 85/200 cut-off events. [2023-08-26 22:25:54,626 INFO L125 PetriNetUnfolderBase]: For 149/161 co-relation queries the response was YES. [2023-08-26 22:25:54,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 200 events. 85/200 cut-off events. For 149/161 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 684 event pairs, 34 based on Foata normal form. 5/168 useless extension candidates. Maximal degree in co-relation 562. Up to 155 conditions per place. [2023-08-26 22:25:54,627 INFO L140 encePairwiseOnDemand]: 289/301 looper letters, 43 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2023-08-26 22:25:54,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 296 flow [2023-08-26 22:25:54,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:25:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:25:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 748 transitions. [2023-08-26 22:25:54,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35500711912672045 [2023-08-26 22:25:54,630 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 748 transitions. [2023-08-26 22:25:54,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 748 transitions. [2023-08-26 22:25:54,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:25:54,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 748 transitions. [2023-08-26 22:25:54,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 22:25:54,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 301.0) internal successors, (2408), 8 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states 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 22:25:54,635 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 301.0) internal successors, (2408), 8 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states 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 22:25:54,635 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 138 flow. Second operand 7 states and 748 transitions. [2023-08-26 22:25:54,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 296 flow [2023-08-26 22:25:54,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 278 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-26 22:25:54,637 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 180 flow [2023-08-26 22:25:54,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=180, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-08-26 22:25:54,638 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2023-08-26 22:25:54,638 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 180 flow [2023-08-26 22:25:54,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 100.375) internal successors, (803), 8 states have internal predecessors, (803), 0 states have call successors, (0), 0 states 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 22:25:54,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:25:54,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:25:54,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:25:54,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:25:54,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:25:54,639 INFO L85 PathProgramCache]: Analyzing trace with hash 882307724, now seen corresponding path program 1 times [2023-08-26 22:25:54,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:25:54,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261257844] [2023-08-26 22:25:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:54,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:25:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:54,690 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 22:25:54,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:25:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261257844] [2023-08-26 22:25:54,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261257844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:25:54,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:25:54,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:25:54,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542997488] [2023-08-26 22:25:54,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:25:54,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:25:54,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:25:54,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:25:54,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 22:25:54,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 301 [2023-08-26 22:25:54,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states 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 22:25:54,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:25:54,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 301 [2023-08-26 22:25:54,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:25:54,817 INFO L124 PetriNetUnfolderBase]: 102/231 cut-off events. [2023-08-26 22:25:54,817 INFO L125 PetriNetUnfolderBase]: For 204/219 co-relation queries the response was YES. [2023-08-26 22:25:54,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 231 events. 102/231 cut-off events. For 204/219 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 817 event pairs, 8 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 685. Up to 97 conditions per place. [2023-08-26 22:25:54,819 INFO L140 encePairwiseOnDemand]: 293/301 looper letters, 60 selfloop transitions, 10 changer transitions 0/72 dead transitions. [2023-08-26 22:25:54,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 469 flow [2023-08-26 22:25:54,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 22:25:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 22:25:54,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 610 transitions. [2023-08-26 22:25:54,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053156146179402 [2023-08-26 22:25:54,822 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 610 transitions. [2023-08-26 22:25:54,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 610 transitions. [2023-08-26 22:25:54,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:25:54,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 610 transitions. [2023-08-26 22:25:54,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 22:25:54,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 301.0) internal successors, (1806), 6 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states 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 22:25:54,828 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 301.0) internal successors, (1806), 6 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states 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 22:25:54,828 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 180 flow. Second operand 5 states and 610 transitions. [2023-08-26 22:25:54,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 469 flow [2023-08-26 22:25:54,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 72 transitions, 458 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 22:25:54,831 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 231 flow [2023-08-26 22:25:54,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-08-26 22:25:54,834 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2023-08-26 22:25:54,834 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 231 flow [2023-08-26 22:25:54,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states 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 22:25:54,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:25:54,835 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:25:54,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:25:54,835 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:25:54,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:25:54,835 INFO L85 PathProgramCache]: Analyzing trace with hash 873519923, now seen corresponding path program 1 times [2023-08-26 22:25:54,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:25:54,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341699927] [2023-08-26 22:25:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:54,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:25:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:25:54,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:25:54,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341699927] [2023-08-26 22:25:54,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341699927] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:25:54,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663924102] [2023-08-26 22:25:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:54,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:25:54,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:25:54,913 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 22:25:54,942 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 22:25:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:55,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 22:25:55,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:25:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:25:55,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:25:55,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663924102] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:25:55,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:25:55,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-08-26 22:25:55,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783928945] [2023-08-26 22:25:55,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:25:55,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:25:55,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:25:55,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:25:55,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-26 22:25:55,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-26 22:25:55,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 128.5) internal successors, (771), 6 states have internal predecessors, (771), 0 states have call successors, (0), 0 states 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 22:25:55,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:25:55,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-26 22:25:55,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:25:55,239 INFO L124 PetriNetUnfolderBase]: 102/229 cut-off events. [2023-08-26 22:25:55,239 INFO L125 PetriNetUnfolderBase]: For 327/327 co-relation queries the response was YES. [2023-08-26 22:25:55,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 229 events. 102/229 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 856 event pairs, 15 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 775. Up to 85 conditions per place. [2023-08-26 22:25:55,241 INFO L140 encePairwiseOnDemand]: 295/301 looper letters, 95 selfloop transitions, 7 changer transitions 0/103 dead transitions. [2023-08-26 22:25:55,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 103 transitions, 745 flow [2023-08-26 22:25:55,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:25:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:25:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 833 transitions. [2023-08-26 22:25:55,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2023-08-26 22:25:55,244 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 833 transitions. [2023-08-26 22:25:55,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 833 transitions. [2023-08-26 22:25:55,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:25:55,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 833 transitions. [2023-08-26 22:25:55,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.83333333333334) internal successors, (833), 6 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:25:55,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 301.0) internal successors, (2107), 7 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states 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 22:25:55,250 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 301.0) internal successors, (2107), 7 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states 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 22:25:55,250 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 231 flow. Second operand 6 states and 833 transitions. [2023-08-26 22:25:55,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 103 transitions, 745 flow [2023-08-26 22:25:55,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 103 transitions, 735 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-26 22:25:55,253 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 237 flow [2023-08-26 22:25:55,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2023-08-26 22:25:55,254 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2023-08-26 22:25:55,254 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 237 flow [2023-08-26 22:25:55,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.5) internal successors, (771), 6 states have internal predecessors, (771), 0 states have call successors, (0), 0 states 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 22:25:55,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:25:55,255 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:25:55,263 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 22:25:55,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:25:55,460 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:25:55,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:25:55,460 INFO L85 PathProgramCache]: Analyzing trace with hash 873520124, now seen corresponding path program 1 times [2023-08-26 22:25:55,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:25:55,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844149772] [2023-08-26 22:25:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:55,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:25:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:25:55,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:25:55,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844149772] [2023-08-26 22:25:55,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844149772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:25:55,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664596856] [2023-08-26 22:25:55,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:55,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:25:55,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:25:55,524 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 22:25:55,540 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 22:25:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:55,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 22:25:55,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:25:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:25:55,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:25:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:25:55,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664596856] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:25:55,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:25:55,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-26 22:25:55,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104765480] [2023-08-26 22:25:55,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:25:55,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 22:25:55,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:25:55,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 22:25:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-26 22:25:55,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-26 22:25:55,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 237 flow. Second operand has 12 states, 12 states have (on average 128.91666666666666) internal successors, (1547), 12 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states 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 22:25:55,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:25:55,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-26 22:25:55,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:25:56,014 INFO L124 PetriNetUnfolderBase]: 238/509 cut-off events. [2023-08-26 22:25:56,014 INFO L125 PetriNetUnfolderBase]: For 924/924 co-relation queries the response was YES. [2023-08-26 22:25:56,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1920 conditions, 509 events. 238/509 cut-off events. For 924/924 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2034 event pairs, 16 based on Foata normal form. 51/549 useless extension candidates. Maximal degree in co-relation 1896. Up to 237 conditions per place. [2023-08-26 22:25:56,018 INFO L140 encePairwiseOnDemand]: 295/301 looper letters, 194 selfloop transitions, 15 changer transitions 0/210 dead transitions. [2023-08-26 22:25:56,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 210 transitions, 1524 flow [2023-08-26 22:25:56,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 22:25:56,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 22:25:56,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1425 transitions. [2023-08-26 22:25:56,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473421926910299 [2023-08-26 22:25:56,022 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1425 transitions. [2023-08-26 22:25:56,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1425 transitions. [2023-08-26 22:25:56,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:25:56,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1425 transitions. [2023-08-26 22:25:56,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.5) internal successors, (1425), 10 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 22:25:56,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 301.0) internal successors, (3311), 11 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states 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 22:25:56,030 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 301.0) internal successors, (3311), 11 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states 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 22:25:56,030 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 237 flow. Second operand 10 states and 1425 transitions. [2023-08-26 22:25:56,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 210 transitions, 1524 flow [2023-08-26 22:25:56,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 210 transitions, 1497 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-26 22:25:56,037 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 335 flow [2023-08-26 22:25:56,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=335, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2023-08-26 22:25:56,038 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-08-26 22:25:56,038 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 335 flow [2023-08-26 22:25:56,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 128.91666666666666) internal successors, (1547), 12 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states 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 22:25:56,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:25:56,039 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:25:56,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-26 22:25:56,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-26 22:25:56,244 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:25:56,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:25:56,244 INFO L85 PathProgramCache]: Analyzing trace with hash -171322200, now seen corresponding path program 1 times [2023-08-26 22:25:56,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:25:56,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451229595] [2023-08-26 22:25:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:56,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:25:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:56,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:25:56,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:25:56,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451229595] [2023-08-26 22:25:56,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451229595] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:25:56,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938242139] [2023-08-26 22:25:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:56,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:25:56,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:25:56,751 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 22:25:56,780 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 22:25:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:56,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-26 22:25:56,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:25:56,897 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-26 22:25:56,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 22:25:56,903 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 22:25:57,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 22:25:57,129 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 22:25:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:25:57,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:25:57,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938242139] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:25:57,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:25:57,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2023-08-26 22:25:57,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339950923] [2023-08-26 22:25:57,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:25:57,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 22:25:57,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:25:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 22:25:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-08-26 22:25:57,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 301 [2023-08-26 22:25:57,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 335 flow. Second operand has 10 states, 10 states have (on average 100.7) internal successors, (1007), 10 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states 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 22:25:57,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:25:57,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 301 [2023-08-26 22:25:57,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:25:57,478 INFO L124 PetriNetUnfolderBase]: 244/539 cut-off events. [2023-08-26 22:25:57,478 INFO L125 PetriNetUnfolderBase]: For 1340/1340 co-relation queries the response was YES. [2023-08-26 22:25:57,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2162 conditions, 539 events. 244/539 cut-off events. For 1340/1340 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2047 event pairs, 58 based on Foata normal form. 21/549 useless extension candidates. Maximal degree in co-relation 2136. Up to 368 conditions per place. [2023-08-26 22:25:57,483 INFO L140 encePairwiseOnDemand]: 291/301 looper letters, 84 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2023-08-26 22:25:57,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 96 transitions, 784 flow [2023-08-26 22:25:57,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 22:25:57,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 22:25:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1059 transitions. [2023-08-26 22:25:57,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3518272425249169 [2023-08-26 22:25:57,486 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1059 transitions. [2023-08-26 22:25:57,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1059 transitions. [2023-08-26 22:25:57,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:25:57,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1059 transitions. [2023-08-26 22:25:57,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.9) internal successors, (1059), 10 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states 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 22:25:57,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 301.0) internal successors, (3311), 11 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states 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 22:25:57,493 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 301.0) internal successors, (3311), 11 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states 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 22:25:57,493 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 335 flow. Second operand 10 states and 1059 transitions. [2023-08-26 22:25:57,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 96 transitions, 784 flow [2023-08-26 22:25:57,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 96 transitions, 757 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-26 22:25:57,498 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 391 flow [2023-08-26 22:25:57,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=391, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2023-08-26 22:25:57,499 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2023-08-26 22:25:57,499 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 391 flow [2023-08-26 22:25:57,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 100.7) internal successors, (1007), 10 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states 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 22:25:57,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:25:57,499 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:25:57,507 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 22:25:57,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:25:57,705 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:25:57,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:25:57,706 INFO L85 PathProgramCache]: Analyzing trace with hash 48542092, now seen corresponding path program 1 times [2023-08-26 22:25:57,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:25:57,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787802427] [2023-08-26 22:25:57,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:57,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:25:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:25:58,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:25:58,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787802427] [2023-08-26 22:25:58,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787802427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:25:58,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658660437] [2023-08-26 22:25:58,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:25:58,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:25:58,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:25:58,438 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 22:25:58,455 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 22:25:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:25:58,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-26 22:25:58,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:25:58,563 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-26 22:25:58,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 22:25:58,569 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 22:25:58,669 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-08-26 22:25:58,824 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-08-26 22:25:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:25:58,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:25:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:25:59,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658660437] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 22:25:59,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:25:59,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 8] total 30 [2023-08-26 22:25:59,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579753744] [2023-08-26 22:25:59,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:25:59,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 22:25:59,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:25:59,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 22:25:59,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2023-08-26 22:25:59,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 301 [2023-08-26 22:25:59,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 391 flow. Second operand has 12 states, 12 states have (on average 90.5) internal successors, (1086), 12 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 22:25:59,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:25:59,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 301 [2023-08-26 22:25:59,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:26:00,230 INFO L124 PetriNetUnfolderBase]: 551/1183 cut-off events. [2023-08-26 22:26:00,230 INFO L125 PetriNetUnfolderBase]: For 3496/3496 co-relation queries the response was YES. [2023-08-26 22:26:00,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4818 conditions, 1183 events. 551/1183 cut-off events. For 3496/3496 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6014 event pairs, 73 based on Foata normal form. 90/1273 useless extension candidates. Maximal degree in co-relation 4787. Up to 318 conditions per place. [2023-08-26 22:26:00,240 INFO L140 encePairwiseOnDemand]: 285/301 looper letters, 206 selfloop transitions, 50 changer transitions 51/308 dead transitions. [2023-08-26 22:26:00,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 308 transitions, 2634 flow [2023-08-26 22:26:00,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 22:26:00,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 22:26:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2223 transitions. [2023-08-26 22:26:00,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3211035678174202 [2023-08-26 22:26:00,247 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2223 transitions. [2023-08-26 22:26:00,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2223 transitions. [2023-08-26 22:26:00,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:26:00,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2223 transitions. [2023-08-26 22:26:00,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 96.65217391304348) internal successors, (2223), 23 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states 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 22:26:00,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 301.0) internal successors, (7224), 24 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states 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 22:26:00,267 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 301.0) internal successors, (7224), 24 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states 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 22:26:00,267 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 391 flow. Second operand 23 states and 2223 transitions. [2023-08-26 22:26:00,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 308 transitions, 2634 flow [2023-08-26 22:26:00,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 308 transitions, 2602 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-26 22:26:00,283 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 841 flow [2023-08-26 22:26:00,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=841, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2023-08-26 22:26:00,284 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 69 predicate places. [2023-08-26 22:26:00,285 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 841 flow [2023-08-26 22:26:00,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 90.5) internal successors, (1086), 12 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 22:26:00,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:26:00,286 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:26:00,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-26 22:26:00,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:26:00,491 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:26:00,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:26:00,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1544275307, now seen corresponding path program 1 times [2023-08-26 22:26:00,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:26:00,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883684949] [2023-08-26 22:26:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:00,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:26:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:00,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:26:00,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883684949] [2023-08-26 22:26:00,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883684949] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:26:00,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727118980] [2023-08-26 22:26:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:00,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:26:00,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:26:00,781 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:26:00,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 22:26:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:00,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-26 22:26:00,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:26:01,019 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 22:26:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:01,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:26:01,173 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-26 22:26:01,174 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 48 treesize of output 36 [2023-08-26 22:26:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:01,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727118980] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 22:26:01,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:26:01,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 6] total 20 [2023-08-26 22:26:01,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924977738] [2023-08-26 22:26:01,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:26:01,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:26:01,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:26:01,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:26:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2023-08-26 22:26:01,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 301 [2023-08-26 22:26:01,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 841 flow. Second operand has 7 states, 7 states have (on average 101.71428571428571) internal successors, (712), 7 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 22:26:01,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:26:01,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 301 [2023-08-26 22:26:01,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:26:01,575 INFO L124 PetriNetUnfolderBase]: 541/1151 cut-off events. [2023-08-26 22:26:01,575 INFO L125 PetriNetUnfolderBase]: For 5069/5069 co-relation queries the response was YES. [2023-08-26 22:26:01,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5465 conditions, 1151 events. 541/1151 cut-off events. For 5069/5069 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5687 event pairs, 120 based on Foata normal form. 16/1167 useless extension candidates. Maximal degree in co-relation 5425. Up to 909 conditions per place. [2023-08-26 22:26:01,584 INFO L140 encePairwiseOnDemand]: 291/301 looper letters, 108 selfloop transitions, 21 changer transitions 0/130 dead transitions. [2023-08-26 22:26:01,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 130 transitions, 1301 flow [2023-08-26 22:26:01,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 22:26:01,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 22:26:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 839 transitions. [2023-08-26 22:26:01,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.348421926910299 [2023-08-26 22:26:01,587 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 839 transitions. [2023-08-26 22:26:01,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 839 transitions. [2023-08-26 22:26:01,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:26:01,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 839 transitions. [2023-08-26 22:26:01,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states 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 22:26:01,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 301.0) internal successors, (2709), 9 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states 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 22:26:01,593 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 301.0) internal successors, (2709), 9 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states 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 22:26:01,593 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 841 flow. Second operand 8 states and 839 transitions. [2023-08-26 22:26:01,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 130 transitions, 1301 flow [2023-08-26 22:26:01,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 130 transitions, 1203 flow, removed 49 selfloop flow, removed 0 redundant places. [2023-08-26 22:26:01,612 INFO L231 Difference]: Finished difference. Result has 107 places, 93 transitions, 732 flow [2023-08-26 22:26:01,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=732, PETRI_PLACES=107, PETRI_TRANSITIONS=93} [2023-08-26 22:26:01,612 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 75 predicate places. [2023-08-26 22:26:01,612 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 732 flow [2023-08-26 22:26:01,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.71428571428571) internal successors, (712), 7 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 22:26:01,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:26:01,613 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:26:01,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-26 22:26:01,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-26 22:26:01,818 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:26:01,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:26:01,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1431954735, now seen corresponding path program 1 times [2023-08-26 22:26:01,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:26:01,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217615293] [2023-08-26 22:26:01,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:01,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:26:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:26:02,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:26:02,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217615293] [2023-08-26 22:26:02,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217615293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:26:02,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:26:02,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 22:26:02,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119778394] [2023-08-26 22:26:02,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:26:02,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 22:26:02,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:26:02,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 22:26:02,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-26 22:26:02,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 301 [2023-08-26 22:26:02,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 93 transitions, 732 flow. Second operand has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 0 states 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 22:26:02,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:26:02,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 301 [2023-08-26 22:26:02,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:26:02,403 INFO L124 PetriNetUnfolderBase]: 668/1422 cut-off events. [2023-08-26 22:26:02,403 INFO L125 PetriNetUnfolderBase]: For 5161/5161 co-relation queries the response was YES. [2023-08-26 22:26:02,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6646 conditions, 1422 events. 668/1422 cut-off events. For 5161/5161 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7459 event pairs, 10 based on Foata normal form. 16/1438 useless extension candidates. Maximal degree in co-relation 6603. Up to 793 conditions per place. [2023-08-26 22:26:02,416 INFO L140 encePairwiseOnDemand]: 293/301 looper letters, 115 selfloop transitions, 33 changer transitions 0/149 dead transitions. [2023-08-26 22:26:02,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 149 transitions, 1447 flow [2023-08-26 22:26:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 22:26:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 22:26:02,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1049 transitions. [2023-08-26 22:26:02,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34850498338870434 [2023-08-26 22:26:02,419 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1049 transitions. [2023-08-26 22:26:02,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1049 transitions. [2023-08-26 22:26:02,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:26:02,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1049 transitions. [2023-08-26 22:26:02,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 104.9) internal successors, (1049), 10 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states 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 22:26:02,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 301.0) internal successors, (3311), 11 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states 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 22:26:02,427 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 301.0) internal successors, (3311), 11 states have internal predecessors, (3311), 0 states have call successors, (0), 0 states 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 22:26:02,427 INFO L175 Difference]: Start difference. First operand has 107 places, 93 transitions, 732 flow. Second operand 10 states and 1049 transitions. [2023-08-26 22:26:02,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 149 transitions, 1447 flow [2023-08-26 22:26:02,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 149 transitions, 1399 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-26 22:26:02,448 INFO L231 Difference]: Finished difference. Result has 111 places, 101 transitions, 862 flow [2023-08-26 22:26:02,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=862, PETRI_PLACES=111, PETRI_TRANSITIONS=101} [2023-08-26 22:26:02,449 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 79 predicate places. [2023-08-26 22:26:02,449 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 101 transitions, 862 flow [2023-08-26 22:26:02,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 0 states 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 22:26:02,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:26:02,450 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:26:02,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 22:26:02,450 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:26:02,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:26:02,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1983408406, now seen corresponding path program 1 times [2023-08-26 22:26:02,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:26:02,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077832865] [2023-08-26 22:26:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:02,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:26:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:03,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:26:03,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077832865] [2023-08-26 22:26:03,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077832865] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:26:03,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581547807] [2023-08-26 22:26:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:03,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:26:03,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:26:03,316 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:26:03,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 22:26:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:03,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-26 22:26:03,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:26:03,670 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 22:26:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-26 22:26:03,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:26:03,981 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-26 22:26:03,981 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 71 treesize of output 55 [2023-08-26 22:26:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-26 22:26:04,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581547807] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:26:04,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:26:04,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 31 [2023-08-26 22:26:04,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426262583] [2023-08-26 22:26:04,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:26:04,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-26 22:26:04,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:26:04,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-26 22:26:04,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2023-08-26 22:26:04,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 301 [2023-08-26 22:26:04,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 101 transitions, 862 flow. Second operand has 31 states, 31 states have (on average 91.0) internal successors, (2821), 31 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states 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 22:26:04,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:26:04,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 301 [2023-08-26 22:26:04,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:26:05,191 INFO L124 PetriNetUnfolderBase]: 525/1147 cut-off events. [2023-08-26 22:26:05,191 INFO L125 PetriNetUnfolderBase]: For 4758/4758 co-relation queries the response was YES. [2023-08-26 22:26:05,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5338 conditions, 1147 events. 525/1147 cut-off events. For 4758/4758 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5878 event pairs, 53 based on Foata normal form. 83/1230 useless extension candidates. Maximal degree in co-relation 5295. Up to 290 conditions per place. [2023-08-26 22:26:05,201 INFO L140 encePairwiseOnDemand]: 285/301 looper letters, 150 selfloop transitions, 43 changer transitions 8/202 dead transitions. [2023-08-26 22:26:05,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 202 transitions, 1941 flow [2023-08-26 22:26:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 22:26:05,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 22:26:05,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2167 transitions. [2023-08-26 22:26:05,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31301458905098944 [2023-08-26 22:26:05,206 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2167 transitions. [2023-08-26 22:26:05,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2167 transitions. [2023-08-26 22:26:05,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:26:05,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2167 transitions. [2023-08-26 22:26:05,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 94.21739130434783) internal successors, (2167), 23 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states 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 22:26:05,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 301.0) internal successors, (7224), 24 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states 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 22:26:05,219 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 301.0) internal successors, (7224), 24 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states 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 22:26:05,220 INFO L175 Difference]: Start difference. First operand has 111 places, 101 transitions, 862 flow. Second operand 23 states and 2167 transitions. [2023-08-26 22:26:05,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 202 transitions, 1941 flow [2023-08-26 22:26:05,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 202 transitions, 1855 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-08-26 22:26:05,238 INFO L231 Difference]: Finished difference. Result has 125 places, 94 transitions, 874 flow [2023-08-26 22:26:05,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=874, PETRI_PLACES=125, PETRI_TRANSITIONS=94} [2023-08-26 22:26:05,239 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 93 predicate places. [2023-08-26 22:26:05,239 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 94 transitions, 874 flow [2023-08-26 22:26:05,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 91.0) internal successors, (2821), 31 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states 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 22:26:05,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:26:05,240 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:26:05,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-26 22:26:05,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 22:26:05,445 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:26:05,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:26:05,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1414248570, now seen corresponding path program 2 times [2023-08-26 22:26:05,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:26:05,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765115017] [2023-08-26 22:26:05,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:05,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:26:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:06,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:26:06,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765115017] [2023-08-26 22:26:06,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765115017] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:26:06,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349276023] [2023-08-26 22:26:06,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:26:06,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:26:06,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:26:06,209 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:26:06,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 22:26:06,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 22:26:06,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:26:06,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-26 22:26:06,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:26:06,484 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 22:26:06,597 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 22:26:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:06,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:26:06,859 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-26 22:26:06,860 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 48 treesize of output 36 [2023-08-26 22:26:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:06,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349276023] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:26:06,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:26:06,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 33 [2023-08-26 22:26:06,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856141963] [2023-08-26 22:26:06,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:26:06,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-26 22:26:06,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:26:06,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-26 22:26:06,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2023-08-26 22:26:06,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 301 [2023-08-26 22:26:06,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 94 transitions, 874 flow. Second operand has 33 states, 33 states have (on average 95.12121212121212) internal successors, (3139), 33 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states 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 22:26:06,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:26:06,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 301 [2023-08-26 22:26:06,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:26:07,864 INFO L124 PetriNetUnfolderBase]: 352/812 cut-off events. [2023-08-26 22:26:07,864 INFO L125 PetriNetUnfolderBase]: For 4046/4046 co-relation queries the response was YES. [2023-08-26 22:26:07,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4110 conditions, 812 events. 352/812 cut-off events. For 4046/4046 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3242 event pairs, 65 based on Foata normal form. 30/842 useless extension candidates. Maximal degree in co-relation 4064. Up to 299 conditions per place. [2023-08-26 22:26:07,871 INFO L140 encePairwiseOnDemand]: 290/301 looper letters, 112 selfloop transitions, 38 changer transitions 9/160 dead transitions. [2023-08-26 22:26:07,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 160 transitions, 1621 flow [2023-08-26 22:26:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-26 22:26:07,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-26 22:26:07,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1856 transitions. [2023-08-26 22:26:07,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32453226088477005 [2023-08-26 22:26:07,875 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1856 transitions. [2023-08-26 22:26:07,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1856 transitions. [2023-08-26 22:26:07,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:26:07,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1856 transitions. [2023-08-26 22:26:07,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.6842105263158) internal successors, (1856), 19 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states 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 22:26:07,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 301.0) internal successors, (6020), 20 states have internal predecessors, (6020), 0 states have call successors, (0), 0 states 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 22:26:07,887 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 301.0) internal successors, (6020), 20 states have internal predecessors, (6020), 0 states have call successors, (0), 0 states 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 22:26:07,887 INFO L175 Difference]: Start difference. First operand has 125 places, 94 transitions, 874 flow. Second operand 19 states and 1856 transitions. [2023-08-26 22:26:07,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 160 transitions, 1621 flow [2023-08-26 22:26:07,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 160 transitions, 1503 flow, removed 28 selfloop flow, removed 17 redundant places. [2023-08-26 22:26:07,903 INFO L231 Difference]: Finished difference. Result has 116 places, 84 transitions, 782 flow [2023-08-26 22:26:07,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=782, PETRI_PLACES=116, PETRI_TRANSITIONS=84} [2023-08-26 22:26:07,904 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 84 predicate places. [2023-08-26 22:26:07,904 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 84 transitions, 782 flow [2023-08-26 22:26:07,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 95.12121212121212) internal successors, (3139), 33 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states 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 22:26:07,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:26:07,905 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:26:07,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 22:26:08,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:26:08,111 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:26:08,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:26:08,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1305870829, now seen corresponding path program 1 times [2023-08-26 22:26:08,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:26:08,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48269561] [2023-08-26 22:26:08,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:08,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:26:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-26 22:26:08,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:26:08,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48269561] [2023-08-26 22:26:08,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48269561] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:26:08,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716204135] [2023-08-26 22:26:08,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:08,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:26:08,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:26:08,389 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:26:08,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 22:26:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:08,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-26 22:26:08,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:26:08,601 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 22:26:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-26 22:26:08,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:26:08,668 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-26 22:26:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-26 22:26:08,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716204135] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:26:08,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:26:08,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2023-08-26 22:26:08,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267290287] [2023-08-26 22:26:08,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:26:08,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 22:26:08,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:26:08,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 22:26:08,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-26 22:26:08,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 301 [2023-08-26 22:26:08,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 84 transitions, 782 flow. Second operand has 15 states, 15 states have (on average 113.2) internal successors, (1698), 15 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states 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 22:26:08,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:26:08,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 301 [2023-08-26 22:26:08,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:26:08,875 INFO L124 PetriNetUnfolderBase]: 344/795 cut-off events. [2023-08-26 22:26:08,875 INFO L125 PetriNetUnfolderBase]: For 3744/3744 co-relation queries the response was YES. [2023-08-26 22:26:08,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3964 conditions, 795 events. 344/795 cut-off events. For 3744/3744 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3145 event pairs, 90 based on Foata normal form. 9/804 useless extension candidates. Maximal degree in co-relation 3924. Up to 753 conditions per place. [2023-08-26 22:26:08,881 INFO L140 encePairwiseOnDemand]: 298/301 looper letters, 90 selfloop transitions, 4 changer transitions 6/101 dead transitions. [2023-08-26 22:26:08,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 101 transitions, 1099 flow [2023-08-26 22:26:08,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:26:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:26:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 470 transitions. [2023-08-26 22:26:08,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903654485049834 [2023-08-26 22:26:08,883 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 470 transitions. [2023-08-26 22:26:08,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 470 transitions. [2023-08-26 22:26:08,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:26:08,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 470 transitions. [2023-08-26 22:26:08,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 0 states 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 22:26:08,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 22:26:08,886 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 301.0) internal successors, (1505), 5 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states 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 22:26:08,886 INFO L175 Difference]: Start difference. First operand has 116 places, 84 transitions, 782 flow. Second operand 4 states and 470 transitions. [2023-08-26 22:26:08,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 101 transitions, 1099 flow [2023-08-26 22:26:08,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 101 transitions, 1006 flow, removed 20 selfloop flow, removed 12 redundant places. [2023-08-26 22:26:08,898 INFO L231 Difference]: Finished difference. Result has 105 places, 80 transitions, 672 flow [2023-08-26 22:26:08,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=672, PETRI_PLACES=105, PETRI_TRANSITIONS=80} [2023-08-26 22:26:08,898 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 73 predicate places. [2023-08-26 22:26:08,899 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 80 transitions, 672 flow [2023-08-26 22:26:08,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 113.2) internal successors, (1698), 15 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states 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 22:26:08,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:26:08,899 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2023-08-26 22:26:08,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 22:26:09,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-26 22:26:09,112 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:26:09,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:26:09,113 INFO L85 PathProgramCache]: Analyzing trace with hash 290749534, now seen corresponding path program 1 times [2023-08-26 22:26:09,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:26:09,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524526808] [2023-08-26 22:26:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:09,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:26:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:09,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:26:09,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524526808] [2023-08-26 22:26:09,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524526808] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:26:09,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511653744] [2023-08-26 22:26:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:09,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:26:09,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:26:09,236 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:26:09,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 22:26:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:09,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 22:26:09,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:26:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:09,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:26:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:09,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511653744] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:26:09,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:26:09,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-26 22:26:09,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405362087] [2023-08-26 22:26:09,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:26:09,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 22:26:09,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:26:09,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 22:26:09,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-08-26 22:26:09,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-26 22:26:09,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 80 transitions, 672 flow. Second operand has 24 states, 24 states have (on average 128.625) internal successors, (3087), 24 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states 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 22:26:09,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:26:09,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-26 22:26:09,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:26:10,248 INFO L124 PetriNetUnfolderBase]: 548/1576 cut-off events. [2023-08-26 22:26:10,248 INFO L125 PetriNetUnfolderBase]: For 10552/10552 co-relation queries the response was YES. [2023-08-26 22:26:10,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7913 conditions, 1576 events. 548/1576 cut-off events. For 10552/10552 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7580 event pairs, 33 based on Foata normal form. 228/1804 useless extension candidates. Maximal degree in co-relation 7874. Up to 385 conditions per place. [2023-08-26 22:26:10,267 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 558 selfloop transitions, 29 changer transitions 110/698 dead transitions. [2023-08-26 22:26:10,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 698 transitions, 7498 flow [2023-08-26 22:26:10,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 22:26:10,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 22:26:10,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3046 transitions. [2023-08-26 22:26:10,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599818785865297 [2023-08-26 22:26:10,274 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3046 transitions. [2023-08-26 22:26:10,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3046 transitions. [2023-08-26 22:26:10,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:26:10,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3046 transitions. [2023-08-26 22:26:10,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 138.45454545454547) internal successors, (3046), 22 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states 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 22:26:10,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 301.0) internal successors, (6923), 23 states have internal predecessors, (6923), 0 states have call successors, (0), 0 states 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 22:26:10,290 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 301.0) internal successors, (6923), 23 states have internal predecessors, (6923), 0 states have call successors, (0), 0 states 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 22:26:10,290 INFO L175 Difference]: Start difference. First operand has 105 places, 80 transitions, 672 flow. Second operand 22 states and 3046 transitions. [2023-08-26 22:26:10,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 698 transitions, 7498 flow [2023-08-26 22:26:10,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 698 transitions, 7476 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:26:10,319 INFO L231 Difference]: Finished difference. Result has 129 places, 98 transitions, 893 flow [2023-08-26 22:26:10,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=893, PETRI_PLACES=129, PETRI_TRANSITIONS=98} [2023-08-26 22:26:10,319 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 97 predicate places. [2023-08-26 22:26:10,319 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 98 transitions, 893 flow [2023-08-26 22:26:10,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 128.625) internal successors, (3087), 24 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states 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 22:26:10,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:26:10,320 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-26 22:26:10,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 22:26:10,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 22:26:10,526 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:26:10,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:26:10,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1400309654, now seen corresponding path program 2 times [2023-08-26 22:26:10,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:26:10,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444782942] [2023-08-26 22:26:10,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:10,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:26:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:10,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:26:10,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444782942] [2023-08-26 22:26:10,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444782942] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:26:10,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028223485] [2023-08-26 22:26:10,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:26:10,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:26:10,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:26:10,935 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:26:10,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 22:26:11,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 22:26:11,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:26:11,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-26 22:26:11,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:26:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:11,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:26:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:11,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028223485] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:26:11,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:26:11,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2023-08-26 22:26:11,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730876650] [2023-08-26 22:26:11,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:26:11,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-26 22:26:11,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:26:11,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-26 22:26:11,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2023-08-26 22:26:11,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-26 22:26:11,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 98 transitions, 893 flow. Second operand has 48 states, 48 states have (on average 128.3125) internal successors, (6159), 48 states have internal predecessors, (6159), 0 states have call successors, (0), 0 states 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 22:26:11,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:26:11,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-26 22:26:11,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:26:13,381 INFO L124 PetriNetUnfolderBase]: 1172/3448 cut-off events. [2023-08-26 22:26:13,382 INFO L125 PetriNetUnfolderBase]: For 47653/47653 co-relation queries the response was YES. [2023-08-26 22:26:13,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18675 conditions, 3448 events. 1172/3448 cut-off events. For 47653/47653 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 17283 event pairs, 33 based on Foata normal form. 456/3904 useless extension candidates. Maximal degree in co-relation 18631. Up to 894 conditions per place. [2023-08-26 22:26:13,412 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 1266 selfloop transitions, 65 changer transitions 254/1586 dead transitions. [2023-08-26 22:26:13,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1586 transitions, 17290 flow [2023-08-26 22:26:13,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-26 22:26:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-26 22:26:13,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 6388 transitions. [2023-08-26 22:26:13,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136068178535317 [2023-08-26 22:26:13,421 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 6388 transitions. [2023-08-26 22:26:13,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 6388 transitions. [2023-08-26 22:26:13,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:26:13,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 6388 transitions. [2023-08-26 22:26:13,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 138.8695652173913) internal successors, (6388), 46 states have internal predecessors, (6388), 0 states have call successors, (0), 0 states 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 22:26:13,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 301.0) internal successors, (14147), 47 states have internal predecessors, (14147), 0 states have call successors, (0), 0 states 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 22:26:13,445 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 301.0) internal successors, (14147), 47 states have internal predecessors, (14147), 0 states have call successors, (0), 0 states 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 22:26:13,445 INFO L175 Difference]: Start difference. First operand has 129 places, 98 transitions, 893 flow. Second operand 46 states and 6388 transitions. [2023-08-26 22:26:13,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1586 transitions, 17290 flow [2023-08-26 22:26:13,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 1586 transitions, 17142 flow, removed 63 selfloop flow, removed 9 redundant places. [2023-08-26 22:26:13,521 INFO L231 Difference]: Finished difference. Result has 177 places, 134 transitions, 1277 flow [2023-08-26 22:26:13,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1277, PETRI_PLACES=177, PETRI_TRANSITIONS=134} [2023-08-26 22:26:13,522 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 145 predicate places. [2023-08-26 22:26:13,522 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 134 transitions, 1277 flow [2023-08-26 22:26:13,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 128.3125) internal successors, (6159), 48 states have internal predecessors, (6159), 0 states have call successors, (0), 0 states 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 22:26:13,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:26:13,523 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 22, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-26 22:26:13,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 22:26:13,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:26:13,729 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:26:13,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:26:13,730 INFO L85 PathProgramCache]: Analyzing trace with hash 126665858, now seen corresponding path program 3 times [2023-08-26 22:26:13,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:26:13,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571324492] [2023-08-26 22:26:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:13,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:26:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 0 proven. 958 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:14,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:26:14,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571324492] [2023-08-26 22:26:14,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571324492] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:26:15,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388040561] [2023-08-26 22:26:15,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 22:26:15,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:26:15,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:26:15,001 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:26:15,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 22:26:15,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-26 22:26:15,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:26:15,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 82 conjunts are in the unsatisfiable core [2023-08-26 22:26:15,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:26:15,239 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-08-26 22:26:15,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 22:26:15,244 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 22:26:15,396 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 22:26:15,522 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 22:26:15,651 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 22:26:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 140 proven. 168 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-08-26 22:26:16,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:26:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 122 proven. 186 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-08-26 22:26:16,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388040561] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:26:16,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:26:16,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 12, 12] total 70 [2023-08-26 22:26:16,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188907859] [2023-08-26 22:26:16,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:26:16,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-08-26 22:26:16,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:26:16,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-08-26 22:26:16,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=4027, Unknown=0, NotChecked=0, Total=4830 [2023-08-26 22:26:16,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 301 [2023-08-26 22:26:16,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 134 transitions, 1277 flow. Second operand has 70 states, 70 states have (on average 94.25714285714285) internal successors, (6598), 70 states have internal predecessors, (6598), 0 states have call successors, (0), 0 states 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 22:26:16,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:26:16,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 301 [2023-08-26 22:26:16,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:26:19,909 INFO L124 PetriNetUnfolderBase]: 1220/3596 cut-off events. [2023-08-26 22:26:19,909 INFO L125 PetriNetUnfolderBase]: For 40407/40407 co-relation queries the response was YES. [2023-08-26 22:26:19,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20144 conditions, 3596 events. 1220/3596 cut-off events. For 40407/40407 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 17910 event pairs, 33 based on Foata normal form. 42/3638 useless extension candidates. Maximal degree in co-relation 20088. Up to 879 conditions per place. [2023-08-26 22:26:19,939 INFO L140 encePairwiseOnDemand]: 289/301 looper letters, 1132 selfloop transitions, 301 changer transitions 266/1700 dead transitions. [2023-08-26 22:26:19,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 1700 transitions, 18469 flow [2023-08-26 22:26:19,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-08-26 22:26:19,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2023-08-26 22:26:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 9816 transitions. [2023-08-26 22:26:19,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3294070270814457 [2023-08-26 22:26:19,953 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 9816 transitions. [2023-08-26 22:26:19,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 9816 transitions. [2023-08-26 22:26:19,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:26:19,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 9816 transitions. [2023-08-26 22:26:19,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 99.15151515151516) internal successors, (9816), 99 states have internal predecessors, (9816), 0 states have call successors, (0), 0 states 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 22:26:19,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 301.0) internal successors, (30100), 100 states have internal predecessors, (30100), 0 states have call successors, (0), 0 states 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 22:26:19,993 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 301.0) internal successors, (30100), 100 states have internal predecessors, (30100), 0 states have call successors, (0), 0 states 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 22:26:19,993 INFO L175 Difference]: Start difference. First operand has 177 places, 134 transitions, 1277 flow. Second operand 99 states and 9816 transitions. [2023-08-26 22:26:19,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 1700 transitions, 18469 flow [2023-08-26 22:26:20,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 1700 transitions, 18281 flow, removed 54 selfloop flow, removed 21 redundant places. [2023-08-26 22:26:20,091 INFO L231 Difference]: Finished difference. Result has 267 places, 358 transitions, 3511 flow [2023-08-26 22:26:20,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=3511, PETRI_PLACES=267, PETRI_TRANSITIONS=358} [2023-08-26 22:26:20,091 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 235 predicate places. [2023-08-26 22:26:20,091 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 358 transitions, 3511 flow [2023-08-26 22:26:20,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 94.25714285714285) internal successors, (6598), 70 states have internal predecessors, (6598), 0 states have call successors, (0), 0 states 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 22:26:20,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:26:20,093 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 23, 22, 22, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:26:20,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 22:26:20,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:26:20,293 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:26:20,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:26:20,293 INFO L85 PathProgramCache]: Analyzing trace with hash 58371100, now seen corresponding path program 1 times [2023-08-26 22:26:20,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:26:20,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198101698] [2023-08-26 22:26:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:20,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:26:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 1062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:21,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:26:21,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198101698] [2023-08-26 22:26:21,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198101698] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:26:21,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524079957] [2023-08-26 22:26:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:21,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:26:21,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:26:21,671 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:26:21,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 22:26:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:21,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-26 22:26:21,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:26:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 1062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:22,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:26:23,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 1062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:23,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524079957] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:26:23,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:26:23,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 99 [2023-08-26 22:26:23,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675113999] [2023-08-26 22:26:23,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:26:23,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-08-26 22:26:23,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:26:23,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-08-26 22:26:23,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2023-08-26 22:26:23,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-26 22:26:23,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 358 transitions, 3511 flow. Second operand has 100 states, 100 states have (on average 128.25) internal successors, (12825), 100 states have internal predecessors, (12825), 0 states have call successors, (0), 0 states 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 22:26:23,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:26:23,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-26 22:26:23,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:26:29,121 INFO L124 PetriNetUnfolderBase]: 2520/7496 cut-off events. [2023-08-26 22:26:29,121 INFO L125 PetriNetUnfolderBase]: For 328096/328096 co-relation queries the response was YES. [2023-08-26 22:26:29,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43272 conditions, 7496 events. 2520/7496 cut-off events. For 328096/328096 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 38027 event pairs, 33 based on Foata normal form. 950/8446 useless extension candidates. Maximal degree in co-relation 43202. Up to 1829 conditions per place. [2023-08-26 22:26:29,187 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 2807 selfloop transitions, 154 changer transitions 566/3528 dead transitions. [2023-08-26 22:26:29,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 3528 transitions, 41751 flow [2023-08-26 22:26:29,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-08-26 22:26:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2023-08-26 22:26:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 13629 transitions. [2023-08-26 22:26:29,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46203132415757 [2023-08-26 22:26:29,206 INFO L72 ComplementDD]: Start complementDD. Operand 98 states and 13629 transitions. [2023-08-26 22:26:29,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 13629 transitions. [2023-08-26 22:26:29,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:26:29,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 98 states and 13629 transitions. [2023-08-26 22:26:29,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 99 states, 98 states have (on average 139.07142857142858) internal successors, (13629), 98 states have internal predecessors, (13629), 0 states have call successors, (0), 0 states 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 22:26:29,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 99 states, 99 states have (on average 301.0) internal successors, (29799), 99 states have internal predecessors, (29799), 0 states have call successors, (0), 0 states 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 22:26:29,251 INFO L81 ComplementDD]: Finished complementDD. Result has 99 states, 99 states have (on average 301.0) internal successors, (29799), 99 states have internal predecessors, (29799), 0 states have call successors, (0), 0 states 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 22:26:29,251 INFO L175 Difference]: Start difference. First operand has 267 places, 358 transitions, 3511 flow. Second operand 98 states and 13629 transitions. [2023-08-26 22:26:29,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 3528 transitions, 41751 flow [2023-08-26 22:26:29,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 3528 transitions, 41487 flow, removed 52 selfloop flow, removed 49 redundant places. [2023-08-26 22:26:29,543 INFO L231 Difference]: Finished difference. Result has 340 places, 433 transitions, 4436 flow [2023-08-26 22:26:29,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=98, PETRI_FLOW=4436, PETRI_PLACES=340, PETRI_TRANSITIONS=433} [2023-08-26 22:26:29,544 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 308 predicate places. [2023-08-26 22:26:29,544 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 433 transitions, 4436 flow [2023-08-26 22:26:29,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 128.25) internal successors, (12825), 100 states have internal predecessors, (12825), 0 states have call successors, (0), 0 states 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 22:26:29,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:26:29,546 INFO L208 CegarLoopForPetriNet]: trace histogram [49, 48, 47, 47, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:26:29,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 22:26:29,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-26 22:26:29,756 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:26:29,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:26:29,756 INFO L85 PathProgramCache]: Analyzing trace with hash -46271666, now seen corresponding path program 2 times [2023-08-26 22:26:29,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:26:29,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521938435] [2023-08-26 22:26:29,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:26:29,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:26:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:26:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4612 backedges. 0 proven. 4612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:34,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:26:34,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521938435] [2023-08-26 22:26:34,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521938435] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:26:34,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659717251] [2023-08-26 22:26:34,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:26:34,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:26:34,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:26:34,773 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:26:34,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 22:26:35,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 22:26:35,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:26:35,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 99 conjunts are in the unsatisfiable core [2023-08-26 22:26:35,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:26:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4612 backedges. 0 proven. 4612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:35,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:26:41,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4612 backedges. 0 proven. 4612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:26:41,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659717251] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:26:41,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:26:41,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 199 [2023-08-26 22:26:41,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541706007] [2023-08-26 22:26:41,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:26:41,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2023-08-26 22:26:41,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:26:41,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2023-08-26 22:26:41,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10099, Invalid=29701, Unknown=0, NotChecked=0, Total=39800 [2023-08-26 22:26:41,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-26 22:26:41,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 433 transitions, 4436 flow. Second operand has 200 states, 200 states have (on average 128.125) internal successors, (25625), 200 states have internal predecessors, (25625), 0 states have call successors, (0), 0 states 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 22:26:41,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:26:41,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-26 22:26:41,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:04,896 INFO L124 PetriNetUnfolderBase]: 5120/15296 cut-off events. [2023-08-26 22:27:04,897 INFO L125 PetriNetUnfolderBase]: For 2404701/2404701 co-relation queries the response was YES. [2023-08-26 22:27:05,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92765 conditions, 15296 events. 5120/15296 cut-off events. For 2404701/2404701 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 78953 event pairs, 33 based on Foata normal form. 1900/17196 useless extension candidates. Maximal degree in co-relation 92671. Up to 3729 conditions per place. [2023-08-26 22:27:05,069 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 5757 selfloop transitions, 304 changer transitions 1166/7228 dead transitions. [2023-08-26 22:27:05,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 7228 transitions, 86126 flow [2023-08-26 22:27:05,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2023-08-26 22:27:05,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2023-08-26 22:27:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 27554 transitions. [2023-08-26 22:27:05,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46233095070304375 [2023-08-26 22:27:05,096 INFO L72 ComplementDD]: Start complementDD. Operand 198 states and 27554 transitions. [2023-08-26 22:27:05,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 198 states and 27554 transitions. [2023-08-26 22:27:05,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:05,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 198 states and 27554 transitions. [2023-08-26 22:27:05,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 199 states, 198 states have (on average 139.16161616161617) internal successors, (27554), 198 states have internal predecessors, (27554), 0 states have call successors, (0), 0 states 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 22:27:05,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 199 states, 199 states have (on average 301.0) internal successors, (59899), 199 states have internal predecessors, (59899), 0 states have call successors, (0), 0 states 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 22:27:05,200 INFO L81 ComplementDD]: Finished complementDD. Result has 199 states, 199 states have (on average 301.0) internal successors, (59899), 199 states have internal predecessors, (59899), 0 states have call successors, (0), 0 states 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 22:27:05,202 INFO L175 Difference]: Start difference. First operand has 340 places, 433 transitions, 4436 flow. Second operand 198 states and 27554 transitions. [2023-08-26 22:27:05,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 7228 transitions, 86126 flow [2023-08-26 22:27:06,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 7228 transitions, 85096 flow, removed 430 selfloop flow, removed 48 redundant places. [2023-08-26 22:27:06,442 INFO L231 Difference]: Finished difference. Result has 539 places, 583 transitions, 5970 flow [2023-08-26 22:27:06,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=3906, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=198, PETRI_FLOW=5970, PETRI_PLACES=539, PETRI_TRANSITIONS=583} [2023-08-26 22:27:06,443 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 507 predicate places. [2023-08-26 22:27:06,443 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 583 transitions, 5970 flow [2023-08-26 22:27:06,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 200 states, 200 states have (on average 128.125) internal successors, (25625), 200 states have internal predecessors, (25625), 0 states have call successors, (0), 0 states 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 22:27:06,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:06,446 INFO L208 CegarLoopForPetriNet]: trace histogram [99, 98, 97, 97, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:06,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-26 22:27:06,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-26 22:27:06,651 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:27:06,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:06,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1196393010, now seen corresponding path program 3 times [2023-08-26 22:27:06,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:06,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40185224] [2023-08-26 22:27:06,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:06,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 19212 backedges. 0 proven. 19212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:24,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40185224] [2023-08-26 22:27:24,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40185224] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:27:24,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318248775] [2023-08-26 22:27:24,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 22:27:24,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:24,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:24,633 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:27:24,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 22:27:24,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-26 22:27:24,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:27:24,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-26 22:27:24,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:27:25,400 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 22:27:25,753 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 22:27:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 19212 backedges. 1064 proven. 190 refuted. 0 times theorem prover too weak. 17958 trivial. 0 not checked. [2023-08-26 22:27:27,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:27:28,584 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-26 22:27:28,584 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 44 treesize of output 32 [2023-08-26 22:27:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 19212 backedges. 968 proven. 286 refuted. 0 times theorem prover too weak. 17958 trivial. 0 not checked. [2023-08-26 22:27:28,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318248775] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:27:28,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:27:28,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [199, 9, 10] total 216 [2023-08-26 22:27:28,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134335363] [2023-08-26 22:27:28,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:27:28,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2023-08-26 22:27:28,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:28,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2023-08-26 22:27:28,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10178, Invalid=36262, Unknown=0, NotChecked=0, Total=46440 [2023-08-26 22:27:28,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 301 [2023-08-26 22:27:28,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 583 transitions, 5970 flow. Second operand has 216 states, 216 states have (on average 83.17129629629629) internal successors, (17965), 216 states have internal predecessors, (17965), 0 states have call successors, (0), 0 states 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 22:27:28,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:28,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 301 [2023-08-26 22:27:28,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:30:35,142 INFO L124 PetriNetUnfolderBase]: 4190/12712 cut-off events. [2023-08-26 22:30:35,142 INFO L125 PetriNetUnfolderBase]: For 416911/416911 co-relation queries the response was YES. [2023-08-26 22:30:35,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78152 conditions, 12712 events. 4190/12712 cut-off events. For 416911/416911 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 55491 event pairs, 11 based on Foata normal form. 132/12844 useless extension candidates. Maximal degree in co-relation 78009. Up to 3277 conditions per place. [2023-08-26 22:30:35,301 INFO L140 encePairwiseOnDemand]: 287/301 looper letters, 3163 selfloop transitions, 3646 changer transitions 1178/7988 dead transitions. [2023-08-26 22:30:35,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1830 places, 7988 transitions, 94867 flow [2023-08-26 22:30:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1292 states. [2023-08-26 22:30:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2023-08-26 22:30:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 109989 transitions. [2023-08-26 22:30:35,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2828265945301009 [2023-08-26 22:30:35,413 INFO L72 ComplementDD]: Start complementDD. Operand 1292 states and 109989 transitions. [2023-08-26 22:30:35,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1292 states and 109989 transitions. [2023-08-26 22:30:35,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:30:35,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 1292 states and 109989 transitions. [2023-08-26 22:30:35,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 1293 states, 1292 states have (on average 85.13080495356037) internal successors, (109989), 1292 states have internal predecessors, (109989), 0 states have call successors, (0), 0 states 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 22:30:36,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 1293 states, 1293 states have (on average 301.0) internal successors, (389193), 1293 states have internal predecessors, (389193), 0 states have call successors, (0), 0 states 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 22:30:36,173 INFO L81 ComplementDD]: Finished complementDD. Result has 1293 states, 1293 states have (on average 301.0) internal successors, (389193), 1293 states have internal predecessors, (389193), 0 states have call successors, (0), 0 states 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 22:30:36,173 INFO L175 Difference]: Start difference. First operand has 539 places, 583 transitions, 5970 flow. Second operand 1292 states and 109989 transitions. [2023-08-26 22:30:36,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1830 places, 7988 transitions, 94867 flow [2023-08-26 22:30:37,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1733 places, 7988 transitions, 91875 flow, removed 1065 selfloop flow, removed 97 redundant places. [2023-08-26 22:30:38,008 INFO L231 Difference]: Finished difference. Result has 1740 places, 3703 transitions, 44367 flow [2023-08-26 22:30:38,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=4636, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=480, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=1292, PETRI_FLOW=44367, PETRI_PLACES=1740, PETRI_TRANSITIONS=3703} [2023-08-26 22:30:38,010 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1708 predicate places. [2023-08-26 22:30:38,010 INFO L495 AbstractCegarLoop]: Abstraction has has 1740 places, 3703 transitions, 44367 flow [2023-08-26 22:30:38,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 216 states have (on average 83.17129629629629) internal successors, (17965), 216 states have internal predecessors, (17965), 0 states have call successors, (0), 0 states 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 22:30:38,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:30:38,013 INFO L208 CegarLoopForPetriNet]: trace histogram [100, 99, 97, 97, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:30:38,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 22:30:38,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:30:38,214 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:30:38,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:30:38,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1235489766, now seen corresponding path program 4 times [2023-08-26 22:30:38,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:30:38,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916832505] [2023-08-26 22:30:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:30:38,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:30:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:30:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 19515 backedges. 0 proven. 19515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:30:55,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:30:55,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916832505] [2023-08-26 22:30:55,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916832505] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:30:55,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276136993] [2023-08-26 22:30:55,411 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 22:30:55,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:30:55,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:30:55,412 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:30:55,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-26 22:30:56,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 22:30:56,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:30:56,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 3390 conjuncts, 201 conjunts are in the unsatisfiable core [2023-08-26 22:30:56,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:30:57,440 INFO L134 CoverageAnalysis]: Checked inductivity of 19515 backedges. 0 proven. 19515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:30:57,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:31:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 19515 backedges. 0 proven. 19515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:31:23,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276136993] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:31:23,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:31:23,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [201, 201, 201] total 403 [2023-08-26 22:31:23,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973100516] [2023-08-26 22:31:23,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:31:23,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 404 states [2023-08-26 22:31:23,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:31:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 404 interpolants. [2023-08-26 22:31:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41005, Invalid=121807, Unknown=0, NotChecked=0, Total=162812 [2023-08-26 22:31:23,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-26 22:31:23,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1740 places, 3703 transitions, 44367 flow. Second operand has 404 states, 404 states have (on average 128.07178217821783) internal successors, (51741), 404 states have internal predecessors, (51741), 0 states have call successors, (0), 0 states 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 22:31:23,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:31:23,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-26 22:31:23,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:34:39,152 INFO L124 PetriNetUnfolderBase]: 8432/25640 cut-off events. [2023-08-26 22:34:39,152 INFO L125 PetriNetUnfolderBase]: For 18309047/18309047 co-relation queries the response was YES. [2023-08-26 22:34:39,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171205 conditions, 25640 events. 8432/25640 cut-off events. For 18309047/18309047 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 116739 event pairs, 30 based on Foata normal form. 3333/28973 useless extension candidates. Maximal degree in co-relation 171054. Up to 6610 conditions per place. [2023-08-26 22:34:39,510 INFO L140 encePairwiseOnDemand]: 296/301 looper letters, 10582 selfloop transitions, 1193 changer transitions 2390/14166 dead transitions. [2023-08-26 22:34:39,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2141 places, 14166 transitions, 179500 flow [2023-08-26 22:34:39,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 402 states. [2023-08-26 22:34:39,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2023-08-26 22:34:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 55959 transitions. [2023-08-26 22:34:39,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46246343035652304 [2023-08-26 22:34:39,552 INFO L72 ComplementDD]: Start complementDD. Operand 402 states and 55959 transitions. [2023-08-26 22:34:39,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 402 states and 55959 transitions. [2023-08-26 22:34:39,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:34:39,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 402 states and 55959 transitions. [2023-08-26 22:34:39,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 403 states, 402 states have (on average 139.20149253731344) internal successors, (55959), 402 states have internal predecessors, (55959), 0 states have call successors, (0), 0 states 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 22:34:39,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 403 states, 403 states have (on average 301.0) internal successors, (121303), 403 states have internal predecessors, (121303), 0 states have call successors, (0), 0 states 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 22:34:39,938 INFO L81 ComplementDD]: Finished complementDD. Result has 403 states, 403 states have (on average 301.0) internal successors, (121303), 403 states have internal predecessors, (121303), 0 states have call successors, (0), 0 states 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 22:34:39,938 INFO L175 Difference]: Start difference. First operand has 1740 places, 3703 transitions, 44367 flow. Second operand 402 states and 55959 transitions. [2023-08-26 22:34:39,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2141 places, 14166 transitions, 179500 flow [2023-08-26 22:34:47,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1926 places, 14166 transitions, 159792 flow, removed 4898 selfloop flow, removed 215 redundant places. [2023-08-26 22:34:47,705 INFO L231 Difference]: Finished difference. Result has 2027 places, 4006 transitions, 41740 flow [2023-08-26 22:34:47,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=301, PETRI_DIFFERENCE_MINUEND_FLOW=34601, PETRI_DIFFERENCE_MINUEND_PLACES=1525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=893, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2810, PETRI_DIFFERENCE_SUBTRAHEND_STATES=402, PETRI_FLOW=41740, PETRI_PLACES=2027, PETRI_TRANSITIONS=4006} [2023-08-26 22:34:47,709 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1995 predicate places. [2023-08-26 22:34:47,709 INFO L495 AbstractCegarLoop]: Abstraction has has 2027 places, 4006 transitions, 41740 flow [2023-08-26 22:34:47,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 404 states, 404 states have (on average 128.07178217821783) internal successors, (51741), 404 states have internal predecessors, (51741), 0 states have call successors, (0), 0 states 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 22:34:47,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:34:47,717 INFO L208 CegarLoopForPetriNet]: trace histogram [201, 200, 198, 198, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:34:47,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-26 22:34:47,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:34:47,935 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-26 22:34:47,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:34:47,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1826773936, now seen corresponding path program 5 times [2023-08-26 22:34:47,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:34:47,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538135273] [2023-08-26 22:34:47,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:34:47,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:34:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:36:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 79812 backedges. 0 proven. 79812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:36:12,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:36:12,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538135273] [2023-08-26 22:36:12,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538135273] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:36:12,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826637560] [2023-08-26 22:36:12,807 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 22:36:12,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:36:12,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:36:12,815 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:36:12,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process Received shutdown request... [2023-08-26 22:38:25,199 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 22:38:25,200 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 22:38:26,211 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 [2023-08-26 22:38:26,406 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forcibly destroying the process [2023-08-26 22:38:26,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 137 [2023-08-26 22:38:26,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:38:26,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:38:26,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [403] total 403 [2023-08-26 22:38:26,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922173797] [2023-08-26 22:38:26,417 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-26 22:38:26,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 404 states [2023-08-26 22:38:26,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:38:26,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 404 interpolants. [2023-08-26 22:38:26,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41005, Invalid=121807, Unknown=0, NotChecked=0, Total=162812 [2023-08-26 22:38:26,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 301 [2023-08-26 22:38:26,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2027 places, 4006 transitions, 41740 flow. Second operand has 404 states, 404 states have (on average 128.02970297029702) internal successors, (51724), 404 states have internal predecessors, (51724), 0 states have call successors, (0), 0 states 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 22:38:26,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:38:26,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 301 [2023-08-26 22:38:26,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:38:26,478 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-08-26 22:38:26,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 22:38:26,478 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-26 22:38:26,479 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-26 22:38:26,479 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-26 22:38:26,480 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-26 22:38:26,480 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-08-26 22:38:26,480 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr1ASSERT_VIOLATIONASSERT (7 of 13 remaining) [2023-08-26 22:38:26,480 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr0ASSERT_VIOLATIONASSERT (6 of 13 remaining) [2023-08-26 22:38:26,480 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-26 22:38:26,480 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-26 22:38:26,480 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr1ASSERT_VIOLATIONASSERT (3 of 13 remaining) [2023-08-26 22:38:26,480 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr0ASSERT_VIOLATIONASSERT (2 of 13 remaining) [2023-08-26 22:38:26,480 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-26 22:38:26,481 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-26 22:38:26,481 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:38:26,484 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 22:38:26,484 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 22:38:26,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 10:38:26 BasicIcfg [2023-08-26 22:38:26,486 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 22:38:26,487 INFO L158 Benchmark]: Toolchain (without parser) took 759983.87ms. Allocated memory was 373.3MB in the beginning and 5.9GB in the end (delta: 5.5GB). Free memory was 347.8MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. [2023-08-26 22:38:26,487 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 373.3MB. Free memory was 351.0MB in the beginning and 350.8MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 22:38:26,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.85ms. Allocated memory is still 373.3MB. Free memory was 347.8MB in the beginning and 328.3MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 22:38:26,487 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.96ms. Allocated memory is still 373.3MB. Free memory was 328.3MB in the beginning and 325.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 22:38:26,488 INFO L158 Benchmark]: Boogie Preprocessor took 46.12ms. Allocated memory is still 373.3MB. Free memory was 325.5MB in the beginning and 324.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 22:38:26,488 INFO L158 Benchmark]: RCFGBuilder took 392.96ms. Allocated memory is still 373.3MB. Free memory was 324.1MB in the beginning and 307.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-26 22:38:26,488 INFO L158 Benchmark]: TraceAbstraction took 758986.85ms. Allocated memory was 373.3MB in the beginning and 5.9GB in the end (delta: 5.5GB). Free memory was 306.7MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 3.3GB. Max. memory is 16.0GB. [2023-08-26 22:38:26,489 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 373.3MB. Free memory was 351.0MB in the beginning and 350.8MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 488.85ms. Allocated memory is still 373.3MB. Free memory was 347.8MB in the beginning and 328.3MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 63.96ms. Allocated memory is still 373.3MB. Free memory was 328.3MB in the beginning and 325.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 46.12ms. Allocated memory is still 373.3MB. Free memory was 325.5MB in the beginning and 324.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 392.96ms. Allocated memory is still 373.3MB. Free memory was 324.1MB in the beginning and 307.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 758986.85ms. Allocated memory was 373.3MB in the beginning and 5.9GB in the end (delta: 5.5GB). Free memory was 306.7MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 3.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 140 PlacesBefore, 32 PlacesAfterwards, 148 TransitionsBefore, 34 TransitionsAfterwards, 5984 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 87 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 6 ChoiceCompositions, 152 TotalNumberOfCompositions, 8283 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5961, independent: 5779, independent conditional: 0, independent unconditional: 5779, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3546, independent: 3493, independent conditional: 0, independent unconditional: 3493, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5961, independent: 2286, independent conditional: 0, independent unconditional: 2286, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 3546, unknown conditional: 0, unknown unconditional: 3546] , Statistics on independence cache: Total cache size (in pairs): 156, Positive cache size: 136, Positive conditional cache size: 0, Positive unconditional cache size: 136, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 749]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 715]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 715]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 749]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 748]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 728]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 728]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 199 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 758.8s, OverallIterations: 25, TraceHistogramMax: 201, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 436.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58756 SdHoareTripleChecker+Valid, 19.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58756 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 15.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 3019 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26103 IncrementalHoareTripleChecker+Invalid, 29123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3019 mSolverCounterUnsat, 1 mSDtfsCounter, 26103 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6595 GetRequests, 3151 SyntacticMatches, 2 SemanticMatches, 3442 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184327 ImplicationChecksByTransitivity, 270.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44367occurred in iteration=23, InterpolantAutomatonStates: 2303, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 175.7s InterpolantComputationTime, 3909 NumberOfCodeBlocks, 3469 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 5320 ConstructedInterpolants, 32 QuantifiedInterpolants, 27395 SizeOfPredicates, 343 NumberOfNonLiveVariables, 9431 ConjunctsInSsa, 805 ConjunctsInUnsatCore, 53 InterpolantComputations, 13 PerfectInterpolantSequences, 39578/216747 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown