/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 21:30:41,186 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 21:30:41,250 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 21:30:41,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 21:30:41,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 21:30:41,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 21:30:41,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 21:30:41,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 21:30:41,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 21:30:41,289 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 21:30:41,289 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 21:30:41,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 21:30:41,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 21:30:41,290 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 21:30:41,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 21:30:41,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 21:30:41,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 21:30:41,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 21:30:41,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 21:30:41,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 21:30:41,291 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 21:30:41,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 21:30:41,292 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 21:30:41,292 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 21:30:41,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 21:30:41,293 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 21:30:41,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 21:30:41,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:30:41,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 21:30:41,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 21:30:41,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 21:30:41,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 21:30:41,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 21:30:41,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 21:30:41,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 21:30:41,295 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 21:30:41,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 21:30:41,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 21:30:41,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 21:30:41,552 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 21:30:41,553 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 21:30:41,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-26 21:30:42,616 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 21:30:42,840 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 21:30:42,840 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-26 21:30:42,850 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def4d5b0a/247f40e334c54a289b9d26ee35a7b9c4/FLAG75a9095c6 [2023-08-26 21:30:42,863 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def4d5b0a/247f40e334c54a289b9d26ee35a7b9c4 [2023-08-26 21:30:42,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 21:30:42,868 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 21:30:42,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 21:30:42,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 21:30:42,872 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 21:30:42,873 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:30:42" (1/1) ... [2023-08-26 21:30:42,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748b469a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:42, skipping insertion in model container [2023-08-26 21:30:42,874 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:30:42" (1/1) ... [2023-08-26 21:30:42,918 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 21:30:43,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:30:43,189 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 21:30:43,212 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-26 21:30:43,214 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-26 21:30:43,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:30:43,254 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:30:43,255 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:30:43,259 INFO L206 MainTranslator]: Completed translation [2023-08-26 21:30:43,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:43 WrapperNode [2023-08-26 21:30:43,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 21:30:43,261 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 21:30:43,261 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 21:30:43,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 21:30:43,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:43" (1/1) ... [2023-08-26 21:30:43,278 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:43" (1/1) ... [2023-08-26 21:30:43,293 INFO L138 Inliner]: procedures = 175, calls = 37, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 128 [2023-08-26 21:30:43,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 21:30:43,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 21:30:43,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 21:30:43,294 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 21:30:43,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:43" (1/1) ... [2023-08-26 21:30:43,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:43" (1/1) ... [2023-08-26 21:30:43,302 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:43" (1/1) ... [2023-08-26 21:30:43,303 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:43" (1/1) ... [2023-08-26 21:30:43,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:43" (1/1) ... [2023-08-26 21:30:43,310 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:43" (1/1) ... [2023-08-26 21:30:43,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:43" (1/1) ... [2023-08-26 21:30:43,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:43" (1/1) ... [2023-08-26 21:30:43,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 21:30:43,314 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 21:30:43,314 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 21:30:43,314 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 21:30:43,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:43" (1/1) ... [2023-08-26 21:30:43,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:30:43,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:30:43,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 21:30:43,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 21:30:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-08-26 21:30:43,369 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-08-26 21:30:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 21:30:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 21:30:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 21:30:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 21:30:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 21:30:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 21:30:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 21:30:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 21:30:43,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 21:30:43,370 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 21:30:43,447 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 21:30:43,448 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 21:30:43,572 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 21:30:43,598 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 21:30:43,598 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 21:30:43,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:30:43 BoogieIcfgContainer [2023-08-26 21:30:43,600 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 21:30:43,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 21:30:43,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 21:30:43,605 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 21:30:43,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:30:42" (1/3) ... [2023-08-26 21:30:43,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262fa8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:30:43, skipping insertion in model container [2023-08-26 21:30:43,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:43" (2/3) ... [2023-08-26 21:30:43,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262fa8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:30:43, skipping insertion in model container [2023-08-26 21:30:43,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:30:43" (3/3) ... [2023-08-26 21:30:43,606 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-08-26 21:30:43,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 21:30:43,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 21:30:43,617 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 21:30:43,659 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:30:43,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 114 transitions, 233 flow [2023-08-26 21:30:43,770 INFO L124 PetriNetUnfolderBase]: 7/113 cut-off events. [2023-08-26 21:30:43,771 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:30:43,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 113 events. 7/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-26 21:30:43,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 114 transitions, 233 flow [2023-08-26 21:30:43,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 113 transitions, 229 flow [2023-08-26 21:30:43,785 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:30:43,795 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 113 transitions, 229 flow [2023-08-26 21:30:43,797 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 113 transitions, 229 flow [2023-08-26 21:30:43,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 113 transitions, 229 flow [2023-08-26 21:30:43,830 INFO L124 PetriNetUnfolderBase]: 7/113 cut-off events. [2023-08-26 21:30:43,830 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:30:43,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 113 events. 7/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 152 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-26 21:30:43,837 INFO L119 LiptonReduction]: Number of co-enabled transitions 3596 [2023-08-26 21:30:46,012 INFO L134 LiptonReduction]: Checked pairs total: 5502 [2023-08-26 21:30:46,013 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-26 21:30:46,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:30:46,034 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;@51b70fbb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:30:46,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-26 21:30:46,043 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:30:46,044 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2023-08-26 21:30:46,044 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:30:46,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:46,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 21:30:46,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-26 21:30:46,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:46,062 INFO L85 PathProgramCache]: Analyzing trace with hash 14650771, now seen corresponding path program 1 times [2023-08-26 21:30:46,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:46,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404091587] [2023-08-26 21:30:46,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:46,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:46,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:46,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404091587] [2023-08-26 21:30:46,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404091587] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:46,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:46,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:30:46,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771379065] [2023-08-26 21:30:46,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:46,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:30:46,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:46,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:30:46,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:30:46,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-08-26 21:30:46,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:46,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-08-26 21:30:46,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:46,299 INFO L124 PetriNetUnfolderBase]: 132/253 cut-off events. [2023-08-26 21:30:46,299 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:30:46,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 253 events. 132/253 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 972 event pairs, 59 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 502. Up to 156 conditions per place. [2023-08-26 21:30:46,301 INFO L140 encePairwiseOnDemand]: 238/245 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-08-26 21:30:46,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 35 transitions, 143 flow [2023-08-26 21:30:46,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:30:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:30:46,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2023-08-26 21:30:46,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170068027210886 [2023-08-26 21:30:46,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2023-08-26 21:30:46,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2023-08-26 21:30:46,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:46,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2023-08-26 21:30:46,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,332 INFO L175 Difference]: Start difference. First operand has 24 places, 23 transitions, 49 flow. Second operand 3 states and 332 transitions. [2023-08-26 21:30:46,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 35 transitions, 143 flow [2023-08-26 21:30:46,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 35 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:30:46,335 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 74 flow [2023-08-26 21:30:46,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2023-08-26 21:30:46,339 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2023-08-26 21:30:46,340 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 74 flow [2023-08-26 21:30:46,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:46,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 21:30:46,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 21:30:46,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-26 21:30:46,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:46,345 INFO L85 PathProgramCache]: Analyzing trace with hash 14649870, now seen corresponding path program 1 times [2023-08-26 21:30:46,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:46,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379319020] [2023-08-26 21:30:46,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:46,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:46,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:46,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:46,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379319020] [2023-08-26 21:30:46,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379319020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:46,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:46,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:30:46,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140420185] [2023-08-26 21:30:46,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:46,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:30:46,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:46,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:30:46,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:30:46,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-08-26 21:30:46,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:46,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-08-26 21:30:46,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:46,457 INFO L124 PetriNetUnfolderBase]: 118/233 cut-off events. [2023-08-26 21:30:46,458 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-26 21:30:46,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 233 events. 118/233 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 921 event pairs, 34 based on Foata normal form. 11/189 useless extension candidates. Maximal degree in co-relation 517. Up to 191 conditions per place. [2023-08-26 21:30:46,459 INFO L140 encePairwiseOnDemand]: 236/245 looper letters, 35 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2023-08-26 21:30:46,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 198 flow [2023-08-26 21:30:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:30:46,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:30:46,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2023-08-26 21:30:46,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2023-08-26 21:30:46,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2023-08-26 21:30:46,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2023-08-26 21:30:46,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:46,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2023-08-26 21:30:46,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,463 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 74 flow. Second operand 3 states and 336 transitions. [2023-08-26 21:30:46,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 198 flow [2023-08-26 21:30:46,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 41 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:46,464 INFO L231 Difference]: Finished difference. Result has 28 places, 29 transitions, 126 flow [2023-08-26 21:30:46,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=28, PETRI_TRANSITIONS=29} [2023-08-26 21:30:46,465 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-08-26 21:30:46,465 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 29 transitions, 126 flow [2023-08-26 21:30:46,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:46,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 21:30:46,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 21:30:46,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-26 21:30:46,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:46,466 INFO L85 PathProgramCache]: Analyzing trace with hash 14651234, now seen corresponding path program 1 times [2023-08-26 21:30:46,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:46,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481724703] [2023-08-26 21:30:46,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:46,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:46,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:46,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481724703] [2023-08-26 21:30:46,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481724703] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:46,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:46,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:30:46,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801433690] [2023-08-26 21:30:46,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:46,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:30:46,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:46,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:30:46,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:30:46,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 245 [2023-08-26 21:30:46,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 29 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:46,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 245 [2023-08-26 21:30:46,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:46,578 INFO L124 PetriNetUnfolderBase]: 161/332 cut-off events. [2023-08-26 21:30:46,578 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2023-08-26 21:30:46,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889 conditions, 332 events. 161/332 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1574 event pairs, 56 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 875. Up to 194 conditions per place. [2023-08-26 21:30:46,580 INFO L140 encePairwiseOnDemand]: 241/245 looper letters, 49 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-08-26 21:30:46,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 53 transitions, 338 flow [2023-08-26 21:30:46,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:30:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:30:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-08-26 21:30:46,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2023-08-26 21:30:46,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-08-26 21:30:46,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-08-26 21:30:46,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:46,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-08-26 21:30:46,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,584 INFO L175 Difference]: Start difference. First operand has 28 places, 29 transitions, 126 flow. Second operand 3 states and 330 transitions. [2023-08-26 21:30:46,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 53 transitions, 338 flow [2023-08-26 21:30:46,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 53 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:46,587 INFO L231 Difference]: Finished difference. Result has 30 places, 30 transitions, 132 flow [2023-08-26 21:30:46,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=30, PETRI_TRANSITIONS=30} [2023-08-26 21:30:46,587 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2023-08-26 21:30:46,587 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 30 transitions, 132 flow [2023-08-26 21:30:46,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:46,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:30:46,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 21:30:46,588 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-26 21:30:46,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:46,589 INFO L85 PathProgramCache]: Analyzing trace with hash 454148247, now seen corresponding path program 1 times [2023-08-26 21:30:46,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:46,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546135852] [2023-08-26 21:30:46,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:46,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:46,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:46,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546135852] [2023-08-26 21:30:46,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546135852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:46,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:46,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:30:46,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221970745] [2023-08-26 21:30:46,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:46,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:30:46,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:46,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:30:46,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:30:46,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 245 [2023-08-26 21:30:46,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:46,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 245 [2023-08-26 21:30:46,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:46,662 INFO L124 PetriNetUnfolderBase]: 155/323 cut-off events. [2023-08-26 21:30:46,663 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-08-26 21:30:46,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 323 events. 155/323 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1569 event pairs, 74 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 858. Up to 265 conditions per place. [2023-08-26 21:30:46,666 INFO L140 encePairwiseOnDemand]: 243/245 looper letters, 38 selfloop transitions, 1 changer transitions 3/43 dead transitions. [2023-08-26 21:30:46,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 258 flow [2023-08-26 21:30:46,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:30:46,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:30:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2023-08-26 21:30:46,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43673469387755104 [2023-08-26 21:30:46,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2023-08-26 21:30:46,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2023-08-26 21:30:46,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:46,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2023-08-26 21:30:46,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,671 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,671 INFO L175 Difference]: Start difference. First operand has 30 places, 30 transitions, 132 flow. Second operand 3 states and 321 transitions. [2023-08-26 21:30:46,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 258 flow [2023-08-26 21:30:46,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:46,674 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 131 flow [2023-08-26 21:30:46,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-08-26 21:30:46,675 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2023-08-26 21:30:46,676 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 131 flow [2023-08-26 21:30:46,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:46,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 21:30:46,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 21:30:46,676 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-26 21:30:46,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:46,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1194575982, now seen corresponding path program 1 times [2023-08-26 21:30:46,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:46,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96837680] [2023-08-26 21:30:46,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:46,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:46,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:46,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96837680] [2023-08-26 21:30:46,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96837680] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:46,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:46,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:30:46,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774856719] [2023-08-26 21:30:46,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:46,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:30:46,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:46,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:30:46,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:30:46,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-08-26 21:30:46,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:46,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-08-26 21:30:46,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:46,853 INFO L124 PetriNetUnfolderBase]: 153/320 cut-off events. [2023-08-26 21:30:46,853 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-08-26 21:30:46,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 320 events. 153/320 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1535 event pairs, 10 based on Foata normal form. 14/287 useless extension candidates. Maximal degree in co-relation 843. Up to 190 conditions per place. [2023-08-26 21:30:46,858 INFO L140 encePairwiseOnDemand]: 235/245 looper letters, 37 selfloop transitions, 7 changer transitions 6/50 dead transitions. [2023-08-26 21:30:46,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 50 transitions, 284 flow [2023-08-26 21:30:46,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:30:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:30:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2023-08-26 21:30:46,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45102040816326533 [2023-08-26 21:30:46,860 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 442 transitions. [2023-08-26 21:30:46,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 442 transitions. [2023-08-26 21:30:46,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:46,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 442 transitions. [2023-08-26 21:30:46,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,864 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,864 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 131 flow. Second operand 4 states and 442 transitions. [2023-08-26 21:30:46,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 50 transitions, 284 flow [2023-08-26 21:30:46,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 50 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:30:46,867 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 147 flow [2023-08-26 21:30:46,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2023-08-26 21:30:46,869 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2023-08-26 21:30:46,870 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 147 flow [2023-08-26 21:30:46,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:46,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 21:30:46,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 21:30:46,870 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-26 21:30:46,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:46,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1194362515, now seen corresponding path program 1 times [2023-08-26 21:30:46,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:46,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588360912] [2023-08-26 21:30:46,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:46,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:46,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:46,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588360912] [2023-08-26 21:30:46,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588360912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:46,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:46,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:30:46,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191486603] [2023-08-26 21:30:46,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:46,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:30:46,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:46,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:30:46,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:30:46,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 245 [2023-08-26 21:30:46,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:46,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 245 [2023-08-26 21:30:46,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:46,946 INFO L124 PetriNetUnfolderBase]: 102/222 cut-off events. [2023-08-26 21:30:46,946 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2023-08-26 21:30:46,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 222 events. 102/222 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 995 event pairs, 43 based on Foata normal form. 13/217 useless extension candidates. Maximal degree in co-relation 689. Up to 186 conditions per place. [2023-08-26 21:30:46,947 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 30 selfloop transitions, 2 changer transitions 3/36 dead transitions. [2023-08-26 21:30:46,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 258 flow [2023-08-26 21:30:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:30:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:30:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2023-08-26 21:30:46,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340136054421769 [2023-08-26 21:30:46,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2023-08-26 21:30:46,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2023-08-26 21:30:46,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:46,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2023-08-26 21:30:46,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,950 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 147 flow. Second operand 3 states and 319 transitions. [2023-08-26 21:30:46,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 258 flow [2023-08-26 21:30:46,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 245 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:46,952 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 145 flow [2023-08-26 21:30:46,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2023-08-26 21:30:46,952 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2023-08-26 21:30:46,953 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 145 flow [2023-08-26 21:30:46,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:46,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:46,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 21:30:46,953 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-26 21:30:46,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:46,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1629468708, now seen corresponding path program 1 times [2023-08-26 21:30:46,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:46,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752740767] [2023-08-26 21:30:46,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:46,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:46,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:46,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752740767] [2023-08-26 21:30:46,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752740767] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:46,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:46,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:30:46,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387323611] [2023-08-26 21:30:46,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:46,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:30:46,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:46,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:30:46,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:30:46,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 245 [2023-08-26 21:30:46,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:46,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:46,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 245 [2023-08-26 21:30:46,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:47,074 INFO L124 PetriNetUnfolderBase]: 178/356 cut-off events. [2023-08-26 21:30:47,074 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2023-08-26 21:30:47,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 356 events. 178/356 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1690 event pairs, 34 based on Foata normal form. 27/350 useless extension candidates. Maximal degree in co-relation 1062. Up to 138 conditions per place. [2023-08-26 21:30:47,075 INFO L140 encePairwiseOnDemand]: 235/245 looper letters, 38 selfloop transitions, 14 changer transitions 6/58 dead transitions. [2023-08-26 21:30:47,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 58 transitions, 368 flow [2023-08-26 21:30:47,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:30:47,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:30:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 626 transitions. [2023-08-26 21:30:47,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42585034013605444 [2023-08-26 21:30:47,077 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 626 transitions. [2023-08-26 21:30:47,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 626 transitions. [2023-08-26 21:30:47,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:47,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 626 transitions. [2023-08-26 21:30:47,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.33333333333333) internal successors, (626), 6 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,081 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,081 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 145 flow. Second operand 6 states and 626 transitions. [2023-08-26 21:30:47,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 58 transitions, 368 flow [2023-08-26 21:30:47,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 58 transitions, 353 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 21:30:47,083 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 218 flow [2023-08-26 21:30:47,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-08-26 21:30:47,083 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-08-26 21:30:47,083 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 218 flow [2023-08-26 21:30:47,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:47,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:47,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 21:30:47,084 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-26 21:30:47,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:47,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1623064727, now seen corresponding path program 1 times [2023-08-26 21:30:47,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:47,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390080503] [2023-08-26 21:30:47,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:47,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:47,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:47,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:47,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390080503] [2023-08-26 21:30:47,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390080503] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:47,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:47,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:30:47,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822339985] [2023-08-26 21:30:47,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:47,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:30:47,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:47,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:30:47,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:30:47,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 245 [2023-08-26 21:30:47,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:47,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 245 [2023-08-26 21:30:47,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:47,179 INFO L124 PetriNetUnfolderBase]: 101/228 cut-off events. [2023-08-26 21:30:47,180 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2023-08-26 21:30:47,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 228 events. 101/228 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1047 event pairs, 12 based on Foata normal form. 35/238 useless extension candidates. Maximal degree in co-relation 729. Up to 122 conditions per place. [2023-08-26 21:30:47,181 INFO L140 encePairwiseOnDemand]: 236/245 looper letters, 23 selfloop transitions, 8 changer transitions 4/35 dead transitions. [2023-08-26 21:30:47,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 238 flow [2023-08-26 21:30:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:30:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:30:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 510 transitions. [2023-08-26 21:30:47,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4163265306122449 [2023-08-26 21:30:47,182 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 510 transitions. [2023-08-26 21:30:47,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 510 transitions. [2023-08-26 21:30:47,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:47,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 510 transitions. [2023-08-26 21:30:47,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,185 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,185 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 218 flow. Second operand 5 states and 510 transitions. [2023-08-26 21:30:47,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 238 flow [2023-08-26 21:30:47,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 35 transitions, 213 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-26 21:30:47,187 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 113 flow [2023-08-26 21:30:47,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2023-08-26 21:30:47,189 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 11 predicate places. [2023-08-26 21:30:47,189 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 113 flow [2023-08-26 21:30:47,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:47,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:47,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 21:30:47,189 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-26 21:30:47,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:47,190 INFO L85 PathProgramCache]: Analyzing trace with hash -489827015, now seen corresponding path program 1 times [2023-08-26 21:30:47,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:47,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204957403] [2023-08-26 21:30:47,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:47,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:47,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:47,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204957403] [2023-08-26 21:30:47,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204957403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:47,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:47,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:30:47,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768862904] [2023-08-26 21:30:47,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:47,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:30:47,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:47,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:30:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:30:47,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 245 [2023-08-26 21:30:47,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:47,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 245 [2023-08-26 21:30:47,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:47,298 INFO L124 PetriNetUnfolderBase]: 64/161 cut-off events. [2023-08-26 21:30:47,298 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2023-08-26 21:30:47,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 161 events. 64/161 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 715 event pairs, 2 based on Foata normal form. 8/150 useless extension candidates. Maximal degree in co-relation 455. Up to 82 conditions per place. [2023-08-26 21:30:47,299 INFO L140 encePairwiseOnDemand]: 240/245 looper letters, 20 selfloop transitions, 9 changer transitions 2/31 dead transitions. [2023-08-26 21:30:47,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 197 flow [2023-08-26 21:30:47,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:30:47,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:30:47,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 599 transitions. [2023-08-26 21:30:47,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40748299319727893 [2023-08-26 21:30:47,301 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 599 transitions. [2023-08-26 21:30:47,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 599 transitions. [2023-08-26 21:30:47,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:47,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 599 transitions. [2023-08-26 21:30:47,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.83333333333333) internal successors, (599), 6 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,304 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,304 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 113 flow. Second operand 6 states and 599 transitions. [2023-08-26 21:30:47,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 197 flow [2023-08-26 21:30:47,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 176 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-26 21:30:47,305 INFO L231 Difference]: Finished difference. Result has 31 places, 18 transitions, 98 flow [2023-08-26 21:30:47,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=98, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2023-08-26 21:30:47,306 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2023-08-26 21:30:47,307 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 98 flow [2023-08-26 21:30:47,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:47,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:47,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 21:30:47,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-26 21:30:47,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:47,308 INFO L85 PathProgramCache]: Analyzing trace with hash 21555636, now seen corresponding path program 1 times [2023-08-26 21:30:47,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:47,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452526203] [2023-08-26 21:30:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:47,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:47,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:47,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452526203] [2023-08-26 21:30:47,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452526203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:47,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:47,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:30:47,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465823667] [2023-08-26 21:30:47,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:47,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:30:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:30:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:30:47,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 245 [2023-08-26 21:30:47,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:47,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 245 [2023-08-26 21:30:47,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:47,381 INFO L124 PetriNetUnfolderBase]: 22/96 cut-off events. [2023-08-26 21:30:47,381 INFO L125 PetriNetUnfolderBase]: For 132/133 co-relation queries the response was YES. [2023-08-26 21:30:47,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 96 events. 22/96 cut-off events. For 132/133 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 454 event pairs, 6 based on Foata normal form. 11/95 useless extension candidates. Maximal degree in co-relation 296. Up to 55 conditions per place. [2023-08-26 21:30:47,382 INFO L140 encePairwiseOnDemand]: 241/245 looper letters, 16 selfloop transitions, 2 changer transitions 4/24 dead transitions. [2023-08-26 21:30:47,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 180 flow [2023-08-26 21:30:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:30:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:30:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2023-08-26 21:30:47,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-08-26 21:30:47,383 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2023-08-26 21:30:47,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2023-08-26 21:30:47,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:47,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2023-08-26 21:30:47,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,386 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,386 INFO L175 Difference]: Start difference. First operand has 31 places, 18 transitions, 98 flow. Second operand 4 states and 392 transitions. [2023-08-26 21:30:47,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 180 flow [2023-08-26 21:30:47,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 159 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 21:30:47,387 INFO L231 Difference]: Finished difference. Result has 30 places, 17 transitions, 89 flow [2023-08-26 21:30:47,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2023-08-26 21:30:47,388 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2023-08-26 21:30:47,388 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 89 flow [2023-08-26 21:30:47,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:30:47,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:47,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:47,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 21:30:47,388 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-26 21:30:47,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:47,389 INFO L85 PathProgramCache]: Analyzing trace with hash 30957978, now seen corresponding path program 1 times [2023-08-26 21:30:47,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:47,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137855605] [2023-08-26 21:30:47,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:47,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:30:47,399 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 21:30:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:30:47,425 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 21:30:47,425 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 21:30:47,426 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (9 of 10 remaining) [2023-08-26 21:30:47,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-08-26 21:30:47,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-08-26 21:30:47,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-08-26 21:30:47,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-08-26 21:30:47,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-08-26 21:30:47,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-08-26 21:30:47,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2023-08-26 21:30:47,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-08-26 21:30:47,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-08-26 21:30:47,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 21:30:47,428 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:47,432 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 21:30:47,432 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 21:30:47,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:30:47 BasicIcfg [2023-08-26 21:30:47,465 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 21:30:47,465 INFO L158 Benchmark]: Toolchain (without parser) took 4597.55ms. Allocated memory was 367.0MB in the beginning and 503.3MB in the end (delta: 136.3MB). Free memory was 341.9MB in the beginning and 318.0MB in the end (delta: 23.9MB). Peak memory consumption was 162.0MB. Max. memory is 16.0GB. [2023-08-26 21:30:47,465 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 367.0MB. Free memory is still 343.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 21:30:47,465 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.02ms. Allocated memory is still 367.0MB. Free memory was 341.4MB in the beginning and 321.7MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 21:30:47,465 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.38ms. Allocated memory is still 367.0MB. Free memory was 321.7MB in the beginning and 319.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:30:47,466 INFO L158 Benchmark]: Boogie Preprocessor took 19.49ms. Allocated memory is still 367.0MB. Free memory was 319.6MB in the beginning and 318.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:30:47,466 INFO L158 Benchmark]: RCFGBuilder took 286.02ms. Allocated memory is still 367.0MB. Free memory was 318.0MB in the beginning and 300.7MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-26 21:30:47,466 INFO L158 Benchmark]: TraceAbstraction took 3863.32ms. Allocated memory was 367.0MB in the beginning and 503.3MB in the end (delta: 136.3MB). Free memory was 300.2MB in the beginning and 318.0MB in the end (delta: -17.8MB). Peak memory consumption was 120.1MB. Max. memory is 16.0GB. [2023-08-26 21:30:47,467 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 367.0MB. Free memory is still 343.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 391.02ms. Allocated memory is still 367.0MB. Free memory was 341.4MB in the beginning and 321.7MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.38ms. Allocated memory is still 367.0MB. Free memory was 321.7MB in the beginning and 319.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.49ms. Allocated memory is still 367.0MB. Free memory was 319.6MB in the beginning and 318.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 286.02ms. Allocated memory is still 367.0MB. Free memory was 318.0MB in the beginning and 300.7MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 3863.32ms. Allocated memory was 367.0MB in the beginning and 503.3MB in the end (delta: 136.3MB). Free memory was 300.2MB in the beginning and 318.0MB in the end (delta: -17.8MB). Peak memory consumption was 120.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 110 PlacesBefore, 24 PlacesAfterwards, 113 TransitionsBefore, 23 TransitionsAfterwards, 3596 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 81 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 4 ChoiceCompositions, 131 TotalNumberOfCompositions, 5502 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4041, independent: 3898, independent conditional: 0, independent unconditional: 3898, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2317, independent: 2275, independent conditional: 0, independent unconditional: 2275, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4041, independent: 1623, independent conditional: 0, independent unconditional: 1623, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 2317, unknown conditional: 0, unknown unconditional: 2317] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 683]: assertion can be violated assertion can be violated We found a FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L756] 0 pthread_t t; [L757] 0 pendingIo = 1 [L758] 0 stoppingFlag = 0 [L759] 0 stoppingEvent = 0 [L760] 0 stopped = 0 [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, pthread_create(&t, 0, BCSP_PnpStop, 0)=-1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; [L726] CALL, EXPR 1 dec() [L709] 0 int lp = pendingIo; VAL [lp=1, lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; [L722] 1 return tmp; VAL [\result=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L712] EXPR 0 lp + 1 [L712] EXPR 0 pendingIo = lp + 1 [L707-L714] 0 { __VERIFIER_atomic_begin(); int lp = pendingIo; __VERIFIER_atomic_end(); __VERIFIER_atomic_begin(); pendingIo = lp + 1; __VERIFIER_atomic_end(); } [L715] 0 return 0; [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 [L729] 1 stoppingEvent = 1 [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) [L751] RET 1 assume_abort_if_not(lse) [L752] 1 stopped = 1 [L753] 1 return 0; [L736] COND TRUE 0 status == 0 [L737] 0 int local_assertion = !stopped; [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) [L690] CALL 0 reach_error() [L683] COND FALSE 0 !(0) [L683] 0 __assert_fail ("0", "assert.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: 719]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 137 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 151 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 151 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 526 IncrementalHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 0 mSDtfsCounter, 526 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=7, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-26 21:30:47,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...