/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:32:38,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:32:38,988 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 11:32:38,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:32:38,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:32:39,015 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:32:39,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:32:39,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:32:39,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:32:39,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:32:39,019 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:32:39,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:32:39,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:32:39,021 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:32:39,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:32:39,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:32:39,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:32:39,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:32:39,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:32:39,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:32:39,022 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:32:39,022 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:32:39,023 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:32:39,023 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:32:39,023 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:32:39,023 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:32:39,023 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:32:39,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:32:39,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:32:39,024 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:32:39,025 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:32:39,025 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:32:39,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:32:39,025 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:32:39,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:32:39,025 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:32:39,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:32:39,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:32:39,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:32:39,267 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:32:39,268 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:32:39,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2023-08-27 11:32:40,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:32:40,389 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:32:40,389 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2023-08-27 11:32:40,399 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea556a0ef/ff69f682c7b3497c8201406cde409c9e/FLAG65a3ed6c5 [2023-08-27 11:32:40,410 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea556a0ef/ff69f682c7b3497c8201406cde409c9e [2023-08-27 11:32:40,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:32:40,413 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:32:40,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:32:40,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:32:40,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:32:40,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:32:40" (1/1) ... [2023-08-27 11:32:40,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7940c6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:32:40, skipping insertion in model container [2023-08-27 11:32:40,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:32:40" (1/1) ... [2023-08-27 11:32:40,444 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:32:40,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:32:40,636 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:32:40,662 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-27 11:32:40,663 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-27 11:32:40,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:32:40,720 WARN L669 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 11:32:40,725 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:32:40,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:32:40 WrapperNode [2023-08-27 11:32:40,725 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:32:40,726 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:32:40,726 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:32:40,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:32:40,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:32:40" (1/1) ... [2023-08-27 11:32:40,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:32:40" (1/1) ... [2023-08-27 11:32:40,773 INFO L138 Inliner]: procedures = 173, calls = 40, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 150 [2023-08-27 11:32:40,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:32:40,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:32:40,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:32:40,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:32:40,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:32:40" (1/1) ... [2023-08-27 11:32:40,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:32:40" (1/1) ... [2023-08-27 11:32:40,787 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:32:40" (1/1) ... [2023-08-27 11:32:40,787 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:32:40" (1/1) ... [2023-08-27 11:32:40,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:32:40" (1/1) ... [2023-08-27 11:32:40,793 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:32:40" (1/1) ... [2023-08-27 11:32:40,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:32:40" (1/1) ... [2023-08-27 11:32:40,795 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:32:40" (1/1) ... [2023-08-27 11:32:40,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:32:40,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:32:40,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:32:40,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:32:40,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:32:40" (1/1) ... [2023-08-27 11:32:40,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:32:40,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:40,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 11:32:40,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 11:32:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:32:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:32:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:32:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:32:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:32:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:32:40,904 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:32:40,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:32:40,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:32:40,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:32:40,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:32:40,906 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 11:32:40,999 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:32:41,001 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:32:41,208 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:32:41,213 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:32:41,214 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-27 11:32:41,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:32:41 BoogieIcfgContainer [2023-08-27 11:32:41,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:32:41,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:32:41,217 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:32:41,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:32:41,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:32:40" (1/3) ... [2023-08-27 11:32:41,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71671d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:32:41, skipping insertion in model container [2023-08-27 11:32:41,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:32:40" (2/3) ... [2023-08-27 11:32:41,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71671d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:32:41, skipping insertion in model container [2023-08-27 11:32:41,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:32:41" (3/3) ... [2023-08-27 11:32:41,220 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2023-08-27 11:32:41,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:32:41,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-27 11:32:41,232 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:32:41,286 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 11:32:41,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 162 transitions, 332 flow [2023-08-27 11:32:41,352 INFO L124 PetriNetUnfolderBase]: 27/247 cut-off events. [2023-08-27 11:32:41,352 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:32:41,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 247 events. 27/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 758 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2023-08-27 11:32:41,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 162 transitions, 332 flow [2023-08-27 11:32:41,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 159 transitions, 326 flow [2023-08-27 11:32:41,364 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:32:41,371 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 159 transitions, 326 flow [2023-08-27 11:32:41,373 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 159 transitions, 326 flow [2023-08-27 11:32:41,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 159 transitions, 326 flow [2023-08-27 11:32:41,399 INFO L124 PetriNetUnfolderBase]: 26/244 cut-off events. [2023-08-27 11:32:41,400 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:32:41,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 244 events. 26/244 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 739 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2023-08-27 11:32:41,403 INFO L119 LiptonReduction]: Number of co-enabled transitions 4560 [2023-08-27 11:32:44,383 INFO L134 LiptonReduction]: Checked pairs total: 6184 [2023-08-27 11:32:44,384 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-08-27 11:32:44,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:32:44,424 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;@62d1ad62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:32:44,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-27 11:32:44,427 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:32:44,427 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2023-08-27 11:32:44,427 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:32:44,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:44,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:32:44,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-27 11:32:44,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:44,434 INFO L85 PathProgramCache]: Analyzing trace with hash 18497163, now seen corresponding path program 1 times [2023-08-27 11:32:44,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:44,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515728961] [2023-08-27 11:32:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:44,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:44,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:44,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:44,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515728961] [2023-08-27 11:32:44,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515728961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:44,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:44,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:32:44,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635560143] [2023-08-27 11:32:44,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:44,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:32:44,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:44,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:32:44,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:32:44,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 312 [2023-08-27 11:32:44,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 46 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:44,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 312 [2023-08-27 11:32:44,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:44,730 INFO L124 PetriNetUnfolderBase]: 97/229 cut-off events. [2023-08-27 11:32:44,730 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:32:44,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 229 events. 97/229 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1041 event pairs, 0 based on Foata normal form. 24/186 useless extension candidates. Maximal degree in co-relation 421. Up to 203 conditions per place. [2023-08-27 11:32:44,734 INFO L140 encePairwiseOnDemand]: 297/312 looper letters, 33 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-27 11:32:44,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 156 flow [2023-08-27 11:32:44,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:32:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:32:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2023-08-27 11:32:44,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967948717948718 [2023-08-27 11:32:44,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2023-08-27 11:32:44,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2023-08-27 11:32:44,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:44,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2023-08-27 11:32:44,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,757 INFO L175 Difference]: Start difference. First operand has 38 places, 46 transitions, 100 flow. Second operand 3 states and 465 transitions. [2023-08-27 11:32:44,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 156 flow [2023-08-27 11:32:44,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 156 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:32:44,760 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 82 flow [2023-08-27 11:32:44,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-08-27 11:32:44,763 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -1 predicate places. [2023-08-27 11:32:44,763 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 82 flow [2023-08-27 11:32:44,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:44,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:32:44,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:32:44,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [t_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-27 11:32:44,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:44,765 INFO L85 PathProgramCache]: Analyzing trace with hash 577678566, now seen corresponding path program 1 times [2023-08-27 11:32:44,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:44,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755895913] [2023-08-27 11:32:44,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:44,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:44,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:44,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755895913] [2023-08-27 11:32:44,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755895913] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:44,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:44,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:32:44,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487136103] [2023-08-27 11:32:44,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:44,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:32:44,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:32:44,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:32:44,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 312 [2023-08-27 11:32:44,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:44,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 312 [2023-08-27 11:32:44,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:44,923 INFO L124 PetriNetUnfolderBase]: 123/288 cut-off events. [2023-08-27 11:32:44,923 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 11:32:44,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 288 events. 123/288 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1142 event pairs, 46 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 548. Up to 180 conditions per place. [2023-08-27 11:32:44,927 INFO L140 encePairwiseOnDemand]: 307/312 looper letters, 41 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-27 11:32:44,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 199 flow [2023-08-27 11:32:44,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:32:44,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:32:44,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-08-27 11:32:44,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49786324786324787 [2023-08-27 11:32:44,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-08-27 11:32:44,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-08-27 11:32:44,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:44,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-08-27 11:32:44,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,934 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 82 flow. Second operand 3 states and 466 transitions. [2023-08-27 11:32:44,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 47 transitions, 199 flow [2023-08-27 11:32:44,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 195 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:32:44,936 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 90 flow [2023-08-27 11:32:44,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-08-27 11:32:44,937 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2023-08-27 11:32:44,937 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 90 flow [2023-08-27 11:32:44,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:44,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:44,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:32:44,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-08-27 11:32:44,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:44,943 INFO L85 PathProgramCache]: Analyzing trace with hash 729669232, now seen corresponding path program 1 times [2023-08-27 11:32:44,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:44,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652112329] [2023-08-27 11:32:44,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:44,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:45,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:45,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652112329] [2023-08-27 11:32:45,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652112329] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:45,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661119786] [2023-08-27 11:32:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:45,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:45,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:45,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:32:45,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 11:32:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:45,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:32:45,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:45,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:45,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661119786] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:45,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:45,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:32:45,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509852945] [2023-08-27 11:32:45,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:45,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:32:45,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:45,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:32:45,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:32:45,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 312 [2023-08-27 11:32:45,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 140.14285714285714) internal successors, (981), 7 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:45,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:45,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 312 [2023-08-27 11:32:45,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:45,150 INFO L124 PetriNetUnfolderBase]: 8/26 cut-off events. [2023-08-27 11:32:45,150 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:32:45,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 26 events. 8/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 5/31 useless extension candidates. Maximal degree in co-relation 56. Up to 18 conditions per place. [2023-08-27 11:32:45,150 INFO L140 encePairwiseOnDemand]: 309/312 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-08-27 11:32:45,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 62 flow [2023-08-27 11:32:45,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:32:45,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:32:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 566 transitions. [2023-08-27 11:32:45,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453525641025641 [2023-08-27 11:32:45,152 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 566 transitions. [2023-08-27 11:32:45,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 566 transitions. [2023-08-27 11:32:45,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:45,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 566 transitions. [2023-08-27 11:32:45,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:45,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:45,155 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:45,155 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 90 flow. Second operand 4 states and 566 transitions. [2023-08-27 11:32:45,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 62 flow [2023-08-27 11:32:45,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 14 transitions, 58 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:32:45,156 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-08-27 11:32:45,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2023-08-27 11:32:45,156 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -22 predicate places. [2023-08-27 11:32:45,157 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-08-27 11:32:45,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 140.14285714285714) internal successors, (981), 7 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:45,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (11 of 12 remaining) [2023-08-27 11:32:45,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-08-27 11:32:45,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-08-27 11:32:45,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-08-27 11:32:45,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-08-27 11:32:45,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-08-27 11:32:45,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-08-27 11:32:45,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (4 of 12 remaining) [2023-08-27 11:32:45,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-08-27 11:32:45,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-08-27 11:32:45,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-08-27 11:32:45,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-08-27 11:32:45,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 11:32:45,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:45,372 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-27 11:32:45,374 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:32:45,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 162 transitions, 332 flow [2023-08-27 11:32:45,395 INFO L124 PetriNetUnfolderBase]: 27/247 cut-off events. [2023-08-27 11:32:45,395 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:32:45,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 247 events. 27/247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 758 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2023-08-27 11:32:45,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 162 transitions, 332 flow [2023-08-27 11:32:45,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 153 transitions, 311 flow [2023-08-27 11:32:45,396 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:32:45,397 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 153 transitions, 311 flow [2023-08-27 11:32:45,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 153 transitions, 311 flow [2023-08-27 11:32:45,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 153 transitions, 311 flow [2023-08-27 11:32:45,407 INFO L124 PetriNetUnfolderBase]: 26/238 cut-off events. [2023-08-27 11:32:45,407 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:32:45,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 238 events. 26/238 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 677 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2023-08-27 11:32:45,409 INFO L119 LiptonReduction]: Number of co-enabled transitions 4560 [2023-08-27 11:32:47,985 INFO L134 LiptonReduction]: Checked pairs total: 5988 [2023-08-27 11:32:47,985 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-08-27 11:32:47,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:32:47,987 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;@62d1ad62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:32:47,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:32:47,990 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:32:47,990 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2023-08-27 11:32:47,990 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:32:47,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:47,990 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 11:32:47,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:32:47,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:47,990 INFO L85 PathProgramCache]: Analyzing trace with hash 598521460, now seen corresponding path program 1 times [2023-08-27 11:32:47,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:47,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948041875] [2023-08-27 11:32:47,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:47,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:32:48,011 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:32:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:32:48,027 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:32:48,027 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:32:48,027 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:32:48,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:32:48,027 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:32:48,027 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:32:48,028 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:32:48,028 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 11:32:48,053 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 11:32:48,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 188 transitions, 394 flow [2023-08-27 11:32:48,073 INFO L124 PetriNetUnfolderBase]: 45/395 cut-off events. [2023-08-27 11:32:48,073 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:32:48,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 395 events. 45/395 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1518 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 249. Up to 9 conditions per place. [2023-08-27 11:32:48,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 188 transitions, 394 flow [2023-08-27 11:32:48,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 188 transitions, 394 flow [2023-08-27 11:32:48,075 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:32:48,075 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 188 transitions, 394 flow [2023-08-27 11:32:48,075 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 188 transitions, 394 flow [2023-08-27 11:32:48,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 188 transitions, 394 flow [2023-08-27 11:32:48,094 INFO L124 PetriNetUnfolderBase]: 45/395 cut-off events. [2023-08-27 11:32:48,094 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:32:48,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 395 events. 45/395 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1518 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 249. Up to 9 conditions per place. [2023-08-27 11:32:48,099 INFO L119 LiptonReduction]: Number of co-enabled transitions 11184 [2023-08-27 11:32:50,977 INFO L134 LiptonReduction]: Checked pairs total: 17335 [2023-08-27 11:32:50,978 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-08-27 11:32:50,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:32:50,983 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;@62d1ad62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:32:50,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-27 11:32:50,984 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:32:50,984 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2023-08-27 11:32:50,984 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:32:50,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:50,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:32:50,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-27 11:32:50,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:50,985 INFO L85 PathProgramCache]: Analyzing trace with hash 34871444, now seen corresponding path program 1 times [2023-08-27 11:32:50,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:50,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704615611] [2023-08-27 11:32:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:50,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:51,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:51,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704615611] [2023-08-27 11:32:51,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704615611] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:51,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:51,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:32:51,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936424199] [2023-08-27 11:32:51,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:51,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:32:51,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:51,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:32:51,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:32:51,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 360 [2023-08-27 11:32:51,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 62 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:51,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 360 [2023-08-27 11:32:51,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:51,287 INFO L124 PetriNetUnfolderBase]: 2413/3944 cut-off events. [2023-08-27 11:32:51,288 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-27 11:32:51,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7886 conditions, 3944 events. 2413/3944 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 22362 event pairs, 1044 based on Foata normal form. 241/2921 useless extension candidates. Maximal degree in co-relation 1541. Up to 3870 conditions per place. [2023-08-27 11:32:51,302 INFO L140 encePairwiseOnDemand]: 343/360 looper letters, 51 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-27 11:32:51,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 240 flow [2023-08-27 11:32:51,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:32:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:32:51,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 542 transitions. [2023-08-27 11:32:51,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018518518518519 [2023-08-27 11:32:51,304 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 542 transitions. [2023-08-27 11:32:51,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 542 transitions. [2023-08-27 11:32:51,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:51,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 542 transitions. [2023-08-27 11:32:51,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,307 INFO L175 Difference]: Start difference. First operand has 51 places, 62 transitions, 142 flow. Second operand 3 states and 542 transitions. [2023-08-27 11:32:51,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 240 flow [2023-08-27 11:32:51,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:32:51,310 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 132 flow [2023-08-27 11:32:51,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-08-27 11:32:51,313 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-08-27 11:32:51,313 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 132 flow [2023-08-27 11:32:51,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:51,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:32:51,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 11:32:51,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-27 11:32:51,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:51,314 INFO L85 PathProgramCache]: Analyzing trace with hash -863602185, now seen corresponding path program 1 times [2023-08-27 11:32:51,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:51,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771759537] [2023-08-27 11:32:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:51,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:51,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:51,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771759537] [2023-08-27 11:32:51,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771759537] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:51,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:51,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:32:51,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529944906] [2023-08-27 11:32:51,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:51,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:32:51,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:51,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:32:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:32:51,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 360 [2023-08-27 11:32:51,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:51,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 360 [2023-08-27 11:32:51,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:51,675 INFO L124 PetriNetUnfolderBase]: 2834/4764 cut-off events. [2023-08-27 11:32:51,675 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2023-08-27 11:32:51,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9582 conditions, 4764 events. 2834/4764 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 26090 event pairs, 1243 based on Foata normal form. 0/3513 useless extension candidates. Maximal degree in co-relation 9532. Up to 3101 conditions per place. [2023-08-27 11:32:51,694 INFO L140 encePairwiseOnDemand]: 353/360 looper letters, 66 selfloop transitions, 2 changer transitions 2/74 dead transitions. [2023-08-27 11:32:51,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 324 flow [2023-08-27 11:32:51,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:32:51,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:32:51,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-08-27 11:32:51,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064814814814815 [2023-08-27 11:32:51,696 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-08-27 11:32:51,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-08-27 11:32:51,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:51,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-08-27 11:32:51,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,699 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 132 flow. Second operand 3 states and 547 transitions. [2023-08-27 11:32:51,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 324 flow [2023-08-27 11:32:51,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:32:51,703 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 144 flow [2023-08-27 11:32:51,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-08-27 11:32:51,704 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-08-27 11:32:51,704 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 144 flow [2023-08-27 11:32:51,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:51,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:51,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 11:32:51,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-27 11:32:51,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:51,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1229507393, now seen corresponding path program 1 times [2023-08-27 11:32:51,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:51,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209984920] [2023-08-27 11:32:51,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:51,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:51,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:51,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209984920] [2023-08-27 11:32:51,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209984920] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:51,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133120137] [2023-08-27 11:32:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:51,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:51,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:51,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:32:51,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 11:32:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:51,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:32:51,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:51,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:51,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133120137] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:51,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:51,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:32:51,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830213472] [2023-08-27 11:32:51,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:51,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:32:51,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:51,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:32:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:32:51,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 360 [2023-08-27 11:32:51,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 144 flow. Second operand has 7 states, 7 states have (on average 159.14285714285714) internal successors, (1114), 7 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:51,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 360 [2023-08-27 11:32:51,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:51,914 INFO L124 PetriNetUnfolderBase]: 220/391 cut-off events. [2023-08-27 11:32:51,914 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 11:32:51,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 391 events. 220/391 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1462 event pairs, 0 based on Foata normal form. 42/397 useless extension candidates. Maximal degree in co-relation 871. Up to 192 conditions per place. [2023-08-27 11:32:51,915 INFO L140 encePairwiseOnDemand]: 355/360 looper letters, 29 selfloop transitions, 3 changer transitions 12/45 dead transitions. [2023-08-27 11:32:51,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 45 transitions, 197 flow [2023-08-27 11:32:51,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:32:51,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:32:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 989 transitions. [2023-08-27 11:32:51,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45787037037037037 [2023-08-27 11:32:51,918 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 989 transitions. [2023-08-27 11:32:51,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 989 transitions. [2023-08-27 11:32:51,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:51,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 989 transitions. [2023-08-27 11:32:51,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 360.0) internal successors, (2520), 7 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,923 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 360.0) internal successors, (2520), 7 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,923 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 144 flow. Second operand 6 states and 989 transitions. [2023-08-27 11:32:51,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 45 transitions, 197 flow [2023-08-27 11:32:51,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 45 transitions, 195 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:32:51,924 INFO L231 Difference]: Finished difference. Result has 30 places, 17 transitions, 55 flow [2023-08-27 11:32:51,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=55, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2023-08-27 11:32:51,925 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -21 predicate places. [2023-08-27 11:32:51,925 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 55 flow [2023-08-27 11:32:51,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 159.14285714285714) internal successors, (1114), 7 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:51,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:51,925 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:32:51,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 11:32:52,129 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,SelfDestructingSolverStorable6 [2023-08-27 11:32:52,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-27 11:32:52,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:52,133 INFO L85 PathProgramCache]: Analyzing trace with hash 539475169, now seen corresponding path program 1 times [2023-08-27 11:32:52,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:52,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27064129] [2023-08-27 11:32:52,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:52,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:52,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:52,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27064129] [2023-08-27 11:32:52,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27064129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:52,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:52,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:32:52,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059012599] [2023-08-27 11:32:52,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:52,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:32:52,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:52,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:32:52,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:32:52,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 360 [2023-08-27 11:32:52,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:52,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:52,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 360 [2023-08-27 11:32:52,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:52,217 INFO L124 PetriNetUnfolderBase]: 40/101 cut-off events. [2023-08-27 11:32:52,217 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-08-27 11:32:52,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 101 events. 40/101 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 271 event pairs, 40 based on Foata normal form. 36/137 useless extension candidates. Maximal degree in co-relation 227. Up to 96 conditions per place. [2023-08-27 11:32:52,217 INFO L140 encePairwiseOnDemand]: 358/360 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2023-08-27 11:32:52,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 79 flow [2023-08-27 11:32:52,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:32:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:32:52,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-27 11:32:52,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45092592592592595 [2023-08-27 11:32:52,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-27 11:32:52,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-27 11:32:52,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:52,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-27 11:32:52,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:52,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:52,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:52,224 INFO L175 Difference]: Start difference. First operand has 30 places, 17 transitions, 55 flow. Second operand 3 states and 487 transitions. [2023-08-27 11:32:52,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 79 flow [2023-08-27 11:32:52,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 16 transitions, 73 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 11:32:52,224 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2023-08-27 11:32:52,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2023-08-27 11:32:52,225 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -26 predicate places. [2023-08-27 11:32:52,225 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2023-08-27 11:32:52,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:52,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-08-27 11:32:52,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-27 11:32:52,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (10 of 13 remaining) [2023-08-27 11:32:52,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (9 of 13 remaining) [2023-08-27 11:32:52,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-27 11:32:52,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-27 11:32:52,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (6 of 13 remaining) [2023-08-27 11:32:52,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-27 11:32:52,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-27 11:32:52,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-27 11:32:52,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-27 11:32:52,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-27 11:32:52,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-27 11:32:52,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 11:32:52,226 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-27 11:32:52,227 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:32:52,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 188 transitions, 394 flow [2023-08-27 11:32:52,252 INFO L124 PetriNetUnfolderBase]: 45/395 cut-off events. [2023-08-27 11:32:52,252 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:32:52,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 395 events. 45/395 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1518 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 249. Up to 9 conditions per place. [2023-08-27 11:32:52,254 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 188 transitions, 394 flow [2023-08-27 11:32:52,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 188 transitions, 394 flow [2023-08-27 11:32:52,255 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:32:52,255 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 188 transitions, 394 flow [2023-08-27 11:32:52,256 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 188 transitions, 394 flow [2023-08-27 11:32:52,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 188 transitions, 394 flow [2023-08-27 11:32:52,279 INFO L124 PetriNetUnfolderBase]: 45/395 cut-off events. [2023-08-27 11:32:52,279 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:32:52,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 395 events. 45/395 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1518 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 249. Up to 9 conditions per place. [2023-08-27 11:32:52,285 INFO L119 LiptonReduction]: Number of co-enabled transitions 11184 [2023-08-27 11:32:55,184 INFO L134 LiptonReduction]: Checked pairs total: 17288 [2023-08-27 11:32:55,184 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-08-27 11:32:55,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:32:55,189 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;@62d1ad62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:32:55,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:32:55,193 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:32:55,193 INFO L124 PetriNetUnfolderBase]: 18/82 cut-off events. [2023-08-27 11:32:55,193 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 11:32:55,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:55,193 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 11:32:55,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:32:55,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:55,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1533507201, now seen corresponding path program 1 times [2023-08-27 11:32:55,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:55,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449983960] [2023-08-27 11:32:55,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:55,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:32:55,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:32:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:32:55,241 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:32:55,241 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:32:55,241 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:32:55,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 11:32:55,241 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:32:55,241 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:32:55,241 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:32:55,241 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 11:32:55,261 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 11:32:55,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 214 transitions, 458 flow [2023-08-27 11:32:55,291 INFO L124 PetriNetUnfolderBase]: 68/584 cut-off events. [2023-08-27 11:32:55,292 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:32:55,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 584 events. 68/584 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2475 event pairs, 1 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 403. Up to 16 conditions per place. [2023-08-27 11:32:55,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 214 transitions, 458 flow [2023-08-27 11:32:55,297 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 214 transitions, 458 flow [2023-08-27 11:32:55,297 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:32:55,297 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 214 transitions, 458 flow [2023-08-27 11:32:55,297 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 214 transitions, 458 flow [2023-08-27 11:32:55,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 214 transitions, 458 flow [2023-08-27 11:32:55,329 INFO L124 PetriNetUnfolderBase]: 68/584 cut-off events. [2023-08-27 11:32:55,329 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:32:55,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 584 events. 68/584 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2475 event pairs, 1 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 403. Up to 16 conditions per place. [2023-08-27 11:32:55,343 INFO L119 LiptonReduction]: Number of co-enabled transitions 18720 [2023-08-27 11:32:58,185 INFO L134 LiptonReduction]: Checked pairs total: 31950 [2023-08-27 11:32:58,185 INFO L136 LiptonReduction]: Total number of compositions: 201 [2023-08-27 11:32:58,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:32:58,187 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;@62d1ad62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:32:58,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-27 11:32:58,188 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:32:58,188 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2023-08-27 11:32:58,188 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:32:58,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:58,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:32:58,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONASSERT (and 11 more)] === [2023-08-27 11:32:58,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:58,189 INFO L85 PathProgramCache]: Analyzing trace with hash 53738169, now seen corresponding path program 1 times [2023-08-27 11:32:58,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:58,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36243028] [2023-08-27 11:32:58,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:58,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:58,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:58,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36243028] [2023-08-27 11:32:58,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36243028] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:58,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:58,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:32:58,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748807655] [2023-08-27 11:32:58,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:58,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:32:58,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:58,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:32:58,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:32:58,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 415 [2023-08-27 11:32:58,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 74 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:58,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:58,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 415 [2023-08-27 11:32:58,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:59,867 INFO L124 PetriNetUnfolderBase]: 22510/32097 cut-off events. [2023-08-27 11:32:59,868 INFO L125 PetriNetUnfolderBase]: For 717/717 co-relation queries the response was YES. [2023-08-27 11:32:59,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64383 conditions, 32097 events. 22510/32097 cut-off events. For 717/717 co-relation queries the response was YES. Maximal size of possible extension queue 1183. Compared 205117 event pairs, 14294 based on Foata normal form. 2870/25523 useless extension candidates. Maximal degree in co-relation 7875. Up to 31805 conditions per place. [2023-08-27 11:33:00,017 INFO L140 encePairwiseOnDemand]: 395/415 looper letters, 56 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-27 11:33:00,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 64 transitions, 274 flow [2023-08-27 11:33:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:33:00,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:33:00,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 607 transitions. [2023-08-27 11:33:00,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875502008032129 [2023-08-27 11:33:00,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 607 transitions. [2023-08-27 11:33:00,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 607 transitions. [2023-08-27 11:33:00,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:00,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 607 transitions. [2023-08-27 11:33:00,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:00,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:00,022 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:00,022 INFO L175 Difference]: Start difference. First operand has 61 places, 74 transitions, 178 flow. Second operand 3 states and 607 transitions. [2023-08-27 11:33:00,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 64 transitions, 274 flow [2023-08-27 11:33:00,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:33:00,026 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 160 flow [2023-08-27 11:33:00,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-08-27 11:33:00,027 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2023-08-27 11:33:00,027 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 160 flow [2023-08-27 11:33:00,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:00,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:00,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:33:00,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 11:33:00,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONASSERT (and 11 more)] === [2023-08-27 11:33:00,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:00,028 INFO L85 PathProgramCache]: Analyzing trace with hash 82904034, now seen corresponding path program 1 times [2023-08-27 11:33:00,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:00,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807401678] [2023-08-27 11:33:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:00,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:33:00,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:00,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807401678] [2023-08-27 11:33:00,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807401678] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:33:00,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:33:00,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:33:00,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259504670] [2023-08-27 11:33:00,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:33:00,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:33:00,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:00,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:33:00,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:33:00,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 415 [2023-08-27 11:33:00,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:00,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:00,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 415 [2023-08-27 11:33:00,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:01,934 INFO L124 PetriNetUnfolderBase]: 25412/37101 cut-off events. [2023-08-27 11:33:01,935 INFO L125 PetriNetUnfolderBase]: For 1142/1142 co-relation queries the response was YES. [2023-08-27 11:33:01,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74655 conditions, 37101 events. 25412/37101 cut-off events. For 1142/1142 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 237832 event pairs, 10738 based on Foata normal form. 0/28227 useless extension candidates. Maximal degree in co-relation 74609. Up to 25389 conditions per place. [2023-08-27 11:33:02,084 INFO L140 encePairwiseOnDemand]: 407/415 looper letters, 78 selfloop transitions, 2 changer transitions 2/87 dead transitions. [2023-08-27 11:33:02,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 389 flow [2023-08-27 11:33:02,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:33:02,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:33:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 614 transitions. [2023-08-27 11:33:02,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931726907630522 [2023-08-27 11:33:02,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 614 transitions. [2023-08-27 11:33:02,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 614 transitions. [2023-08-27 11:33:02,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:02,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 614 transitions. [2023-08-27 11:33:02,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:02,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:02,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:02,089 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 160 flow. Second operand 3 states and 614 transitions. [2023-08-27 11:33:02,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 389 flow [2023-08-27 11:33:02,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:33:02,091 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 172 flow [2023-08-27 11:33:02,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-27 11:33:02,092 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2023-08-27 11:33:02,092 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 172 flow [2023-08-27 11:33:02,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:02,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:02,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:33:02,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 11:33:02,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONASSERT (and 11 more)] === [2023-08-27 11:33:02,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:02,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2076045417, now seen corresponding path program 1 times [2023-08-27 11:33:02,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:02,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395059052] [2023-08-27 11:33:02,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:02,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:33:02,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:02,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395059052] [2023-08-27 11:33:02,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395059052] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:33:02,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221020106] [2023-08-27 11:33:02,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:02,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:33:02,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:33:02,125 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:33:02,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 11:33:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:02,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:33:02,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:33:02,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:33:02,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:33:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:33:02,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221020106] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:33:02,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:33:02,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:33:02,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80777813] [2023-08-27 11:33:02,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:33:02,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:33:02,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:02,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:33:02,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:33:02,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 415 [2023-08-27 11:33:02,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 172 flow. Second operand has 7 states, 7 states have (on average 178.14285714285714) internal successors, (1247), 7 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:02,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:02,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 415 [2023-08-27 11:33:02,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:02,383 INFO L124 PetriNetUnfolderBase]: 1805/2699 cut-off events. [2023-08-27 11:33:02,383 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2023-08-27 11:33:02,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5933 conditions, 2699 events. 1805/2699 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12724 event pairs, 0 based on Foata normal form. 215/2703 useless extension candidates. Maximal degree in co-relation 5921. Up to 1248 conditions per place. [2023-08-27 11:33:02,392 INFO L140 encePairwiseOnDemand]: 410/415 looper letters, 47 selfloop transitions, 5 changer transitions 16/70 dead transitions. [2023-08-27 11:33:02,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 70 transitions, 306 flow [2023-08-27 11:33:02,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:33:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:33:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1305 transitions. [2023-08-27 11:33:02,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44922547332185886 [2023-08-27 11:33:02,395 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1305 transitions. [2023-08-27 11:33:02,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1305 transitions. [2023-08-27 11:33:02,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:02,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1305 transitions. [2023-08-27 11:33:02,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 186.42857142857142) internal successors, (1305), 7 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:02,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 415.0) internal successors, (3320), 8 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:02,401 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 415.0) internal successors, (3320), 8 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:02,401 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 172 flow. Second operand 7 states and 1305 transitions. [2023-08-27 11:33:02,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 70 transitions, 306 flow [2023-08-27 11:33:02,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 70 transitions, 302 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 11:33:02,402 INFO L231 Difference]: Finished difference. Result has 39 places, 25 transitions, 84 flow [2023-08-27 11:33:02,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=84, PETRI_PLACES=39, PETRI_TRANSITIONS=25} [2023-08-27 11:33:02,403 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -22 predicate places. [2023-08-27 11:33:02,403 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 25 transitions, 84 flow [2023-08-27 11:33:02,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 178.14285714285714) internal successors, (1247), 7 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:02,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:02,404 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:33:02,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 11:33:02,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:33:02,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONASSERT (and 11 more)] === [2023-08-27 11:33:02,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:02,608 INFO L85 PathProgramCache]: Analyzing trace with hash -67751162, now seen corresponding path program 1 times [2023-08-27 11:33:02,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:02,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825490460] [2023-08-27 11:33:02,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:02,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:02,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:33:02,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:02,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825490460] [2023-08-27 11:33:02,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825490460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:33:02,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:33:02,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:33:02,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053183016] [2023-08-27 11:33:02,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:33:02,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:33:02,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:02,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:33:02,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:33:02,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 415 [2023-08-27 11:33:02,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:02,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:02,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 415 [2023-08-27 11:33:02,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:02,682 INFO L124 PetriNetUnfolderBase]: 424/738 cut-off events. [2023-08-27 11:33:02,683 INFO L125 PetriNetUnfolderBase]: For 742/742 co-relation queries the response was YES. [2023-08-27 11:33:02,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1636 conditions, 738 events. 424/738 cut-off events. For 742/742 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3159 event pairs, 424 based on Foata normal form. 180/917 useless extension candidates. Maximal degree in co-relation 1624. Up to 711 conditions per place. [2023-08-27 11:33:02,684 INFO L140 encePairwiseOnDemand]: 413/415 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-08-27 11:33:02,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 23 transitions, 114 flow [2023-08-27 11:33:02,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:33:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:33:02,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 549 transitions. [2023-08-27 11:33:02,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44096385542168676 [2023-08-27 11:33:02,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 549 transitions. [2023-08-27 11:33:02,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 549 transitions. [2023-08-27 11:33:02,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:02,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 549 transitions. [2023-08-27 11:33:02,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:02,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:02,689 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:02,690 INFO L175 Difference]: Start difference. First operand has 39 places, 25 transitions, 84 flow. Second operand 3 states and 549 transitions. [2023-08-27 11:33:02,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 23 transitions, 114 flow [2023-08-27 11:33:02,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 106 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 11:33:02,691 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-08-27 11:33:02,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2023-08-27 11:33:02,691 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -27 predicate places. [2023-08-27 11:33:02,691 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-08-27 11:33:02,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:02,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-08-27 11:33:02,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-27 11:33:02,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (11 of 14 remaining) [2023-08-27 11:33:02,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-27 11:33:02,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-08-27 11:33:02,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (8 of 14 remaining) [2023-08-27 11:33:02,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (7 of 14 remaining) [2023-08-27 11:33:02,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-08-27 11:33:02,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-08-27 11:33:02,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-08-27 11:33:02,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (3 of 14 remaining) [2023-08-27 11:33:02,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-27 11:33:02,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-27 11:33:02,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-27 11:33:02,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 11:33:02,693 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-27 11:33:02,693 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:33:02,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 214 transitions, 458 flow [2023-08-27 11:33:02,815 INFO L124 PetriNetUnfolderBase]: 68/584 cut-off events. [2023-08-27 11:33:02,816 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:33:02,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 584 events. 68/584 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2475 event pairs, 1 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 403. Up to 16 conditions per place. [2023-08-27 11:33:02,818 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 214 transitions, 458 flow [2023-08-27 11:33:02,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 214 transitions, 458 flow [2023-08-27 11:33:02,819 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:33:02,819 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 214 transitions, 458 flow [2023-08-27 11:33:02,820 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 214 transitions, 458 flow [2023-08-27 11:33:02,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 214 transitions, 458 flow [2023-08-27 11:33:02,849 INFO L124 PetriNetUnfolderBase]: 68/584 cut-off events. [2023-08-27 11:33:02,849 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:33:02,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 584 events. 68/584 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2475 event pairs, 1 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 403. Up to 16 conditions per place. [2023-08-27 11:33:02,857 INFO L119 LiptonReduction]: Number of co-enabled transitions 18720 [2023-08-27 11:33:05,834 INFO L134 LiptonReduction]: Checked pairs total: 32192 [2023-08-27 11:33:05,834 INFO L136 LiptonReduction]: Total number of compositions: 204 [2023-08-27 11:33:05,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:33:05,835 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62d1ad62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:33:05,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:33:05,840 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:33:05,840 INFO L124 PetriNetUnfolderBase]: 32/135 cut-off events. [2023-08-27 11:33:05,840 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 11:33:05,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:05,840 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 11:33:05,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:33:05,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:05,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2066436110, now seen corresponding path program 1 times [2023-08-27 11:33:05,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:05,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018642914] [2023-08-27 11:33:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:05,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:33:05,873 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:33:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:33:05,888 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:33:05,888 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:33:05,888 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:33:05,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 11:33:05,888 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:33:05,890 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:33:05,890 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:33:05,890 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 11:33:05,906 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 11:33:05,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 240 transitions, 524 flow [2023-08-27 11:33:05,969 INFO L124 PetriNetUnfolderBase]: 103/857 cut-off events. [2023-08-27 11:33:05,969 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 11:33:05,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 857 events. 103/857 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3986 event pairs, 6 based on Foata normal form. 0/682 useless extension candidates. Maximal degree in co-relation 604. Up to 32 conditions per place. [2023-08-27 11:33:05,975 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 240 transitions, 524 flow [2023-08-27 11:33:05,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 240 transitions, 524 flow [2023-08-27 11:33:05,979 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:33:05,979 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 240 transitions, 524 flow [2023-08-27 11:33:05,979 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 240 transitions, 524 flow [2023-08-27 11:33:05,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 240 transitions, 524 flow [2023-08-27 11:33:06,028 INFO L124 PetriNetUnfolderBase]: 103/857 cut-off events. [2023-08-27 11:33:06,028 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 11:33:06,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 857 events. 103/857 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3986 event pairs, 6 based on Foata normal form. 0/682 useless extension candidates. Maximal degree in co-relation 604. Up to 32 conditions per place. [2023-08-27 11:33:06,045 INFO L119 LiptonReduction]: Number of co-enabled transitions 27552 [2023-08-27 11:33:08,779 INFO L134 LiptonReduction]: Checked pairs total: 46146 [2023-08-27 11:33:08,780 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-08-27 11:33:08,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:33:08,781 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;@62d1ad62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:33:08,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-27 11:33:08,782 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:33:08,782 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2023-08-27 11:33:08,782 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:33:08,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:08,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:33:08,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 11:33:08,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash 74987826, now seen corresponding path program 1 times [2023-08-27 11:33:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:08,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499995907] [2023-08-27 11:33:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:08,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:33:08,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:08,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499995907] [2023-08-27 11:33:08,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499995907] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:33:08,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:33:08,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:33:08,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181679679] [2023-08-27 11:33:08,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:33:08,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:33:08,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:08,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:33:08,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:33:08,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 460 [2023-08-27 11:33:08,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 88 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:08,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:08,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 460 [2023-08-27 11:33:08,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:22,548 INFO L124 PetriNetUnfolderBase]: 194078/267100 cut-off events. [2023-08-27 11:33:22,548 INFO L125 PetriNetUnfolderBase]: For 9137/9137 co-relation queries the response was YES. [2023-08-27 11:33:22,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527289 conditions, 267100 events. 194078/267100 cut-off events. For 9137/9137 co-relation queries the response was YES. Maximal size of possible extension queue 9599. Compared 2087751 event pairs, 138660 based on Foata normal form. 53728/230916 useless extension candidates. Maximal degree in co-relation 67737. Up to 255063 conditions per place. [2023-08-27 11:33:23,780 INFO L140 encePairwiseOnDemand]: 436/460 looper letters, 64 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-27 11:33:23,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 75 transitions, 326 flow [2023-08-27 11:33:23,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:33:23,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:33:23,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-08-27 11:33:23,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48985507246376814 [2023-08-27 11:33:23,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-08-27 11:33:23,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-08-27 11:33:23,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:23,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-08-27 11:33:23,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:23,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:23,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:23,803 INFO L175 Difference]: Start difference. First operand has 72 places, 88 transitions, 220 flow. Second operand 3 states and 676 transitions. [2023-08-27 11:33:23,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 75 transitions, 326 flow [2023-08-27 11:33:23,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 326 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:33:23,807 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 194 flow [2023-08-27 11:33:23,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2023-08-27 11:33:23,807 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2023-08-27 11:33:23,808 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 194 flow [2023-08-27 11:33:23,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:23,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:23,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:33:23,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 11:33:23,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 11:33:23,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:23,808 INFO L85 PathProgramCache]: Analyzing trace with hash -947657560, now seen corresponding path program 1 times [2023-08-27 11:33:23,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:23,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533053038] [2023-08-27 11:33:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:23,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:33:23,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:23,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533053038] [2023-08-27 11:33:23,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533053038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:33:23,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:33:23,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:33:23,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992103024] [2023-08-27 11:33:23,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:33:23,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:33:23,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:23,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:33:23,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:33:23,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 460 [2023-08-27 11:33:23,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:23,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:23,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 460 [2023-08-27 11:33:23,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:39,687 INFO L124 PetriNetUnfolderBase]: 214764/300576 cut-off events. [2023-08-27 11:33:39,687 INFO L125 PetriNetUnfolderBase]: For 8494/8494 co-relation queries the response was YES. [2023-08-27 11:33:40,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597567 conditions, 300576 events. 214764/300576 cut-off events. For 8494/8494 co-relation queries the response was YES. Maximal size of possible extension queue 8756. Compared 2360152 event pairs, 102329 based on Foata normal form. 0/220962 useless extension candidates. Maximal degree in co-relation 597520. Up to 197995 conditions per place. [2023-08-27 11:33:41,291 INFO L140 encePairwiseOnDemand]: 445/460 looper letters, 92 selfloop transitions, 4 changer transitions 1/105 dead transitions. [2023-08-27 11:33:41,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 105 transitions, 472 flow [2023-08-27 11:33:41,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:33:41,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:33:41,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2023-08-27 11:33:41,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985507246376812 [2023-08-27 11:33:41,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 688 transitions. [2023-08-27 11:33:41,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 688 transitions. [2023-08-27 11:33:41,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:41,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 688 transitions. [2023-08-27 11:33:41,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:41,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:41,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:41,311 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 194 flow. Second operand 3 states and 688 transitions. [2023-08-27 11:33:41,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 105 transitions, 472 flow [2023-08-27 11:33:41,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 105 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:33:41,317 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 232 flow [2023-08-27 11:33:41,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2023-08-27 11:33:41,317 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 4 predicate places. [2023-08-27 11:33:41,317 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 232 flow [2023-08-27 11:33:41,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:41,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:41,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:33:41,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 11:33:41,318 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 11:33:41,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:41,318 INFO L85 PathProgramCache]: Analyzing trace with hash -486231358, now seen corresponding path program 1 times [2023-08-27 11:33:41,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:41,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911769949] [2023-08-27 11:33:41,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:41,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:33:41,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:41,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911769949] [2023-08-27 11:33:41,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911769949] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:33:41,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632115095] [2023-08-27 11:33:41,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:41,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:33:41,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:33:41,369 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:33:41,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 11:33:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:41,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:33:41,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:33:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:33:41,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:33:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:33:41,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632115095] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:33:41,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:33:41,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:33:41,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90009978] [2023-08-27 11:33:41,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:33:41,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:33:41,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:41,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:33:41,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:33:41,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 460 [2023-08-27 11:33:41,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 197.14285714285714) internal successors, (1380), 7 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:41,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:41,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 460 [2023-08-27 11:33:41,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:55,577 INFO L124 PetriNetUnfolderBase]: 194375/272249 cut-off events. [2023-08-27 11:33:55,577 INFO L125 PetriNetUnfolderBase]: For 42586/42586 co-relation queries the response was YES. [2023-08-27 11:33:56,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612477 conditions, 272249 events. 194375/272249 cut-off events. For 42586/42586 co-relation queries the response was YES. Maximal size of possible extension queue 8217. Compared 2155143 event pairs, 47486 based on Foata normal form. 155/230343 useless extension candidates. Maximal degree in co-relation 98137. Up to 251925 conditions per place. [2023-08-27 11:33:56,881 INFO L140 encePairwiseOnDemand]: 454/460 looper letters, 117 selfloop transitions, 8 changer transitions 1/134 dead transitions. [2023-08-27 11:33:56,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 134 transitions, 624 flow [2023-08-27 11:33:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:33:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:33:56,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1494 transitions. [2023-08-27 11:33:56,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639751552795031 [2023-08-27 11:33:56,884 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1494 transitions. [2023-08-27 11:33:56,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1494 transitions. [2023-08-27 11:33:56,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:56,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1494 transitions. [2023-08-27 11:33:56,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 213.42857142857142) internal successors, (1494), 7 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:56,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 460.0) internal successors, (3680), 8 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:56,889 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 460.0) internal successors, (3680), 8 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:56,889 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 232 flow. Second operand 7 states and 1494 transitions. [2023-08-27 11:33:56,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 134 transitions, 624 flow [2023-08-27 11:33:57,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 134 transitions, 614 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:33:57,043 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 269 flow [2023-08-27 11:33:57,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2023-08-27 11:33:57,044 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 9 predicate places. [2023-08-27 11:33:57,044 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 269 flow [2023-08-27 11:33:57,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 197.14285714285714) internal successors, (1380), 7 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:57,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:57,044 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:33:57,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 11:33:57,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 11:33:57,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 11:33:57,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2106799585, now seen corresponding path program 1 times [2023-08-27 11:33:57,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:57,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129586607] [2023-08-27 11:33:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:57,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:33:57,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:57,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129586607] [2023-08-27 11:33:57,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129586607] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:33:57,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505646911] [2023-08-27 11:33:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:57,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:33:57,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:33:57,294 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:33:57,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 11:33:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:57,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 11:33:57,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:33:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:33:57,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:33:57,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505646911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:33:57,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:33:57,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 11:33:57,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385519855] [2023-08-27 11:33:57,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:33:57,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:33:57,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:57,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:33:57,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:33:57,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 460 [2023-08-27 11:33:57,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:57,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:57,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 460 [2023-08-27 11:33:57,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:34:11,361 INFO L124 PetriNetUnfolderBase]: 190220/266824 cut-off events. [2023-08-27 11:34:11,361 INFO L125 PetriNetUnfolderBase]: For 35915/35915 co-relation queries the response was YES. [2023-08-27 11:34:12,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595448 conditions, 266824 events. 190220/266824 cut-off events. For 35915/35915 co-relation queries the response was YES. Maximal size of possible extension queue 8216. Compared 2121148 event pairs, 49916 based on Foata normal form. 750/219488 useless extension candidates. Maximal degree in co-relation 67822. Up to 249415 conditions per place. [2023-08-27 11:34:12,853 INFO L140 encePairwiseOnDemand]: 456/460 looper letters, 80 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-08-27 11:34:12,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 91 transitions, 460 flow [2023-08-27 11:34:12,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:34:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:34:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 859 transitions. [2023-08-27 11:34:12,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668478260869565 [2023-08-27 11:34:12,855 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 859 transitions. [2023-08-27 11:34:12,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 859 transitions. [2023-08-27 11:34:12,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:34:12,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 859 transitions. [2023-08-27 11:34:12,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.75) internal successors, (859), 4 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:12,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:12,859 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:12,859 INFO L175 Difference]: Start difference. First operand has 81 places, 73 transitions, 269 flow. Second operand 4 states and 859 transitions. [2023-08-27 11:34:12,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 91 transitions, 460 flow [2023-08-27 11:34:12,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 91 transitions, 448 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-27 11:34:12,888 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 242 flow [2023-08-27 11:34:12,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2023-08-27 11:34:12,888 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2023-08-27 11:34:12,888 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 242 flow [2023-08-27 11:34:12,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:12,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:34:12,889 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:34:12,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-27 11:34:13,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 11:34:13,091 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 11:34:13,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:34:13,099 INFO L85 PathProgramCache]: Analyzing trace with hash -235035348, now seen corresponding path program 1 times [2023-08-27 11:34:13,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:34:13,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379343809] [2023-08-27 11:34:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:34:13,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:34:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:34:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-27 11:34:13,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:34:13,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379343809] [2023-08-27 11:34:13,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379343809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:34:13,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:34:13,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:34:13,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958175203] [2023-08-27 11:34:13,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:34:13,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:34:13,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:34:13,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:34:13,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:34:13,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 460 [2023-08-27 11:34:13,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:13,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:34:13,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 460 [2023-08-27 11:34:13,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:34:34,620 INFO L124 PetriNetUnfolderBase]: 273226/375798 cut-off events. [2023-08-27 11:34:34,620 INFO L125 PetriNetUnfolderBase]: For 39907/39907 co-relation queries the response was YES. [2023-08-27 11:34:35,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842356 conditions, 375798 events. 273226/375798 cut-off events. For 39907/39907 co-relation queries the response was YES. Maximal size of possible extension queue 13017. Compared 2981850 event pairs, 181654 based on Foata normal form. 0/311200 useless extension candidates. Maximal degree in co-relation 97451. Up to 270166 conditions per place. [2023-08-27 11:34:36,430 INFO L140 encePairwiseOnDemand]: 453/460 looper letters, 120 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2023-08-27 11:34:36,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 658 flow [2023-08-27 11:34:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:34:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:34:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 882 transitions. [2023-08-27 11:34:36,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47934782608695653 [2023-08-27 11:34:36,432 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 882 transitions. [2023-08-27 11:34:36,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 882 transitions. [2023-08-27 11:34:36,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:34:36,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 882 transitions. [2023-08-27 11:34:36,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.5) internal successors, (882), 4 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:36,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:36,435 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:36,435 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 242 flow. Second operand 4 states and 882 transitions. [2023-08-27 11:34:36,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 658 flow [2023-08-27 11:34:36,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 131 transitions, 650 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 11:34:36,476 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 266 flow [2023-08-27 11:34:36,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2023-08-27 11:34:36,477 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 9 predicate places. [2023-08-27 11:34:36,477 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 266 flow [2023-08-27 11:34:36,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:36,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:34:36,477 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:34:36,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 11:34:36,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 11:34:36,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:34:36,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1764748965, now seen corresponding path program 1 times [2023-08-27 11:34:36,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:34:36,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933174806] [2023-08-27 11:34:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:34:36,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:34:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:34:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:34:36,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:34:36,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933174806] [2023-08-27 11:34:36,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933174806] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:34:36,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702025700] [2023-08-27 11:34:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:34:36,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:34:36,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:34:36,533 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:34:36,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 11:34:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:34:36,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:34:36,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:34:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:34:36,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:34:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:34:36,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702025700] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:34:36,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:34:36,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 11:34:36,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944160944] [2023-08-27 11:34:36,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:34:36,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 11:34:36,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:34:36,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 11:34:36,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 11:34:36,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 460 [2023-08-27 11:34:36,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 266 flow. Second operand has 13 states, 13 states have (on average 197.6153846153846) internal successors, (2569), 13 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:36,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:34:36,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 460 [2023-08-27 11:34:36,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:34:37,151 INFO L124 PetriNetUnfolderBase]: 4238/6242 cut-off events. [2023-08-27 11:34:37,151 INFO L125 PetriNetUnfolderBase]: For 9110/9110 co-relation queries the response was YES. [2023-08-27 11:34:37,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14235 conditions, 6242 events. 4238/6242 cut-off events. For 9110/9110 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 33720 event pairs, 0 based on Foata normal form. 600/6841 useless extension candidates. Maximal degree in co-relation 14223. Up to 2842 conditions per place. [2023-08-27 11:34:37,162 INFO L140 encePairwiseOnDemand]: 457/460 looper letters, 0 selfloop transitions, 0 changer transitions 75/75 dead transitions. [2023-08-27 11:34:37,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 75 transitions, 345 flow [2023-08-27 11:34:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:34:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:34:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1436 transitions. [2023-08-27 11:34:37,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44596273291925465 [2023-08-27 11:34:37,165 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1436 transitions. [2023-08-27 11:34:37,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1436 transitions. [2023-08-27 11:34:37,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:34:37,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1436 transitions. [2023-08-27 11:34:37,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 205.14285714285714) internal successors, (1436), 7 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:37,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 460.0) internal successors, (3680), 8 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:37,170 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 460.0) internal successors, (3680), 8 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:37,170 INFO L175 Difference]: Start difference. First operand has 81 places, 73 transitions, 266 flow. Second operand 7 states and 1436 transitions. [2023-08-27 11:34:37,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 75 transitions, 345 flow [2023-08-27 11:34:37,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 75 transitions, 325 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-27 11:34:37,173 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-08-27 11:34:37,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-08-27 11:34:37,174 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -22 predicate places. [2023-08-27 11:34:37,174 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-08-27 11:34:37,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 197.6153846153846) internal successors, (2569), 13 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:37,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 15 remaining) [2023-08-27 11:34:37,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2023-08-27 11:34:37,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2023-08-27 11:34:37,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2023-08-27 11:34:37,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (10 of 15 remaining) [2023-08-27 11:34:37,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (9 of 15 remaining) [2023-08-27 11:34:37,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (8 of 15 remaining) [2023-08-27 11:34:37,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (7 of 15 remaining) [2023-08-27 11:34:37,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2023-08-27 11:34:37,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2023-08-27 11:34:37,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONASSERT (4 of 15 remaining) [2023-08-27 11:34:37,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2023-08-27 11:34:37,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2023-08-27 11:34:37,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2023-08-27 11:34:37,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2023-08-27 11:34:37,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-27 11:34:37,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:34:37,379 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-27 11:34:37,379 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:34:37,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 240 transitions, 524 flow [2023-08-27 11:34:37,426 INFO L124 PetriNetUnfolderBase]: 103/857 cut-off events. [2023-08-27 11:34:37,426 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 11:34:37,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 857 events. 103/857 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3986 event pairs, 6 based on Foata normal form. 0/682 useless extension candidates. Maximal degree in co-relation 604. Up to 32 conditions per place. [2023-08-27 11:34:37,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 240 transitions, 524 flow [2023-08-27 11:34:37,431 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 240 transitions, 524 flow [2023-08-27 11:34:37,431 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:34:37,431 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 240 transitions, 524 flow [2023-08-27 11:34:37,432 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 240 transitions, 524 flow [2023-08-27 11:34:37,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 240 transitions, 524 flow [2023-08-27 11:34:37,477 INFO L124 PetriNetUnfolderBase]: 103/857 cut-off events. [2023-08-27 11:34:37,477 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 11:34:37,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 857 events. 103/857 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3986 event pairs, 6 based on Foata normal form. 0/682 useless extension candidates. Maximal degree in co-relation 604. Up to 32 conditions per place. [2023-08-27 11:34:37,489 INFO L119 LiptonReduction]: Number of co-enabled transitions 27552 [2023-08-27 11:34:40,362 INFO L134 LiptonReduction]: Checked pairs total: 45021 [2023-08-27 11:34:40,362 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-08-27 11:34:40,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:34:40,367 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;@62d1ad62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:34:40,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:34:40,374 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:34:40,374 INFO L124 PetriNetUnfolderBase]: 47/195 cut-off events. [2023-08-27 11:34:40,374 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-27 11:34:40,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:34:40,374 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 11:34:40,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:34:40,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:34:40,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2029598679, now seen corresponding path program 1 times [2023-08-27 11:34:40,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:34:40,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264345017] [2023-08-27 11:34:40,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:34:40,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:34:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:34:40,391 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:34:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:34:40,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:34:40,403 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:34:40,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:34:40,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 11:34:40,403 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:34:40,403 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:34:40,403 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:34:40,403 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-27 11:34:40,417 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-27 11:34:40,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 266 transitions, 592 flow [2023-08-27 11:34:40,499 INFO L124 PetriNetUnfolderBase]: 166/1302 cut-off events. [2023-08-27 11:34:40,499 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 11:34:40,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 1302 events. 166/1302 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6776 event pairs, 23 based on Foata normal form. 0/1039 useless extension candidates. Maximal degree in co-relation 902. Up to 80 conditions per place. [2023-08-27 11:34:40,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 266 transitions, 592 flow [2023-08-27 11:34:40,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 266 transitions, 592 flow [2023-08-27 11:34:40,513 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:34:40,513 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 266 transitions, 592 flow [2023-08-27 11:34:40,513 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 266 transitions, 592 flow [2023-08-27 11:34:40,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 266 transitions, 592 flow [2023-08-27 11:34:40,645 INFO L124 PetriNetUnfolderBase]: 166/1302 cut-off events. [2023-08-27 11:34:40,645 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 11:34:40,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 1302 events. 166/1302 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6776 event pairs, 23 based on Foata normal form. 0/1039 useless extension candidates. Maximal degree in co-relation 902. Up to 80 conditions per place. [2023-08-27 11:34:40,670 INFO L119 LiptonReduction]: Number of co-enabled transitions 37680 [2023-08-27 11:34:43,220 INFO L134 LiptonReduction]: Checked pairs total: 64299 [2023-08-27 11:34:43,221 INFO L136 LiptonReduction]: Total number of compositions: 246 [2023-08-27 11:34:43,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:34:43,222 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;@62d1ad62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:34:43,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-27 11:34:43,223 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:34:43,223 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2023-08-27 11:34:43,223 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:34:43,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:34:43,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:34:43,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-27 11:34:43,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:34:43,223 INFO L85 PathProgramCache]: Analyzing trace with hash 98344677, now seen corresponding path program 1 times [2023-08-27 11:34:43,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:34:43,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072869620] [2023-08-27 11:34:43,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:34:43,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:34:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:34:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:34:43,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:34:43,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072869620] [2023-08-27 11:34:43,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072869620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:34:43,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:34:43,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:34:43,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287137040] [2023-08-27 11:34:43,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:34:43,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:34:43,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:34:43,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:34:43,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:34:43,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 512 [2023-08-27 11:34:43,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 100 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:43,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:34:43,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 512 [2023-08-27 11:34:43,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand