/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 21:26:05,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 21:26:05,504 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 21:26:05,509 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 21:26:05,509 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 21:26:05,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 21:26:05,541 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 21:26:05,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 21:26:05,542 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 21:26:05,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 21:26:05,546 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 21:26:05,546 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 21:26:05,547 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 21:26:05,548 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 21:26:05,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 21:26:05,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 21:26:05,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 21:26:05,548 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 21:26:05,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 21:26:05,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 21:26:05,549 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 21:26:05,550 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 21:26:05,550 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 21:26:05,550 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 21:26:05,551 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 21:26:05,551 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 21:26:05,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 21:26:05,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:26:05,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 21:26:05,552 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 21:26:05,552 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 21:26:05,553 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 21:26:05,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 21:26:05,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 21:26:05,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 21:26:05,553 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 21:26:05,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 21:26:05,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 21:26:05,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 21:26:05,888 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 21:26:05,889 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 21:26:05,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 21:26:07,071 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 21:26:07,335 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 21:26:07,336 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 21:26:07,352 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24dfe8d35/4e6cc453815740ffab84b473ecc274bd/FLAG35480c0e1 [2023-08-26 21:26:07,364 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24dfe8d35/4e6cc453815740ffab84b473ecc274bd [2023-08-26 21:26:07,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 21:26:07,367 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 21:26:07,368 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 21:26:07,368 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 21:26:07,370 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 21:26:07,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:26:07" (1/1) ... [2023-08-26 21:26:07,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec7fc40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:07, skipping insertion in model container [2023-08-26 21:26:07,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:26:07" (1/1) ... [2023-08-26 21:26:07,408 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 21:26:07,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:26:07,752 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 21:26:07,778 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 21:26:07,780 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 21:26:07,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:26:07,847 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:26:07,848 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:26:07,854 INFO L206 MainTranslator]: Completed translation [2023-08-26 21:26:07,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:07 WrapperNode [2023-08-26 21:26:07,855 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 21:26:07,856 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 21:26:07,856 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 21:26:07,856 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 21:26:07,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:07" (1/1) ... [2023-08-26 21:26:07,891 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:07" (1/1) ... [2023-08-26 21:26:07,909 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-08-26 21:26:07,909 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 21:26:07,910 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 21:26:07,910 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 21:26:07,910 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 21:26:07,919 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:07" (1/1) ... [2023-08-26 21:26:07,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:07" (1/1) ... [2023-08-26 21:26:07,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:07" (1/1) ... [2023-08-26 21:26:07,936 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:07" (1/1) ... [2023-08-26 21:26:07,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:07" (1/1) ... [2023-08-26 21:26:07,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:07" (1/1) ... [2023-08-26 21:26:07,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:07" (1/1) ... [2023-08-26 21:26:07,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:07" (1/1) ... [2023-08-26 21:26:07,947 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 21:26:07,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 21:26:07,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 21:26:07,948 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 21:26:07,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:07" (1/1) ... [2023-08-26 21:26:07,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:26:07,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:26:07,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 21:26:07,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 21:26:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 21:26:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 21:26:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 21:26:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 21:26:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 21:26:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 21:26:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 21:26:08,020 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 21:26:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 21:26:08,020 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 21:26:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 21:26:08,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 21:26:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 21:26:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 21:26:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 21:26:08,023 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 21:26:08,134 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 21:26:08,135 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 21:26:08,277 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 21:26:08,308 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 21:26:08,308 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 21:26:08,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:26:08 BoogieIcfgContainer [2023-08-26 21:26:08,311 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 21:26:08,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 21:26:08,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 21:26:08,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 21:26:08,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:26:07" (1/3) ... [2023-08-26 21:26:08,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d845b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:26:08, skipping insertion in model container [2023-08-26 21:26:08,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:26:07" (2/3) ... [2023-08-26 21:26:08,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d845b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:26:08, skipping insertion in model container [2023-08-26 21:26:08,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:26:08" (3/3) ... [2023-08-26 21:26:08,319 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 21:26:08,332 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 21:26:08,332 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 21:26:08,332 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 21:26:08,395 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:26:08,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 94 transitions, 203 flow [2023-08-26 21:26:08,525 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-08-26 21:26:08,526 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:26:08,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-26 21:26:08,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 94 transitions, 203 flow [2023-08-26 21:26:08,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 91 transitions, 191 flow [2023-08-26 21:26:08,536 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:26:08,544 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 91 transitions, 191 flow [2023-08-26 21:26:08,546 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 91 transitions, 191 flow [2023-08-26 21:26:08,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 91 transitions, 191 flow [2023-08-26 21:26:08,567 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-08-26 21:26:08,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:26:08,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-26 21:26:08,569 INFO L119 LiptonReduction]: Number of co-enabled transitions 2256 [2023-08-26 21:26:10,764 INFO L134 LiptonReduction]: Checked pairs total: 6520 [2023-08-26 21:26:10,764 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-26 21:26:10,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:26:10,782 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;@347a04cd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:26:10,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-26 21:26:10,785 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:26:10,785 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 21:26:10,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:26:10,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:10,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:26:10,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:26:10,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:10,791 INFO L85 PathProgramCache]: Analyzing trace with hash 338043436, now seen corresponding path program 1 times [2023-08-26 21:26:10,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:10,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240739270] [2023-08-26 21:26:10,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:10,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:11,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:11,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240739270] [2023-08-26 21:26:11,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240739270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:11,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:11,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:26:11,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773562412] [2023-08-26 21:26:11,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:11,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:26:11,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:11,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:26:11,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:26:11,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 182 [2023-08-26 21:26:11,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:11,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:11,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 182 [2023-08-26 21:26:11,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:11,214 INFO L124 PetriNetUnfolderBase]: 496/815 cut-off events. [2023-08-26 21:26:11,214 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-26 21:26:11,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 815 events. 496/815 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 3707 event pairs, 127 based on Foata normal form. 0/515 useless extension candidates. Maximal degree in co-relation 1648. Up to 710 conditions per place. [2023-08-26 21:26:11,221 INFO L140 encePairwiseOnDemand]: 171/182 looper letters, 30 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-26 21:26:11,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 157 flow [2023-08-26 21:26:11,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:26:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:26:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-08-26 21:26:11,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945054945054945 [2023-08-26 21:26:11,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-08-26 21:26:11,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-08-26 21:26:11,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:11,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-08-26 21:26:11,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:11,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:11,244 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:11,245 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 59 flow. Second operand 3 states and 270 transitions. [2023-08-26 21:26:11,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 157 flow [2023-08-26 21:26:11,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 21:26:11,249 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 90 flow [2023-08-26 21:26:11,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-08-26 21:26:11,253 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-26 21:26:11,253 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 90 flow [2023-08-26 21:26:11,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:11,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:11,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:11,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 21:26:11,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:26:11,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:11,255 INFO L85 PathProgramCache]: Analyzing trace with hash -101962232, now seen corresponding path program 1 times [2023-08-26 21:26:11,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:11,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91023607] [2023-08-26 21:26:11,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:11,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:11,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:11,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:11,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91023607] [2023-08-26 21:26:11,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91023607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:11,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:11,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:26:11,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863167652] [2023-08-26 21:26:11,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:11,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:26:11,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:11,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:26:11,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:26:11,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 182 [2023-08-26 21:26:11,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:11,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:11,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 182 [2023-08-26 21:26:11,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:11,766 INFO L124 PetriNetUnfolderBase]: 1182/1991 cut-off events. [2023-08-26 21:26:11,766 INFO L125 PetriNetUnfolderBase]: For 242/268 co-relation queries the response was YES. [2023-08-26 21:26:11,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4939 conditions, 1991 events. 1182/1991 cut-off events. For 242/268 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11177 event pairs, 469 based on Foata normal form. 4/1647 useless extension candidates. Maximal degree in co-relation 4928. Up to 1002 conditions per place. [2023-08-26 21:26:11,809 INFO L140 encePairwiseOnDemand]: 173/182 looper letters, 37 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2023-08-26 21:26:11,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 247 flow [2023-08-26 21:26:11,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:26:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:26:11,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-08-26 21:26:11,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45787545787545786 [2023-08-26 21:26:11,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-08-26 21:26:11,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-08-26 21:26:11,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:11,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-08-26 21:26:11,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:11,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:11,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:11,823 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 90 flow. Second operand 3 states and 250 transitions. [2023-08-26 21:26:11,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 247 flow [2023-08-26 21:26:11,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:26:11,825 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 148 flow [2023-08-26 21:26:11,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2023-08-26 21:26:11,826 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-26 21:26:11,827 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 148 flow [2023-08-26 21:26:11,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:11,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:11,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:11,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 21:26:11,835 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:26:11,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:11,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1134137091, now seen corresponding path program 1 times [2023-08-26 21:26:11,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:11,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85815610] [2023-08-26 21:26:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:11,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:11,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:11,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85815610] [2023-08-26 21:26:11,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85815610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:11,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:11,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:26:11,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779468489] [2023-08-26 21:26:11,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:11,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:26:11,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:11,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:26:11,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:26:11,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 182 [2023-08-26 21:26:11,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:11,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:11,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 182 [2023-08-26 21:26:11,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:12,148 INFO L124 PetriNetUnfolderBase]: 963/1745 cut-off events. [2023-08-26 21:26:12,149 INFO L125 PetriNetUnfolderBase]: For 894/912 co-relation queries the response was YES. [2023-08-26 21:26:12,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5037 conditions, 1745 events. 963/1745 cut-off events. For 894/912 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10727 event pairs, 258 based on Foata normal form. 12/1488 useless extension candidates. Maximal degree in co-relation 5023. Up to 1072 conditions per place. [2023-08-26 21:26:12,161 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 35 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-08-26 21:26:12,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 280 flow [2023-08-26 21:26:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:26:12,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:26:12,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-08-26 21:26:12,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47802197802197804 [2023-08-26 21:26:12,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-08-26 21:26:12,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-08-26 21:26:12,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:12,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-08-26 21:26:12,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,166 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 148 flow. Second operand 3 states and 261 transitions. [2023-08-26 21:26:12,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 47 transitions, 280 flow [2023-08-26 21:26:12,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:26:12,172 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 143 flow [2023-08-26 21:26:12,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-08-26 21:26:12,174 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-08-26 21:26:12,174 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 143 flow [2023-08-26 21:26:12,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:12,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:12,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 21:26:12,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:26:12,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:12,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1134136161, now seen corresponding path program 1 times [2023-08-26 21:26:12,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:12,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420369345] [2023-08-26 21:26:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:12,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:12,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:12,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420369345] [2023-08-26 21:26:12,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420369345] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:12,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:12,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:26:12,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283813518] [2023-08-26 21:26:12,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:12,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:26:12,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:12,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:26:12,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:26:12,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 182 [2023-08-26 21:26:12,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:12,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 182 [2023-08-26 21:26:12,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:12,452 INFO L124 PetriNetUnfolderBase]: 1103/1881 cut-off events. [2023-08-26 21:26:12,452 INFO L125 PetriNetUnfolderBase]: For 760/810 co-relation queries the response was YES. [2023-08-26 21:26:12,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5433 conditions, 1881 events. 1103/1881 cut-off events. For 760/810 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10874 event pairs, 240 based on Foata normal form. 6/1586 useless extension candidates. Maximal degree in co-relation 5418. Up to 1436 conditions per place. [2023-08-26 21:26:12,467 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 43 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-26 21:26:12,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 305 flow [2023-08-26 21:26:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:26:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:26:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-08-26 21:26:12,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4706959706959707 [2023-08-26 21:26:12,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-08-26 21:26:12,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-08-26 21:26:12,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:12,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-08-26 21:26:12,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,472 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 143 flow. Second operand 3 states and 257 transitions. [2023-08-26 21:26:12,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 51 transitions, 305 flow [2023-08-26 21:26:12,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 51 transitions, 295 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:26:12,475 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 148 flow [2023-08-26 21:26:12,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-08-26 21:26:12,477 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-08-26 21:26:12,477 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 148 flow [2023-08-26 21:26:12,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:12,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:12,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 21:26:12,478 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:26:12,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:12,479 INFO L85 PathProgramCache]: Analyzing trace with hash -400929315, now seen corresponding path program 1 times [2023-08-26 21:26:12,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:12,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206569479] [2023-08-26 21:26:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:12,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:12,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:12,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206569479] [2023-08-26 21:26:12,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206569479] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:12,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:12,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:26:12,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485848093] [2023-08-26 21:26:12,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:12,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:26:12,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:12,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:26:12,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:26:12,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 182 [2023-08-26 21:26:12,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:12,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 182 [2023-08-26 21:26:12,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:12,701 INFO L124 PetriNetUnfolderBase]: 804/1340 cut-off events. [2023-08-26 21:26:12,701 INFO L125 PetriNetUnfolderBase]: For 915/978 co-relation queries the response was YES. [2023-08-26 21:26:12,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4108 conditions, 1340 events. 804/1340 cut-off events. For 915/978 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7270 event pairs, 155 based on Foata normal form. 44/1160 useless extension candidates. Maximal degree in co-relation 4092. Up to 954 conditions per place. [2023-08-26 21:26:12,709 INFO L140 encePairwiseOnDemand]: 175/182 looper letters, 35 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-08-26 21:26:12,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 276 flow [2023-08-26 21:26:12,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:26:12,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:26:12,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2023-08-26 21:26:12,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2023-08-26 21:26:12,711 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 338 transitions. [2023-08-26 21:26:12,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 338 transitions. [2023-08-26 21:26:12,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:12,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 338 transitions. [2023-08-26 21:26:12,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,715 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,715 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 148 flow. Second operand 4 states and 338 transitions. [2023-08-26 21:26:12,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 276 flow [2023-08-26 21:26:12,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:26:12,718 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 138 flow [2023-08-26 21:26:12,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-26 21:26:12,719 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-26 21:26:12,720 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 138 flow [2023-08-26 21:26:12,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:12,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:12,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 21:26:12,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:26:12,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:12,721 INFO L85 PathProgramCache]: Analyzing trace with hash -401544044, now seen corresponding path program 1 times [2023-08-26 21:26:12,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:12,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495140910] [2023-08-26 21:26:12,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:12,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:12,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:12,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495140910] [2023-08-26 21:26:12,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495140910] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:12,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:12,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:26:12,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029615073] [2023-08-26 21:26:12,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:12,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:26:12,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:12,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:26:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:26:12,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 182 [2023-08-26 21:26:12,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:12,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 182 [2023-08-26 21:26:12,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:12,883 INFO L124 PetriNetUnfolderBase]: 575/972 cut-off events. [2023-08-26 21:26:12,883 INFO L125 PetriNetUnfolderBase]: For 879/948 co-relation queries the response was YES. [2023-08-26 21:26:12,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3037 conditions, 972 events. 575/972 cut-off events. For 879/948 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4914 event pairs, 97 based on Foata normal form. 47/981 useless extension candidates. Maximal degree in co-relation 3021. Up to 328 conditions per place. [2023-08-26 21:26:12,889 INFO L140 encePairwiseOnDemand]: 175/182 looper letters, 46 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2023-08-26 21:26:12,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 361 flow [2023-08-26 21:26:12,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:26:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:26:12,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2023-08-26 21:26:12,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793956043956044 [2023-08-26 21:26:12,891 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 349 transitions. [2023-08-26 21:26:12,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 349 transitions. [2023-08-26 21:26:12,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:12,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 349 transitions. [2023-08-26 21:26:12,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,895 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,895 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 138 flow. Second operand 4 states and 349 transitions. [2023-08-26 21:26:12,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 361 flow [2023-08-26 21:26:12,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:26:12,897 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 177 flow [2023-08-26 21:26:12,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-08-26 21:26:12,899 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-08-26 21:26:12,899 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 177 flow [2023-08-26 21:26:12,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:12,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:12,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:12,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 21:26:12,900 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:26:12,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:12,900 INFO L85 PathProgramCache]: Analyzing trace with hash 831691879, now seen corresponding path program 1 times [2023-08-26 21:26:12,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:12,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890876845] [2023-08-26 21:26:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:12,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:13,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:13,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890876845] [2023-08-26 21:26:13,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890876845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:13,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:13,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:26:13,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005292619] [2023-08-26 21:26:13,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:13,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:26:13,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:13,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:26:13,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:26:13,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 182 [2023-08-26 21:26:13,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:13,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 182 [2023-08-26 21:26:13,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:13,139 INFO L124 PetriNetUnfolderBase]: 714/1141 cut-off events. [2023-08-26 21:26:13,139 INFO L125 PetriNetUnfolderBase]: For 1342/1342 co-relation queries the response was YES. [2023-08-26 21:26:13,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4162 conditions, 1141 events. 714/1141 cut-off events. For 1342/1342 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5132 event pairs, 169 based on Foata normal form. 6/1123 useless extension candidates. Maximal degree in co-relation 4145. Up to 454 conditions per place. [2023-08-26 21:26:13,146 INFO L140 encePairwiseOnDemand]: 173/182 looper letters, 58 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2023-08-26 21:26:13,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 68 transitions, 488 flow [2023-08-26 21:26:13,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:26:13,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:26:13,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-08-26 21:26:13,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2023-08-26 21:26:13,148 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-08-26 21:26:13,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-08-26 21:26:13,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:13,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-08-26 21:26:13,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,152 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,152 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 177 flow. Second operand 4 states and 329 transitions. [2023-08-26 21:26:13,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 68 transitions, 488 flow [2023-08-26 21:26:13,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 68 transitions, 454 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-26 21:26:13,157 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 236 flow [2023-08-26 21:26:13,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-08-26 21:26:13,158 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-26 21:26:13,158 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 236 flow [2023-08-26 21:26:13,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:13,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:13,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 21:26:13,158 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:26:13,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:13,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1016063764, now seen corresponding path program 1 times [2023-08-26 21:26:13,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:13,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827626075] [2023-08-26 21:26:13,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:13,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:13,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:13,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827626075] [2023-08-26 21:26:13,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827626075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:13,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:13,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:26:13,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122501809] [2023-08-26 21:26:13,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:13,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:26:13,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:13,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:26:13,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:26:13,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 182 [2023-08-26 21:26:13,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:13,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 182 [2023-08-26 21:26:13,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:13,437 INFO L124 PetriNetUnfolderBase]: 705/1126 cut-off events. [2023-08-26 21:26:13,437 INFO L125 PetriNetUnfolderBase]: For 1566/1566 co-relation queries the response was YES. [2023-08-26 21:26:13,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4618 conditions, 1126 events. 705/1126 cut-off events. For 1566/1566 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4909 event pairs, 75 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 4598. Up to 613 conditions per place. [2023-08-26 21:26:13,445 INFO L140 encePairwiseOnDemand]: 173/182 looper letters, 59 selfloop transitions, 19 changer transitions 0/78 dead transitions. [2023-08-26 21:26:13,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 605 flow [2023-08-26 21:26:13,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:26:13,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:26:13,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-08-26 21:26:13,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45604395604395603 [2023-08-26 21:26:13,447 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-08-26 21:26:13,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-08-26 21:26:13,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:13,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-08-26 21:26:13,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,450 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,450 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 236 flow. Second operand 4 states and 332 transitions. [2023-08-26 21:26:13,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 605 flow [2023-08-26 21:26:13,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 78 transitions, 597 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:26:13,456 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 407 flow [2023-08-26 21:26:13,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=407, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2023-08-26 21:26:13,458 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-08-26 21:26:13,458 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 407 flow [2023-08-26 21:26:13,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:13,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:13,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 21:26:13,459 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:26:13,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:13,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1430728175, now seen corresponding path program 1 times [2023-08-26 21:26:13,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:13,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928422855] [2023-08-26 21:26:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:13,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:13,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:13,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928422855] [2023-08-26 21:26:13,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928422855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:13,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:13,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:26:13,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429668143] [2023-08-26 21:26:13,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:13,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:26:13,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:13,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:26:13,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:26:13,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 182 [2023-08-26 21:26:13,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 407 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:13,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 182 [2023-08-26 21:26:13,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:13,776 INFO L124 PetriNetUnfolderBase]: 431/798 cut-off events. [2023-08-26 21:26:13,776 INFO L125 PetriNetUnfolderBase]: For 3918/4178 co-relation queries the response was YES. [2023-08-26 21:26:13,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3523 conditions, 798 events. 431/798 cut-off events. For 3918/4178 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4265 event pairs, 52 based on Foata normal form. 338/1097 useless extension candidates. Maximal degree in co-relation 3498. Up to 424 conditions per place. [2023-08-26 21:26:13,782 INFO L140 encePairwiseOnDemand]: 172/182 looper letters, 75 selfloop transitions, 14 changer transitions 3/104 dead transitions. [2023-08-26 21:26:13,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 104 transitions, 1024 flow [2023-08-26 21:26:13,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:26:13,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:26:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 420 transitions. [2023-08-26 21:26:13,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2023-08-26 21:26:13,784 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 420 transitions. [2023-08-26 21:26:13,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 420 transitions. [2023-08-26 21:26:13,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:13,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 420 transitions. [2023-08-26 21:26:13,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 182.0) internal successors, (1092), 6 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,787 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 182.0) internal successors, (1092), 6 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,788 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 407 flow. Second operand 5 states and 420 transitions. [2023-08-26 21:26:13,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 104 transitions, 1024 flow [2023-08-26 21:26:13,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 104 transitions, 1024 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:26:13,794 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 511 flow [2023-08-26 21:26:13,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=511, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2023-08-26 21:26:13,795 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2023-08-26 21:26:13,795 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 511 flow [2023-08-26 21:26:13,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:13,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:13,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 21:26:13,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:26:13,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:13,796 INFO L85 PathProgramCache]: Analyzing trace with hash -959402445, now seen corresponding path program 1 times [2023-08-26 21:26:13,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:13,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775054916] [2023-08-26 21:26:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:13,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:13,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:13,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775054916] [2023-08-26 21:26:13,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775054916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:13,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:13,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:26:13,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458235777] [2023-08-26 21:26:13,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:13,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:26:13,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:13,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:26:13,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:26:13,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 182 [2023-08-26 21:26:13,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 511 flow. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:13,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:13,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 182 [2023-08-26 21:26:13,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:14,057 INFO L124 PetriNetUnfolderBase]: 320/642 cut-off events. [2023-08-26 21:26:14,058 INFO L125 PetriNetUnfolderBase]: For 4644/4892 co-relation queries the response was YES. [2023-08-26 21:26:14,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3182 conditions, 642 events. 320/642 cut-off events. For 4644/4892 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3529 event pairs, 19 based on Foata normal form. 264/899 useless extension candidates. Maximal degree in co-relation 3152. Up to 168 conditions per place. [2023-08-26 21:26:14,063 INFO L140 encePairwiseOnDemand]: 172/182 looper letters, 77 selfloop transitions, 25 changer transitions 3/117 dead transitions. [2023-08-26 21:26:14,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 117 transitions, 1213 flow [2023-08-26 21:26:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:26:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:26:14,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 583 transitions. [2023-08-26 21:26:14,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576138147566719 [2023-08-26 21:26:14,066 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 583 transitions. [2023-08-26 21:26:14,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 583 transitions. [2023-08-26 21:26:14,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:14,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 583 transitions. [2023-08-26 21:26:14,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,070 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,070 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 511 flow. Second operand 7 states and 583 transitions. [2023-08-26 21:26:14,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 117 transitions, 1213 flow [2023-08-26 21:26:14,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 117 transitions, 1213 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:26:14,079 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 630 flow [2023-08-26 21:26:14,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=630, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2023-08-26 21:26:14,080 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 30 predicate places. [2023-08-26 21:26:14,080 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 630 flow [2023-08-26 21:26:14,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:14,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:14,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 21:26:14,081 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:26:14,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:14,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1522834604, now seen corresponding path program 1 times [2023-08-26 21:26:14,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:14,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428619975] [2023-08-26 21:26:14,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:14,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:14,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:14,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428619975] [2023-08-26 21:26:14,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428619975] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:14,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:14,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:26:14,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723625321] [2023-08-26 21:26:14,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:14,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:26:14,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:14,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:26:14,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:26:14,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 182 [2023-08-26 21:26:14,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 630 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:14,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 182 [2023-08-26 21:26:14,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:14,309 INFO L124 PetriNetUnfolderBase]: 624/1208 cut-off events. [2023-08-26 21:26:14,309 INFO L125 PetriNetUnfolderBase]: For 8287/8324 co-relation queries the response was YES. [2023-08-26 21:26:14,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6948 conditions, 1208 events. 624/1208 cut-off events. For 8287/8324 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7138 event pairs, 72 based on Foata normal form. 28/1229 useless extension candidates. Maximal degree in co-relation 6913. Up to 597 conditions per place. [2023-08-26 21:26:14,319 INFO L140 encePairwiseOnDemand]: 178/182 looper letters, 105 selfloop transitions, 8 changer transitions 3/122 dead transitions. [2023-08-26 21:26:14,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 122 transitions, 1445 flow [2023-08-26 21:26:14,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:26:14,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:26:14,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 337 transitions. [2023-08-26 21:26:14,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46291208791208793 [2023-08-26 21:26:14,320 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 337 transitions. [2023-08-26 21:26:14,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 337 transitions. [2023-08-26 21:26:14,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:14,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 337 transitions. [2023-08-26 21:26:14,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,323 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,323 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 630 flow. Second operand 4 states and 337 transitions. [2023-08-26 21:26:14,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 122 transitions, 1445 flow [2023-08-26 21:26:14,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 122 transitions, 1409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:26:14,345 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 662 flow [2023-08-26 21:26:14,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=662, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2023-08-26 21:26:14,345 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2023-08-26 21:26:14,345 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 662 flow [2023-08-26 21:26:14,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:14,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:14,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 21:26:14,346 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:26:14,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:14,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2064521485, now seen corresponding path program 1 times [2023-08-26 21:26:14,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:14,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106351433] [2023-08-26 21:26:14,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:14,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:14,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:14,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:14,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106351433] [2023-08-26 21:26:14,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106351433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:14,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:14,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:26:14,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157992613] [2023-08-26 21:26:14,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:14,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:26:14,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:14,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:26:14,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:26:14,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 182 [2023-08-26 21:26:14,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 662 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:14,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 182 [2023-08-26 21:26:14,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:14,536 INFO L124 PetriNetUnfolderBase]: 429/868 cut-off events. [2023-08-26 21:26:14,537 INFO L125 PetriNetUnfolderBase]: For 6280/6481 co-relation queries the response was YES. [2023-08-26 21:26:14,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4974 conditions, 868 events. 429/868 cut-off events. For 6280/6481 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5323 event pairs, 41 based on Foata normal form. 192/1050 useless extension candidates. Maximal degree in co-relation 4937. Up to 263 conditions per place. [2023-08-26 21:26:14,544 INFO L140 encePairwiseOnDemand]: 175/182 looper letters, 41 selfloop transitions, 13 changer transitions 15/80 dead transitions. [2023-08-26 21:26:14,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 921 flow [2023-08-26 21:26:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:26:14,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:26:14,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-08-26 21:26:14,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46263736263736266 [2023-08-26 21:26:14,546 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-08-26 21:26:14,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-08-26 21:26:14,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:14,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-08-26 21:26:14,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 182.0) internal successors, (1092), 6 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,550 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 182.0) internal successors, (1092), 6 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,550 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 662 flow. Second operand 5 states and 421 transitions. [2023-08-26 21:26:14,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 921 flow [2023-08-26 21:26:14,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 877 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-26 21:26:14,578 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 411 flow [2023-08-26 21:26:14,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=411, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2023-08-26 21:26:14,579 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 27 predicate places. [2023-08-26 21:26:14,579 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 411 flow [2023-08-26 21:26:14,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:14,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:14,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 21:26:14,580 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:26:14,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash 34793920, now seen corresponding path program 2 times [2023-08-26 21:26:14,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:14,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328575675] [2023-08-26 21:26:14,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:14,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:14,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:14,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328575675] [2023-08-26 21:26:14,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328575675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:14,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:14,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:26:14,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730454075] [2023-08-26 21:26:14,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:14,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:26:14,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:14,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:26:14,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:26:14,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 182 [2023-08-26 21:26:14,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:14,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 182 [2023-08-26 21:26:14,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:14,799 INFO L124 PetriNetUnfolderBase]: 362/670 cut-off events. [2023-08-26 21:26:14,800 INFO L125 PetriNetUnfolderBase]: For 3149/3149 co-relation queries the response was YES. [2023-08-26 21:26:14,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3652 conditions, 670 events. 362/670 cut-off events. For 3149/3149 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3184 event pairs, 49 based on Foata normal form. 7/677 useless extension candidates. Maximal degree in co-relation 3618. Up to 233 conditions per place. [2023-08-26 21:26:14,803 INFO L140 encePairwiseOnDemand]: 174/182 looper letters, 34 selfloop transitions, 12 changer transitions 59/105 dead transitions. [2023-08-26 21:26:14,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 105 transitions, 1079 flow [2023-08-26 21:26:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:26:14,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:26:14,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2023-08-26 21:26:14,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43223443223443225 [2023-08-26 21:26:14,805 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2023-08-26 21:26:14,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2023-08-26 21:26:14,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:14,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2023-08-26 21:26:14,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,808 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 182.0) internal successors, (1274), 7 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,808 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 411 flow. Second operand 6 states and 472 transitions. [2023-08-26 21:26:14,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 105 transitions, 1079 flow [2023-08-26 21:26:14,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 105 transitions, 917 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-08-26 21:26:14,820 INFO L231 Difference]: Finished difference. Result has 57 places, 32 transitions, 276 flow [2023-08-26 21:26:14,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=57, PETRI_TRANSITIONS=32} [2023-08-26 21:26:14,821 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 23 predicate places. [2023-08-26 21:26:14,821 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 32 transitions, 276 flow [2023-08-26 21:26:14,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:26:14,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:14,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 21:26:14,822 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:26:14,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:26:14,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1931627330, now seen corresponding path program 1 times [2023-08-26 21:26:14,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:26:14,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486334642] [2023-08-26 21:26:14,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:26:14,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:26:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:26:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:26:14,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:26:14,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486334642] [2023-08-26 21:26:14,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486334642] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:26:14,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:26:14,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:26:14,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671452552] [2023-08-26 21:26:14,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:26:14,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:26:14,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:26:14,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:26:14,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:26:14,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 182 [2023-08-26 21:26:14,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 32 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:14,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:26:14,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 182 [2023-08-26 21:26:14,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:26:15,008 INFO L124 PetriNetUnfolderBase]: 84/182 cut-off events. [2023-08-26 21:26:15,008 INFO L125 PetriNetUnfolderBase]: For 730/751 co-relation queries the response was YES. [2023-08-26 21:26:15,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 182 events. 84/182 cut-off events. For 730/751 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 671 event pairs, 12 based on Foata normal form. 13/188 useless extension candidates. Maximal degree in co-relation 886. Up to 61 conditions per place. [2023-08-26 21:26:15,009 INFO L140 encePairwiseOnDemand]: 176/182 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2023-08-26 21:26:15,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 500 flow [2023-08-26 21:26:15,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:26:15,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:26:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 553 transitions. [2023-08-26 21:26:15,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340659340659341 [2023-08-26 21:26:15,011 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 553 transitions. [2023-08-26 21:26:15,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 553 transitions. [2023-08-26 21:26:15,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:26:15,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 553 transitions. [2023-08-26 21:26:15,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:15,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:15,015 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 182.0) internal successors, (1456), 8 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:15,015 INFO L175 Difference]: Start difference. First operand has 57 places, 32 transitions, 276 flow. Second operand 7 states and 553 transitions. [2023-08-26 21:26:15,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 500 flow [2023-08-26 21:26:15,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 441 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-26 21:26:15,018 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-08-26 21:26:15,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-08-26 21:26:15,018 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-08-26 21:26:15,018 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-08-26 21:26:15,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:26:15,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-26 21:26:15,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-26 21:26:15,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-26 21:26:15,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-26 21:26:15,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-26 21:26:15,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-26 21:26:15,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-26 21:26:15,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-26 21:26:15,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-26 21:26:15,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-26 21:26:15,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-26 21:26:15,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-26 21:26:15,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-26 21:26:15,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-26 21:26:15,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-26 21:26:15,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-26 21:26:15,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 21:26:15,023 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:26:15,028 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 21:26:15,028 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 21:26:15,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:26:15 BasicIcfg [2023-08-26 21:26:15,030 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 21:26:15,031 INFO L158 Benchmark]: Toolchain (without parser) took 7664.09ms. Allocated memory was 459.3MB in the beginning and 713.0MB in the end (delta: 253.8MB). Free memory was 433.8MB in the beginning and 271.0MB in the end (delta: 162.9MB). Peak memory consumption was 418.2MB. Max. memory is 16.0GB. [2023-08-26 21:26:15,031 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 459.3MB. Free memory is still 435.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 21:26:15,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.31ms. Allocated memory is still 459.3MB. Free memory was 433.4MB in the beginning and 413.5MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 21:26:15,032 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.70ms. Allocated memory is still 459.3MB. Free memory was 413.4MB in the beginning and 411.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:26:15,032 INFO L158 Benchmark]: Boogie Preprocessor took 36.76ms. Allocated memory is still 459.3MB. Free memory was 411.4MB in the beginning and 409.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:26:15,032 INFO L158 Benchmark]: RCFGBuilder took 363.85ms. Allocated memory is still 459.3MB. Free memory was 409.8MB in the beginning and 394.0MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-26 21:26:15,032 INFO L158 Benchmark]: TraceAbstraction took 6716.89ms. Allocated memory was 459.3MB in the beginning and 713.0MB in the end (delta: 253.8MB). Free memory was 393.4MB in the beginning and 271.0MB in the end (delta: 122.4MB). Peak memory consumption was 378.3MB. Max. memory is 16.0GB. [2023-08-26 21:26:15,033 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 459.3MB. Free memory is still 435.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 487.31ms. Allocated memory is still 459.3MB. Free memory was 433.4MB in the beginning and 413.5MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.70ms. Allocated memory is still 459.3MB. Free memory was 413.4MB in the beginning and 411.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.76ms. Allocated memory is still 459.3MB. Free memory was 411.4MB in the beginning and 409.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 363.85ms. Allocated memory is still 459.3MB. Free memory was 409.8MB in the beginning and 394.0MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 6716.89ms. Allocated memory was 459.3MB in the beginning and 713.0MB in the end (delta: 253.8MB). Free memory was 393.4MB in the beginning and 271.0MB in the end (delta: 122.4MB). Peak memory consumption was 378.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 98 PlacesBefore, 34 PlacesAfterwards, 91 TransitionsBefore, 25 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 88 TotalNumberOfCompositions, 6520 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3224, independent: 3037, independent conditional: 0, independent unconditional: 3037, dependent: 187, dependent conditional: 0, dependent unconditional: 187, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1294, independent: 1243, independent conditional: 0, independent unconditional: 1243, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3224, independent: 1794, independent conditional: 0, independent unconditional: 1794, dependent: 136, dependent conditional: 0, dependent unconditional: 136, unknown: 1294, unknown conditional: 0, unknown unconditional: 1294] , Statistics on independence cache: Total cache size (in pairs): 105, Positive cache size: 88, Positive conditional cache size: 0, Positive unconditional cache size: 88, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 733]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 733]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 748]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 748]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 763]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 763]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 122 locations, 16 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: 6.6s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 230 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 230 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 766 IncrementalHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 20 mSDtfsCounter, 766 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=662occurred in iteration=11, InterpolantAutomatonStates: 62, 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, 1.4s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 21:26:15,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...