/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 10:20:38,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 10:20:38,539 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 10:20:38,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 10:20:38,543 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 10:20:38,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 10:20:38,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 10:20:38,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 10:20:38,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 10:20:38,569 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 10:20:38,569 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 10:20:38,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 10:20:38,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 10:20:38,570 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 10:20:38,570 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 10:20:38,570 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 10:20:38,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 10:20:38,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 10:20:38,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 10:20:38,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 10:20:38,571 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 10:20:38,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 10:20:38,571 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 10:20:38,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 10:20:38,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 10:20:38,572 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 10:20:38,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 10:20:38,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:20:38,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 10:20:38,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 10:20:38,573 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 10:20:38,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 10:20:38,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 10:20:38,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 10:20:38,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 10:20:38,574 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 10:20:38,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 10:20:38,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 10:20:38,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 10:20:38,812 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 10:20:38,812 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 10:20:38,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-27 10:20:39,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 10:20:39,951 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 10:20:39,952 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-27 10:20:39,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/466032754/1549b1e6cc9a4c19b5674db7dcf757ac/FLAG6e3d7d293 [2023-08-27 10:20:39,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/466032754/1549b1e6cc9a4c19b5674db7dcf757ac [2023-08-27 10:20:39,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 10:20:39,975 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 10:20:39,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 10:20:39,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 10:20:39,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 10:20:39,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:20:39" (1/1) ... [2023-08-27 10:20:39,978 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1a6a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:39, skipping insertion in model container [2023-08-27 10:20:39,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:20:39" (1/1) ... [2023-08-27 10:20:40,003 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 10:20:40,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:20:40,257 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 10:20:40,282 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-27 10:20:40,283 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-27 10:20:40,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:20:40,316 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:20:40,317 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:20:40,321 INFO L206 MainTranslator]: Completed translation [2023-08-27 10:20:40,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:40 WrapperNode [2023-08-27 10:20:40,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 10:20:40,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 10:20:40,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 10:20:40,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 10:20:40,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:40" (1/1) ... [2023-08-27 10:20:40,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:40" (1/1) ... [2023-08-27 10:20:40,359 INFO L138 Inliner]: procedures = 175, calls = 37, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 128 [2023-08-27 10:20:40,359 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 10:20:40,360 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 10:20:40,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 10:20:40,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 10:20:40,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:40" (1/1) ... [2023-08-27 10:20:40,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:40" (1/1) ... [2023-08-27 10:20:40,366 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:40" (1/1) ... [2023-08-27 10:20:40,367 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:40" (1/1) ... [2023-08-27 10:20:40,385 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:40" (1/1) ... [2023-08-27 10:20:40,386 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:40" (1/1) ... [2023-08-27 10:20:40,387 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:40" (1/1) ... [2023-08-27 10:20:40,388 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:40" (1/1) ... [2023-08-27 10:20:40,389 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 10:20:40,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 10:20:40,390 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 10:20:40,390 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 10:20:40,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:40" (1/1) ... [2023-08-27 10:20:40,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:20:40,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 10:20:40,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 10:20:40,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 10:20:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-08-27 10:20:40,454 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-08-27 10:20:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 10:20:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 10:20:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 10:20:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 10:20:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 10:20:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 10:20:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 10:20:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 10:20:40,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 10:20:40,455 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 10:20:40,546 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 10:20:40,548 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 10:20:40,675 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 10:20:40,722 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 10:20:40,722 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 10:20:40,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:20:40 BoogieIcfgContainer [2023-08-27 10:20:40,724 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 10:20:40,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 10:20:40,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 10:20:40,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 10:20:40,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:20:39" (1/3) ... [2023-08-27 10:20:40,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7c9070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:20:40, skipping insertion in model container [2023-08-27 10:20:40,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:40" (2/3) ... [2023-08-27 10:20:40,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7c9070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:20:40, skipping insertion in model container [2023-08-27 10:20:40,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:20:40" (3/3) ... [2023-08-27 10:20:40,730 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-08-27 10:20:40,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 10:20:40,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 10:20:40,742 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 10:20:40,796 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 10:20:40,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 114 transitions, 233 flow [2023-08-27 10:20:40,935 INFO L124 PetriNetUnfolderBase]: 7/113 cut-off events. [2023-08-27 10:20:40,936 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:20:40,940 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. [2023-08-27 10:20:40,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 114 transitions, 233 flow [2023-08-27 10:20:40,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 113 transitions, 229 flow [2023-08-27 10:20:40,946 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 10:20:40,954 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 113 transitions, 229 flow [2023-08-27 10:20:40,956 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 113 transitions, 229 flow [2023-08-27 10:20:40,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 113 transitions, 229 flow [2023-08-27 10:20:40,987 INFO L124 PetriNetUnfolderBase]: 7/113 cut-off events. [2023-08-27 10:20:40,987 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:20:40,988 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. [2023-08-27 10:20:40,990 INFO L119 LiptonReduction]: Number of co-enabled transitions 3596 [2023-08-27 10:20:43,229 INFO L134 LiptonReduction]: Checked pairs total: 5502 [2023-08-27 10:20:43,229 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-27 10:20:43,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 10:20:43,249 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;@4369b949, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 10:20:43,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-27 10:20:43,251 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 10:20:43,251 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2023-08-27 10:20:43,251 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:20:43,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:43,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 10:20:43,252 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)] === [2023-08-27 10:20:43,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:43,255 INFO L85 PathProgramCache]: Analyzing trace with hash 14650771, now seen corresponding path program 1 times [2023-08-27 10:20:43,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:43,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023009085] [2023-08-27 10:20:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:43,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:43,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:43,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023009085] [2023-08-27 10:20:43,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023009085] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:43,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:43,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:20:43,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558445177] [2023-08-27 10:20:43,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:43,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:20:43,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:43,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:20:43,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:20:43,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-08-27 10:20:43,460 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) [2023-08-27 10:20:43,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:43,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-08-27 10:20:43,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:43,534 INFO L124 PetriNetUnfolderBase]: 132/253 cut-off events. [2023-08-27 10:20:43,534 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:20:43,535 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. [2023-08-27 10:20:43,538 INFO L140 encePairwiseOnDemand]: 238/245 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-08-27 10:20:43,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 35 transitions, 143 flow [2023-08-27 10:20:43,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:20:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:20:43,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2023-08-27 10:20:43,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170068027210886 [2023-08-27 10:20:43,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2023-08-27 10:20:43,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2023-08-27 10:20:43,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:43,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2023-08-27 10:20:43,560 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) [2023-08-27 10:20:43,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:43,563 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:43,565 INFO L175 Difference]: Start difference. First operand has 24 places, 23 transitions, 49 flow. Second operand 3 states and 332 transitions. [2023-08-27 10:20:43,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 35 transitions, 143 flow [2023-08-27 10:20:43,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 35 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:20:43,567 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 74 flow [2023-08-27 10:20:43,569 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} [2023-08-27 10:20:43,572 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2023-08-27 10:20:43,572 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 74 flow [2023-08-27 10:20:43,572 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) [2023-08-27 10:20:43,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:43,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 10:20:43,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 10:20:43,573 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)] === [2023-08-27 10:20:43,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:43,579 INFO L85 PathProgramCache]: Analyzing trace with hash 14649870, now seen corresponding path program 1 times [2023-08-27 10:20:43,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:43,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128448186] [2023-08-27 10:20:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:43,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:43,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:43,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128448186] [2023-08-27 10:20:43,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128448186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:43,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:43,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:20:43,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749055786] [2023-08-27 10:20:43,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:43,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:20:43,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:43,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:20:43,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:20:43,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-08-27 10:20:43,635 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) [2023-08-27 10:20:43,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:43,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-08-27 10:20:43,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:43,692 INFO L124 PetriNetUnfolderBase]: 118/233 cut-off events. [2023-08-27 10:20:43,692 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-27 10:20:43,693 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. [2023-08-27 10:20:43,693 INFO L140 encePairwiseOnDemand]: 236/245 looper letters, 35 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2023-08-27 10:20:43,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 198 flow [2023-08-27 10:20:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:20:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:20:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2023-08-27 10:20:43,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2023-08-27 10:20:43,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2023-08-27 10:20:43,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2023-08-27 10:20:43,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:43,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2023-08-27 10:20:43,704 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) [2023-08-27 10:20:43,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:43,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:43,706 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 74 flow. Second operand 3 states and 336 transitions. [2023-08-27 10:20:43,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 198 flow [2023-08-27 10:20:43,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 41 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:43,707 INFO L231 Difference]: Finished difference. Result has 28 places, 29 transitions, 126 flow [2023-08-27 10:20:43,707 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} [2023-08-27 10:20:43,708 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-08-27 10:20:43,708 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 29 transitions, 126 flow [2023-08-27 10:20:43,708 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) [2023-08-27 10:20:43,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:43,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 10:20:43,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 10:20:43,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-27 10:20:43,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:43,709 INFO L85 PathProgramCache]: Analyzing trace with hash 14651234, now seen corresponding path program 1 times [2023-08-27 10:20:43,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:43,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405598237] [2023-08-27 10:20:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:43,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:43,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:43,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405598237] [2023-08-27 10:20:43,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405598237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:43,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:43,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:20:43,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77580898] [2023-08-27 10:20:43,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:43,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:20:43,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:43,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:20:43,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:20:43,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 245 [2023-08-27 10:20:43,766 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) [2023-08-27 10:20:43,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:43,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 245 [2023-08-27 10:20:43,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:43,821 INFO L124 PetriNetUnfolderBase]: 161/332 cut-off events. [2023-08-27 10:20:43,822 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2023-08-27 10:20:43,822 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. [2023-08-27 10:20:43,823 INFO L140 encePairwiseOnDemand]: 241/245 looper letters, 49 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-08-27 10:20:43,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 53 transitions, 338 flow [2023-08-27 10:20:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:20:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:20:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-08-27 10:20:43,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2023-08-27 10:20:43,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-08-27 10:20:43,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-08-27 10:20:43,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:43,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-08-27 10:20:43,826 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) [2023-08-27 10:20:43,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:43,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:43,827 INFO L175 Difference]: Start difference. First operand has 28 places, 29 transitions, 126 flow. Second operand 3 states and 330 transitions. [2023-08-27 10:20:43,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 53 transitions, 338 flow [2023-08-27 10:20:43,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 53 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:43,829 INFO L231 Difference]: Finished difference. Result has 30 places, 30 transitions, 132 flow [2023-08-27 10:20:43,829 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} [2023-08-27 10:20:43,830 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2023-08-27 10:20:43,830 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 30 transitions, 132 flow [2023-08-27 10:20:43,830 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) [2023-08-27 10:20:43,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:43,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 10:20:43,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 10:20:43,831 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-27 10:20:43,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:43,831 INFO L85 PathProgramCache]: Analyzing trace with hash 454148247, now seen corresponding path program 1 times [2023-08-27 10:20:43,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:43,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574737381] [2023-08-27 10:20:43,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:43,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:43,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:43,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574737381] [2023-08-27 10:20:43,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574737381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:43,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:43,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:20:43,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902137511] [2023-08-27 10:20:43,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:43,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:20:43,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:43,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:20:43,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:20:43,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 245 [2023-08-27 10:20:43,858 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) [2023-08-27 10:20:43,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:43,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 245 [2023-08-27 10:20:43,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:43,914 INFO L124 PetriNetUnfolderBase]: 155/323 cut-off events. [2023-08-27 10:20:43,914 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-08-27 10:20:43,914 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. [2023-08-27 10:20:43,915 INFO L140 encePairwiseOnDemand]: 243/245 looper letters, 38 selfloop transitions, 1 changer transitions 3/43 dead transitions. [2023-08-27 10:20:43,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 258 flow [2023-08-27 10:20:43,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:20:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:20:43,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2023-08-27 10:20:43,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43673469387755104 [2023-08-27 10:20:43,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2023-08-27 10:20:43,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2023-08-27 10:20:43,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:43,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2023-08-27 10:20:43,918 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) [2023-08-27 10:20:43,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:43,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:43,920 INFO L175 Difference]: Start difference. First operand has 30 places, 30 transitions, 132 flow. Second operand 3 states and 321 transitions. [2023-08-27 10:20:43,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 258 flow [2023-08-27 10:20:43,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:43,922 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 131 flow [2023-08-27 10:20:43,922 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} [2023-08-27 10:20:43,922 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2023-08-27 10:20:43,922 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 131 flow [2023-08-27 10:20:43,923 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) [2023-08-27 10:20:43,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:43,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 10:20:43,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 10:20:43,923 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)] === [2023-08-27 10:20:43,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:43,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1194575982, now seen corresponding path program 1 times [2023-08-27 10:20:43,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:43,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395754920] [2023-08-27 10:20:43,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:43,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:43,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:43,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395754920] [2023-08-27 10:20:43,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395754920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:43,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:43,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:20:43,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998811840] [2023-08-27 10:20:43,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:43,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:20:43,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:43,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:20:43,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:20:43,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-08-27 10:20:43,960 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) [2023-08-27 10:20:43,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:43,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-08-27 10:20:43,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:44,035 INFO L124 PetriNetUnfolderBase]: 153/320 cut-off events. [2023-08-27 10:20:44,035 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-08-27 10:20:44,035 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. [2023-08-27 10:20:44,036 INFO L140 encePairwiseOnDemand]: 235/245 looper letters, 37 selfloop transitions, 7 changer transitions 6/50 dead transitions. [2023-08-27 10:20:44,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 50 transitions, 284 flow [2023-08-27 10:20:44,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:20:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:20:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2023-08-27 10:20:44,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45102040816326533 [2023-08-27 10:20:44,042 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 442 transitions. [2023-08-27 10:20:44,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 442 transitions. [2023-08-27 10:20:44,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:44,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 442 transitions. [2023-08-27 10:20:44,043 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) [2023-08-27 10:20:44,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:44,045 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:44,045 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 131 flow. Second operand 4 states and 442 transitions. [2023-08-27 10:20:44,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 50 transitions, 284 flow [2023-08-27 10:20:44,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 50 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:20:44,048 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 147 flow [2023-08-27 10:20:44,048 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} [2023-08-27 10:20:44,050 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2023-08-27 10:20:44,050 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 147 flow [2023-08-27 10:20:44,050 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) [2023-08-27 10:20:44,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:44,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 10:20:44,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 10:20:44,051 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-27 10:20:44,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:44,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1194362515, now seen corresponding path program 1 times [2023-08-27 10:20:44,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:44,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727883642] [2023-08-27 10:20:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:44,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:44,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:44,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727883642] [2023-08-27 10:20:44,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727883642] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:44,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:44,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:20:44,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269334886] [2023-08-27 10:20:44,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:44,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:20:44,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:44,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:20:44,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:20:44,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 245 [2023-08-27 10:20:44,109 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) [2023-08-27 10:20:44,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:44,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 245 [2023-08-27 10:20:44,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:44,140 INFO L124 PetriNetUnfolderBase]: 102/222 cut-off events. [2023-08-27 10:20:44,140 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2023-08-27 10:20:44,140 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. [2023-08-27 10:20:44,141 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 30 selfloop transitions, 2 changer transitions 3/36 dead transitions. [2023-08-27 10:20:44,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 258 flow [2023-08-27 10:20:44,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:20:44,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:20:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2023-08-27 10:20:44,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340136054421769 [2023-08-27 10:20:44,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2023-08-27 10:20:44,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2023-08-27 10:20:44,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:44,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2023-08-27 10:20:44,143 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) [2023-08-27 10:20:44,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:44,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:44,145 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 147 flow. Second operand 3 states and 319 transitions. [2023-08-27 10:20:44,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 258 flow [2023-08-27 10:20:44,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 245 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:44,146 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 145 flow [2023-08-27 10:20:44,146 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} [2023-08-27 10:20:44,147 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2023-08-27 10:20:44,147 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 145 flow [2023-08-27 10:20:44,147 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) [2023-08-27 10:20:44,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:44,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:44,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 10:20:44,147 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)] === [2023-08-27 10:20:44,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:44,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1629468708, now seen corresponding path program 1 times [2023-08-27 10:20:44,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:44,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228303470] [2023-08-27 10:20:44,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:44,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:44,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:44,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228303470] [2023-08-27 10:20:44,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228303470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:44,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:44,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:20:44,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060980656] [2023-08-27 10:20:44,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:44,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:20:44,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:44,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:20:44,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:20:44,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 245 [2023-08-27 10:20:44,178 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) [2023-08-27 10:20:44,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:44,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 245 [2023-08-27 10:20:44,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:44,265 INFO L124 PetriNetUnfolderBase]: 178/356 cut-off events. [2023-08-27 10:20:44,265 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2023-08-27 10:20:44,265 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. [2023-08-27 10:20:44,266 INFO L140 encePairwiseOnDemand]: 235/245 looper letters, 38 selfloop transitions, 14 changer transitions 6/58 dead transitions. [2023-08-27 10:20:44,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 58 transitions, 368 flow [2023-08-27 10:20:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:20:44,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:20:44,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 626 transitions. [2023-08-27 10:20:44,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42585034013605444 [2023-08-27 10:20:44,268 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 626 transitions. [2023-08-27 10:20:44,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 626 transitions. [2023-08-27 10:20:44,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:44,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 626 transitions. [2023-08-27 10:20:44,269 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) [2023-08-27 10:20:44,271 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) [2023-08-27 10:20:44,271 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) [2023-08-27 10:20:44,271 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 145 flow. Second operand 6 states and 626 transitions. [2023-08-27 10:20:44,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 58 transitions, 368 flow [2023-08-27 10:20:44,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 58 transitions, 353 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 10:20:44,273 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 218 flow [2023-08-27 10:20:44,273 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} [2023-08-27 10:20:44,273 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-08-27 10:20:44,273 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 218 flow [2023-08-27 10:20:44,274 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) [2023-08-27 10:20:44,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:44,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:44,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 10:20:44,274 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)] === [2023-08-27 10:20:44,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:44,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1623064727, now seen corresponding path program 1 times [2023-08-27 10:20:44,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:44,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640155582] [2023-08-27 10:20:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:44,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:44,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:44,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640155582] [2023-08-27 10:20:44,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640155582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:44,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:44,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:20:44,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980566931] [2023-08-27 10:20:44,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:44,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:20:44,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:44,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:20:44,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:20:44,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 245 [2023-08-27 10:20:44,318 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) [2023-08-27 10:20:44,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:44,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 245 [2023-08-27 10:20:44,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:44,362 INFO L124 PetriNetUnfolderBase]: 101/228 cut-off events. [2023-08-27 10:20:44,362 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2023-08-27 10:20:44,362 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. [2023-08-27 10:20:44,363 INFO L140 encePairwiseOnDemand]: 236/245 looper letters, 23 selfloop transitions, 8 changer transitions 4/35 dead transitions. [2023-08-27 10:20:44,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 238 flow [2023-08-27 10:20:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:20:44,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:20:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 510 transitions. [2023-08-27 10:20:44,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4163265306122449 [2023-08-27 10:20:44,364 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 510 transitions. [2023-08-27 10:20:44,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 510 transitions. [2023-08-27 10:20:44,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:44,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 510 transitions. [2023-08-27 10:20:44,365 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) [2023-08-27 10:20:44,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:44,367 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:44,367 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 218 flow. Second operand 5 states and 510 transitions. [2023-08-27 10:20:44,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 238 flow [2023-08-27 10:20:44,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 35 transitions, 213 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-27 10:20:44,369 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 113 flow [2023-08-27 10:20:44,369 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} [2023-08-27 10:20:44,370 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 11 predicate places. [2023-08-27 10:20:44,370 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 113 flow [2023-08-27 10:20:44,370 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) [2023-08-27 10:20:44,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:44,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:44,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 10:20:44,370 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)] === [2023-08-27 10:20:44,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:44,371 INFO L85 PathProgramCache]: Analyzing trace with hash -489827015, now seen corresponding path program 1 times [2023-08-27 10:20:44,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:44,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243686925] [2023-08-27 10:20:44,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:44,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:44,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:44,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243686925] [2023-08-27 10:20:44,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243686925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:44,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:44,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:20:44,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512230554] [2023-08-27 10:20:44,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:44,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:20:44,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:44,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:20:44,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:20:44,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 245 [2023-08-27 10:20:44,422 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) [2023-08-27 10:20:44,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:44,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 245 [2023-08-27 10:20:44,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:44,463 INFO L124 PetriNetUnfolderBase]: 64/161 cut-off events. [2023-08-27 10:20:44,464 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2023-08-27 10:20:44,464 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. [2023-08-27 10:20:44,464 INFO L140 encePairwiseOnDemand]: 240/245 looper letters, 20 selfloop transitions, 9 changer transitions 2/31 dead transitions. [2023-08-27 10:20:44,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 197 flow [2023-08-27 10:20:44,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:20:44,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:20:44,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 599 transitions. [2023-08-27 10:20:44,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40748299319727893 [2023-08-27 10:20:44,466 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 599 transitions. [2023-08-27 10:20:44,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 599 transitions. [2023-08-27 10:20:44,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:44,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 599 transitions. [2023-08-27 10:20:44,467 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) [2023-08-27 10:20:44,469 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) [2023-08-27 10:20:44,469 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) [2023-08-27 10:20:44,469 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 113 flow. Second operand 6 states and 599 transitions. [2023-08-27 10:20:44,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 197 flow [2023-08-27 10:20:44,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 176 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 10:20:44,470 INFO L231 Difference]: Finished difference. Result has 31 places, 18 transitions, 98 flow [2023-08-27 10:20:44,470 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} [2023-08-27 10:20:44,470 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2023-08-27 10:20:44,470 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 98 flow [2023-08-27 10:20:44,471 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) [2023-08-27 10:20:44,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:44,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:44,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 10:20:44,471 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-27 10:20:44,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:44,471 INFO L85 PathProgramCache]: Analyzing trace with hash 21555636, now seen corresponding path program 1 times [2023-08-27 10:20:44,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:44,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998333728] [2023-08-27 10:20:44,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:44,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:44,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:44,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:44,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998333728] [2023-08-27 10:20:44,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998333728] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:44,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:44,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:20:44,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125611311] [2023-08-27 10:20:44,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:44,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:20:44,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:44,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:20:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:20:44,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 245 [2023-08-27 10:20:44,509 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) [2023-08-27 10:20:44,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:44,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 245 [2023-08-27 10:20:44,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:44,531 INFO L124 PetriNetUnfolderBase]: 22/96 cut-off events. [2023-08-27 10:20:44,531 INFO L125 PetriNetUnfolderBase]: For 132/133 co-relation queries the response was YES. [2023-08-27 10:20:44,531 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. [2023-08-27 10:20:44,532 INFO L140 encePairwiseOnDemand]: 241/245 looper letters, 16 selfloop transitions, 2 changer transitions 4/24 dead transitions. [2023-08-27 10:20:44,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 180 flow [2023-08-27 10:20:44,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:20:44,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:20:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2023-08-27 10:20:44,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-08-27 10:20:44,533 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2023-08-27 10:20:44,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2023-08-27 10:20:44,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:44,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2023-08-27 10:20:44,534 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) [2023-08-27 10:20:44,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:44,536 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:44,536 INFO L175 Difference]: Start difference. First operand has 31 places, 18 transitions, 98 flow. Second operand 4 states and 392 transitions. [2023-08-27 10:20:44,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 180 flow [2023-08-27 10:20:44,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 159 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 10:20:44,536 INFO L231 Difference]: Finished difference. Result has 30 places, 17 transitions, 89 flow [2023-08-27 10:20:44,537 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} [2023-08-27 10:20:44,537 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2023-08-27 10:20:44,537 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 89 flow [2023-08-27 10:20:44,538 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) [2023-08-27 10:20:44,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:44,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:44,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 10:20:44,538 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-08-27 10:20:44,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:44,538 INFO L85 PathProgramCache]: Analyzing trace with hash 30957978, now seen corresponding path program 1 times [2023-08-27 10:20:44,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:44,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317272617] [2023-08-27 10:20:44,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:44,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 10:20:44,548 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 10:20:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 10:20:44,571 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 10:20:44,571 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 10:20:44,572 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (9 of 10 remaining) [2023-08-27 10:20:44,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-08-27 10:20:44,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-08-27 10:20:44,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-08-27 10:20:44,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-08-27 10:20:44,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-08-27 10:20:44,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-08-27 10:20:44,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2023-08-27 10:20:44,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-08-27 10:20:44,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-08-27 10:20:44,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 10:20:44,576 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:44,579 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 10:20:44,579 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 10:20:44,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:20:44 BasicIcfg [2023-08-27 10:20:44,608 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 10:20:44,608 INFO L158 Benchmark]: Toolchain (without parser) took 4633.40ms. Allocated memory was 379.6MB in the beginning and 511.7MB in the end (delta: 132.1MB). Free memory was 354.7MB in the beginning and 330.1MB in the end (delta: 24.6MB). Peak memory consumption was 158.1MB. Max. memory is 16.0GB. [2023-08-27 10:20:44,608 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 379.6MB. Free memory was 356.3MB in the beginning and 356.3MB in the end (delta: 77.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:20:44,608 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.53ms. Allocated memory is still 379.6MB. Free memory was 354.4MB in the beginning and 334.5MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 10:20:44,609 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.98ms. Allocated memory is still 379.6MB. Free memory was 334.5MB in the beginning and 332.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:20:44,609 INFO L158 Benchmark]: Boogie Preprocessor took 29.90ms. Allocated memory is still 379.6MB. Free memory was 332.4MB in the beginning and 331.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:20:44,609 INFO L158 Benchmark]: RCFGBuilder took 333.79ms. Allocated memory is still 379.6MB. Free memory was 331.0MB in the beginning and 313.5MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 10:20:44,609 INFO L158 Benchmark]: TraceAbstraction took 3881.86ms. Allocated memory was 379.6MB in the beginning and 511.7MB in the end (delta: 132.1MB). Free memory was 312.8MB in the beginning and 330.1MB in the end (delta: -17.3MB). Peak memory consumption was 116.2MB. Max. memory is 16.0GB. [2023-08-27 10:20:44,610 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 379.6MB. Free memory was 356.3MB in the beginning and 356.3MB in the end (delta: 77.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 346.53ms. Allocated memory is still 379.6MB. Free memory was 354.4MB in the beginning and 334.5MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.98ms. Allocated memory is still 379.6MB. Free memory was 334.5MB in the beginning and 332.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.90ms. Allocated memory is still 379.6MB. Free memory was 332.4MB in the beginning and 331.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 333.79ms. Allocated memory is still 379.6MB. Free memory was 331.0MB in the beginning and 313.5MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 3881.86ms. Allocated memory was 379.6MB in the beginning and 511.7MB in the end (delta: 132.1MB). Free memory was 312.8MB in the beginning and 330.1MB in the end (delta: -17.3MB). Peak memory consumption was 116.2MB. 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: 2.3s, 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: 3.8s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, 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! [2023-08-27 10:20:44,621 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...