/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/weaver/test-hard1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:10:15,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:10:15,096 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 02:10:15,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:10:15,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:10:15,122 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:10:15,123 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:10:15,123 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:10:15,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:10:15,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:10:15,126 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:10:15,126 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:10:15,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:10:15,127 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:10:15,127 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:10:15,128 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:10:15,128 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:10:15,128 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:10:15,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:10:15,128 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:10:15,128 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:10:15,129 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:10:15,129 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:10:15,129 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:10:15,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:10:15,130 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:10:15,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:10:15,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:10:15,130 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:10:15,130 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:10:15,131 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:10:15,131 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:10:15,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:10:15,131 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:10:15,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:10:15,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:10:15,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:10:15,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:10:15,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:10:15,378 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:10:15,378 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:10:15,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-08-27 02:10:16,287 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:10:16,450 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:10:16,450 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-08-27 02:10:16,455 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7efcaaf06/4b14a760fe3548aea64c20d766cf2a36/FLAG36e3137af [2023-08-27 02:10:16,466 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7efcaaf06/4b14a760fe3548aea64c20d766cf2a36 [2023-08-27 02:10:16,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:10:16,471 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:10:16,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:10:16,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:10:16,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:10:16,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:10:16" (1/1) ... [2023-08-27 02:10:16,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3751e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:16, skipping insertion in model container [2023-08-27 02:10:16,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:10:16" (1/1) ... [2023-08-27 02:10:16,490 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:10:16,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:10:16,594 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:10:16,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:10:16,615 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:10:16,615 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:10:16,619 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:10:16,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:16 WrapperNode [2023-08-27 02:10:16,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:10:16,620 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:10:16,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:10:16,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:10:16,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:16" (1/1) ... [2023-08-27 02:10:16,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:16" (1/1) ... [2023-08-27 02:10:16,653 INFO L138 Inliner]: procedures = 24, calls = 57, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 100 [2023-08-27 02:10:16,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:10:16,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:10:16,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:10:16,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:10:16,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:16" (1/1) ... [2023-08-27 02:10:16,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:16" (1/1) ... [2023-08-27 02:10:16,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:16" (1/1) ... [2023-08-27 02:10:16,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:16" (1/1) ... [2023-08-27 02:10:16,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:16" (1/1) ... [2023-08-27 02:10:16,682 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:16" (1/1) ... [2023-08-27 02:10:16,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:16" (1/1) ... [2023-08-27 02:10:16,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:16" (1/1) ... [2023-08-27 02:10:16,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:10:16,685 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:10:16,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:10:16,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:10:16,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:16" (1/1) ... [2023-08-27 02:10:16,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:10:16,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:10:16,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 02:10:16,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 02:10:16,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:10:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 02:10:16,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 02:10:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 02:10:16,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 02:10:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 02:10:16,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 02:10:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 02:10:16,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 02:10:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:10:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:10:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:10:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 02:10:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 02:10:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:10:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:10:16,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:10:16,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:10:16,742 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 02:10:16,835 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:10:16,836 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:10:17,062 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:10:17,120 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:10:17,121 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 02:10:17,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:10:17 BoogieIcfgContainer [2023-08-27 02:10:17,122 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:10:17,124 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:10:17,124 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:10:17,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:10:17,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:10:16" (1/3) ... [2023-08-27 02:10:17,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f203a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:10:17, skipping insertion in model container [2023-08-27 02:10:17,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:16" (2/3) ... [2023-08-27 02:10:17,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f203a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:10:17, skipping insertion in model container [2023-08-27 02:10:17,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:10:17" (3/3) ... [2023-08-27 02:10:17,127 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2023-08-27 02:10:17,139 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:10:17,139 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 02:10:17,139 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:10:17,222 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 02:10:17,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 142 transitions, 316 flow [2023-08-27 02:10:17,322 INFO L124 PetriNetUnfolderBase]: 10/138 cut-off events. [2023-08-27 02:10:17,322 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 02:10:17,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 10/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 98. Up to 2 conditions per place. [2023-08-27 02:10:17,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 142 transitions, 316 flow [2023-08-27 02:10:17,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 125 transitions, 274 flow [2023-08-27 02:10:17,333 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:10:17,344 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 125 transitions, 274 flow [2023-08-27 02:10:17,346 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 125 transitions, 274 flow [2023-08-27 02:10:17,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 125 transitions, 274 flow [2023-08-27 02:10:17,377 INFO L124 PetriNetUnfolderBase]: 10/125 cut-off events. [2023-08-27 02:10:17,377 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 02:10:17,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 125 events. 10/125 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 98. Up to 2 conditions per place. [2023-08-27 02:10:17,381 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-08-27 02:10:20,631 INFO L134 LiptonReduction]: Checked pairs total: 4840 [2023-08-27 02:10:20,631 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-27 02:10:20,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:10:20,643 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;@6ebf93c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:10:20,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-27 02:10:20,646 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:10:20,646 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2023-08-27 02:10:20,646 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:10:20,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:10:20,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:10:20,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:10:20,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:10:20,650 INFO L85 PathProgramCache]: Analyzing trace with hash 17773958, now seen corresponding path program 1 times [2023-08-27 02:10:20,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:10:20,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260798472] [2023-08-27 02:10:20,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:10:20,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:10:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:10:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:10:20,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:10:20,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260798472] [2023-08-27 02:10:20,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260798472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:10:20,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:10:20,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:10:20,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709545057] [2023-08-27 02:10:20,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:10:20,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 02:10:20,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:10:20,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 02:10:20,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 02:10:20,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 245 [2023-08-27 02:10:20,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:20,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:10:20,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 245 [2023-08-27 02:10:20,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:21,079 INFO L124 PetriNetUnfolderBase]: 2050/2986 cut-off events. [2023-08-27 02:10:21,079 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-08-27 02:10:21,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6063 conditions, 2986 events. 2050/2986 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 16565 event pairs, 1965 based on Foata normal form. 0/1502 useless extension candidates. Maximal degree in co-relation 4942. Up to 2817 conditions per place. [2023-08-27 02:10:21,100 INFO L140 encePairwiseOnDemand]: 241/245 looper letters, 29 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-08-27 02:10:21,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 156 flow [2023-08-27 02:10:21,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 02:10:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 02:10:21,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 263 transitions. [2023-08-27 02:10:21,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536734693877551 [2023-08-27 02:10:21,112 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 263 transitions. [2023-08-27 02:10:21,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 263 transitions. [2023-08-27 02:10:21,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:21,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 263 transitions. [2023-08-27 02:10:21,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,121 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,122 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 106 flow. Second operand 2 states and 263 transitions. [2023-08-27 02:10:21,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 156 flow [2023-08-27 02:10:21,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 140 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 02:10:21,130 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 82 flow [2023-08-27 02:10:21,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-08-27 02:10:21,133 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2023-08-27 02:10:21,133 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 82 flow [2023-08-27 02:10:21,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:10:21,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:10:21,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:10:21,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:10:21,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:10:21,140 INFO L85 PathProgramCache]: Analyzing trace with hash 17773959, now seen corresponding path program 1 times [2023-08-27 02:10:21,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:10:21,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301995428] [2023-08-27 02:10:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:10:21,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:10:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:10:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:10:21,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:10:21,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301995428] [2023-08-27 02:10:21,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301995428] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:10:21,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:10:21,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:10:21,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245626930] [2023-08-27 02:10:21,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:10:21,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:10:21,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:10:21,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:10:21,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:10:21,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 245 [2023-08-27 02:10:21,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:10:21,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 245 [2023-08-27 02:10:21,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:21,410 INFO L124 PetriNetUnfolderBase]: 2407/3330 cut-off events. [2023-08-27 02:10:21,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:10:21,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6604 conditions, 3330 events. 2407/3330 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 16194 event pairs, 1965 based on Foata normal form. 0/2212 useless extension candidates. Maximal degree in co-relation 6601. Up to 3186 conditions per place. [2023-08-27 02:10:21,422 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 30 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-08-27 02:10:21,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 140 flow [2023-08-27 02:10:21,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:10:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:10:21,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-27 02:10:21,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2023-08-27 02:10:21,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-27 02:10:21,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-27 02:10:21,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:21,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-27 02:10:21,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,430 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 82 flow. Second operand 3 states and 357 transitions. [2023-08-27 02:10:21,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 140 flow [2023-08-27 02:10:21,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 140 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 02:10:21,432 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 80 flow [2023-08-27 02:10:21,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-08-27 02:10:21,433 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2023-08-27 02:10:21,434 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 80 flow [2023-08-27 02:10:21,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:10:21,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:10:21,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:10:21,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:10:21,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:10:21,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1159756599, now seen corresponding path program 1 times [2023-08-27 02:10:21,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:10:21,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258301988] [2023-08-27 02:10:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:10:21,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:10:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:10:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:10:21,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:10:21,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258301988] [2023-08-27 02:10:21,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258301988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:10:21,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:10:21,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:10:21,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295512276] [2023-08-27 02:10:21,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:10:21,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:10:21,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:10:21,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:10:21,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:10:21,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 245 [2023-08-27 02:10:21,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:10:21,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 245 [2023-08-27 02:10:21,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:21,716 INFO L124 PetriNetUnfolderBase]: 1345/1872 cut-off events. [2023-08-27 02:10:21,716 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-27 02:10:21,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 1872 events. 1345/1872 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8025 event pairs, 1113 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 3786. Up to 1864 conditions per place. [2023-08-27 02:10:21,725 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 28 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-08-27 02:10:21,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 134 flow [2023-08-27 02:10:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:10:21,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:10:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-08-27 02:10:21,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2023-08-27 02:10:21,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-08-27 02:10:21,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-08-27 02:10:21,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:21,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-08-27 02:10:21,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,728 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 80 flow. Second operand 3 states and 355 transitions. [2023-08-27 02:10:21,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 134 flow [2023-08-27 02:10:21,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 133 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:10:21,730 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 77 flow [2023-08-27 02:10:21,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-08-27 02:10:21,731 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -12 predicate places. [2023-08-27 02:10:21,731 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 77 flow [2023-08-27 02:10:21,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:10:21,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:10:21,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:10:21,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:10:21,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:10:21,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1231370885, now seen corresponding path program 1 times [2023-08-27 02:10:21,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:10:21,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782858693] [2023-08-27 02:10:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:10:21,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:10:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:10:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:10:21,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:10:21,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782858693] [2023-08-27 02:10:21,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782858693] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:10:21,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:10:21,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:10:21,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516191388] [2023-08-27 02:10:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:10:21,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:10:21,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:10:21,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:10:21,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:10:21,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 245 [2023-08-27 02:10:21,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:21,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:10:21,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 245 [2023-08-27 02:10:21,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:22,137 INFO L124 PetriNetUnfolderBase]: 1537/2184 cut-off events. [2023-08-27 02:10:22,137 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-27 02:10:22,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4180 conditions, 2184 events. 1537/2184 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9229 event pairs, 141 based on Foata normal form. 1/1367 useless extension candidates. Maximal degree in co-relation 4176. Up to 1733 conditions per place. [2023-08-27 02:10:22,145 INFO L140 encePairwiseOnDemand]: 239/245 looper letters, 41 selfloop transitions, 5 changer transitions 1/55 dead transitions. [2023-08-27 02:10:22,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 222 flow [2023-08-27 02:10:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:10:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:10:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-08-27 02:10:22,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2023-08-27 02:10:22,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-08-27 02:10:22,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-08-27 02:10:22,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:22,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-08-27 02:10:22,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:22,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:22,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:22,149 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 77 flow. Second operand 3 states and 375 transitions. [2023-08-27 02:10:22,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 222 flow [2023-08-27 02:10:22,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:10:22,150 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 109 flow [2023-08-27 02:10:22,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2023-08-27 02:10:22,151 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -10 predicate places. [2023-08-27 02:10:22,151 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 109 flow [2023-08-27 02:10:22,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:22,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:10:22,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:10:22,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 02:10:22,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:10:22,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:10:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash 801559637, now seen corresponding path program 1 times [2023-08-27 02:10:22,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:10:22,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811214345] [2023-08-27 02:10:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:10:22,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:10:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:10:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:10:22,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:10:22,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811214345] [2023-08-27 02:10:22,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811214345] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:10:22,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:10:22,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:10:22,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66182339] [2023-08-27 02:10:22,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:10:22,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:10:22,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:10:22,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:10:22,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:10:22,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 02:10:22,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:22,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:10:22,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 02:10:22,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:22,760 INFO L124 PetriNetUnfolderBase]: 2729/3838 cut-off events. [2023-08-27 02:10:22,760 INFO L125 PetriNetUnfolderBase]: For 956/956 co-relation queries the response was YES. [2023-08-27 02:10:22,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9118 conditions, 3838 events. 2729/3838 cut-off events. For 956/956 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 19558 event pairs, 856 based on Foata normal form. 40/3874 useless extension candidates. Maximal degree in co-relation 9113. Up to 1800 conditions per place. [2023-08-27 02:10:22,781 INFO L140 encePairwiseOnDemand]: 238/245 looper letters, 88 selfloop transitions, 9 changer transitions 0/101 dead transitions. [2023-08-27 02:10:22,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 101 transitions, 492 flow [2023-08-27 02:10:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:10:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:10:22,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 606 transitions. [2023-08-27 02:10:22,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946938775510204 [2023-08-27 02:10:22,783 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 606 transitions. [2023-08-27 02:10:22,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 606 transitions. [2023-08-27 02:10:22,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:22,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 606 transitions. [2023-08-27 02:10:22,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.2) internal successors, (606), 5 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:22,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:22,787 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:22,787 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 109 flow. Second operand 5 states and 606 transitions. [2023-08-27 02:10:22,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 101 transitions, 492 flow [2023-08-27 02:10:22,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 101 transitions, 479 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:10:22,789 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 168 flow [2023-08-27 02:10:22,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-27 02:10:22,791 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-08-27 02:10:22,791 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 168 flow [2023-08-27 02:10:22,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:22,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:10:22,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:10:22,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 02:10:22,792 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:10:22,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:10:22,792 INFO L85 PathProgramCache]: Analyzing trace with hash -432930337, now seen corresponding path program 2 times [2023-08-27 02:10:22,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:10:22,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826271390] [2023-08-27 02:10:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:10:22,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:10:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:10:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:10:22,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:10:22,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826271390] [2023-08-27 02:10:22,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826271390] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:10:22,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411109594] [2023-08-27 02:10:22,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:10:22,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:10:22,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:10:23,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:10:23,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 02:10:23,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:10:23,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:10:23,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-27 02:10:23,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:10:23,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:10:23,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:10:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:10:23,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411109594] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:10:23,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:10:23,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-27 02:10:23,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694844141] [2023-08-27 02:10:23,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:10:23,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 02:10:23,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:10:23,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 02:10:23,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-08-27 02:10:23,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 245 [2023-08-27 02:10:23,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 168 flow. Second operand has 15 states, 15 states have (on average 97.4) internal successors, (1461), 15 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:23,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:10:23,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 245 [2023-08-27 02:10:23,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:26,067 INFO L124 PetriNetUnfolderBase]: 21095/28358 cut-off events. [2023-08-27 02:10:26,068 INFO L125 PetriNetUnfolderBase]: For 20495/20495 co-relation queries the response was YES. [2023-08-27 02:10:26,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77707 conditions, 28358 events. 21095/28358 cut-off events. For 20495/20495 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 150419 event pairs, 350 based on Foata normal form. 840/29198 useless extension candidates. Maximal degree in co-relation 77699. Up to 7785 conditions per place. [2023-08-27 02:10:26,191 INFO L140 encePairwiseOnDemand]: 233/245 looper letters, 407 selfloop transitions, 127 changer transitions 3/537 dead transitions. [2023-08-27 02:10:26,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 537 transitions, 3055 flow [2023-08-27 02:10:26,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 02:10:26,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 02:10:26,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2610 transitions. [2023-08-27 02:10:26,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631765749778172 [2023-08-27 02:10:26,195 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2610 transitions. [2023-08-27 02:10:26,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2610 transitions. [2023-08-27 02:10:26,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:26,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2610 transitions. [2023-08-27 02:10:26,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 113.47826086956522) internal successors, (2610), 23 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:26,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 245.0) internal successors, (5880), 24 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:26,206 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 245.0) internal successors, (5880), 24 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:26,206 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 168 flow. Second operand 23 states and 2610 transitions. [2023-08-27 02:10:26,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 537 transitions, 3055 flow [2023-08-27 02:10:26,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 537 transitions, 2983 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:10:26,255 INFO L231 Difference]: Finished difference. Result has 81 places, 199 transitions, 1511 flow [2023-08-27 02:10:26,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1511, PETRI_PLACES=81, PETRI_TRANSITIONS=199} [2023-08-27 02:10:26,255 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2023-08-27 02:10:26,255 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 199 transitions, 1511 flow [2023-08-27 02:10:26,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.4) internal successors, (1461), 15 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:26,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:10:26,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:10:26,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 02:10:26,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-27 02:10:26,460 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:10:26,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:10:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1918713104, now seen corresponding path program 1 times [2023-08-27 02:10:26,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:10:26,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712035230] [2023-08-27 02:10:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:10:26,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:10:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:10:26,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:10:26,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:10:26,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712035230] [2023-08-27 02:10:26,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712035230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:10:26,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:10:26,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:10:26,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308972313] [2023-08-27 02:10:26,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:10:26,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:10:26,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:10:26,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:10:26,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:10:26,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 02:10:26,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 199 transitions, 1511 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:26,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:10:26,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 02:10:26,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:27,544 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([486] L112-->L105-1: Formula: (and (not (= (mod v_thread4Thread1of1ForFork2_~cond~3_17 256) 0)) (or (and (= v_~n2~0_67 v_~n2~0_66) (<= v_~n2~0_67 1) (= v_~p2~0_64 v_~p2~0_63)) (and (<= v_~n2~0_67 2147483649) (= (+ v_~n2~0_66 2) v_~n2~0_67) (< 1 v_~n2~0_67) (= (+ (* v_~m~0_61 2) v_~p2~0_64) v_~p2~0_63)))) InVars {~m~0=v_~m~0_61, ~n2~0=v_~n2~0_67, ~p2~0=v_~p2~0_64, thread4Thread1of1ForFork2_~cond~3=v_thread4Thread1of1ForFork2_~cond~3_17} OutVars{~m~0=v_~m~0_61, ~n2~0=v_~n2~0_66, ~p2~0=v_~p2~0_63, thread4Thread1of1ForFork2_~cond~3=v_thread4Thread1of1ForFork2_~cond~3_17} AuxVars[] AssignedVars[~n2~0, ~p2~0][332], [Black: 351#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 357#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 371#(and (or (< 0 ~n2~0) (= (mod thread1Thread1of1ForFork1_~cond~0 256) 0) (and (or (< 0 ~n1~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (<= ~n1~0 0) (< 2147483648 ~n1~0)))) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 367#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), 170#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)), Black: 355#(and (<= ~n2~0 2147483648) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), 44#L48-1true, 157#(<= ~n2~0 2147483647), 134#L93true, 153#(<= ~n1~0 2147483647), 177#true, 393#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)), 121#L132-4true, Black: 161#(= (+ ~p1~0 (* (div ~p2~0 4294967296) 4294967296)) (+ (* (div ~p1~0 4294967296) 4294967296) ~p2~0)), 148#true, 52#thread2EXITtrue, Black: 172#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0) (<= thread1Thread1of1ForFork1_~cond~0 (* (div thread1Thread1of1ForFork1_~cond~0 256) 256)) (< 0 (+ (div thread1Thread1of1ForFork1_~cond~0 256) 1))), Black: 166#(or (and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)) (and (< 0 ~n1~0) (= thread2Thread1of1ForFork3_~cond~1 1))), Black: 369#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), Black: 361#(and (<= ~n2~0 2147483648) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 314#(or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), 31#L105-1true, Black: 373#(and (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 219#(= thread3Thread1of1ForFork0_~cond~2 1), Black: 365#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 182#(and (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 353#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))))]) [2023-08-27 02:10:27,544 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is cut-off event [2023-08-27 02:10:27,544 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2023-08-27 02:10:27,544 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2023-08-27 02:10:27,544 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2023-08-27 02:10:27,827 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([486] L112-->L105-1: Formula: (and (not (= (mod v_thread4Thread1of1ForFork2_~cond~3_17 256) 0)) (or (and (= v_~n2~0_67 v_~n2~0_66) (<= v_~n2~0_67 1) (= v_~p2~0_64 v_~p2~0_63)) (and (<= v_~n2~0_67 2147483649) (= (+ v_~n2~0_66 2) v_~n2~0_67) (< 1 v_~n2~0_67) (= (+ (* v_~m~0_61 2) v_~p2~0_64) v_~p2~0_63)))) InVars {~m~0=v_~m~0_61, ~n2~0=v_~n2~0_67, ~p2~0=v_~p2~0_64, thread4Thread1of1ForFork2_~cond~3=v_thread4Thread1of1ForFork2_~cond~3_17} OutVars{~m~0=v_~m~0_61, ~n2~0=v_~n2~0_66, ~p2~0=v_~p2~0_63, thread4Thread1of1ForFork2_~cond~3=v_thread4Thread1of1ForFork2_~cond~3_17} AuxVars[] AssignedVars[~n2~0, ~p2~0][332], [Black: 351#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 357#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 371#(and (or (< 0 ~n2~0) (= (mod thread1Thread1of1ForFork1_~cond~0 256) 0) (and (or (< 0 ~n1~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (<= ~n1~0 0) (< 2147483648 ~n1~0)))) (= thread3Thread1of1ForFork0_~cond~2 1)), 170#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)), Black: 367#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), Black: 355#(and (<= ~n2~0 2147483648) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), 44#L48-1true, 157#(<= ~n2~0 2147483647), 134#L93true, 153#(<= ~n1~0 2147483647), 177#true, 393#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)), 68#L133-1true, Black: 161#(= (+ ~p1~0 (* (div ~p2~0 4294967296) 4294967296)) (+ (* (div ~p1~0 4294967296) 4294967296) ~p2~0)), 148#true, 52#thread2EXITtrue, Black: 172#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0) (<= thread1Thread1of1ForFork1_~cond~0 (* (div thread1Thread1of1ForFork1_~cond~0 256) 256)) (< 0 (+ (div thread1Thread1of1ForFork1_~cond~0 256) 1))), Black: 166#(or (and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)) (and (< 0 ~n1~0) (= thread2Thread1of1ForFork3_~cond~1 1))), Black: 369#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), Black: 361#(and (<= ~n2~0 2147483648) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), 31#L105-1true, Black: 314#(or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), Black: 373#(and (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 219#(= thread3Thread1of1ForFork0_~cond~2 1), Black: 365#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 182#(and (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 353#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))))]) [2023-08-27 02:10:27,827 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2023-08-27 02:10:27,827 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-27 02:10:27,827 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-27 02:10:27,827 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-27 02:10:28,750 INFO L124 PetriNetUnfolderBase]: 17470/23996 cut-off events. [2023-08-27 02:10:28,751 INFO L125 PetriNetUnfolderBase]: For 116886/118723 co-relation queries the response was YES. [2023-08-27 02:10:28,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96036 conditions, 23996 events. 17470/23996 cut-off events. For 116886/118723 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 141728 event pairs, 2753 based on Foata normal form. 1710/25328 useless extension candidates. Maximal degree in co-relation 96015. Up to 10081 conditions per place. [2023-08-27 02:10:28,933 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 332 selfloop transitions, 102 changer transitions 0/452 dead transitions. [2023-08-27 02:10:28,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 452 transitions, 4164 flow [2023-08-27 02:10:28,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:10:28,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:10:28,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 725 transitions. [2023-08-27 02:10:28,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931972789115646 [2023-08-27 02:10:28,936 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 725 transitions. [2023-08-27 02:10:28,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 725 transitions. [2023-08-27 02:10:28,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:28,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 725 transitions. [2023-08-27 02:10:28,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:28,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:28,940 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:28,940 INFO L175 Difference]: Start difference. First operand has 81 places, 199 transitions, 1511 flow. Second operand 6 states and 725 transitions. [2023-08-27 02:10:28,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 452 transitions, 4164 flow [2023-08-27 02:10:29,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 452 transitions, 3750 flow, removed 195 selfloop flow, removed 1 redundant places. [2023-08-27 02:10:29,290 INFO L231 Difference]: Finished difference. Result has 88 places, 243 transitions, 2039 flow [2023-08-27 02:10:29,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2039, PETRI_PLACES=88, PETRI_TRANSITIONS=243} [2023-08-27 02:10:29,291 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-08-27 02:10:29,291 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 243 transitions, 2039 flow [2023-08-27 02:10:29,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:29,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:10:29,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:10:29,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 02:10:29,291 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:10:29,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:10:29,292 INFO L85 PathProgramCache]: Analyzing trace with hash 769178735, now seen corresponding path program 3 times [2023-08-27 02:10:29,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:10:29,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407736644] [2023-08-27 02:10:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:10:29,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:10:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:10:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:10:29,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:10:29,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407736644] [2023-08-27 02:10:29,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407736644] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:10:29,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777084558] [2023-08-27 02:10:29,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:10:29,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:10:29,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:10:29,549 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:10:29,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 02:10:29,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 02:10:29,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:10:29,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 02:10:29,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:10:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:10:29,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:10:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:10:30,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777084558] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:10:30,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:10:30,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-08-27 02:10:30,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737194649] [2023-08-27 02:10:30,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:10:30,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 02:10:30,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:10:30,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 02:10:30,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-27 02:10:30,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 245 [2023-08-27 02:10:30,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 243 transitions, 2039 flow. Second operand has 16 states, 16 states have (on average 95.625) internal successors, (1530), 16 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:30,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:10:30,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 245 [2023-08-27 02:10:30,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:37,485 INFO L124 PetriNetUnfolderBase]: 53477/72794 cut-off events. [2023-08-27 02:10:37,485 INFO L125 PetriNetUnfolderBase]: For 278310/278310 co-relation queries the response was YES. [2023-08-27 02:10:37,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284643 conditions, 72794 events. 53477/72794 cut-off events. For 278310/278310 co-relation queries the response was YES. Maximal size of possible extension queue 2428. Compared 445864 event pairs, 1096 based on Foata normal form. 2902/75696 useless extension candidates. Maximal degree in co-relation 284618. Up to 13803 conditions per place. [2023-08-27 02:10:38,058 INFO L140 encePairwiseOnDemand]: 230/245 looper letters, 856 selfloop transitions, 629 changer transitions 3/1488 dead transitions. [2023-08-27 02:10:38,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 1488 transitions, 14114 flow [2023-08-27 02:10:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-27 02:10:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-27 02:10:38,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3952 transitions. [2023-08-27 02:10:38,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44807256235827664 [2023-08-27 02:10:38,066 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3952 transitions. [2023-08-27 02:10:38,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3952 transitions. [2023-08-27 02:10:38,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:38,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3952 transitions. [2023-08-27 02:10:38,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 109.77777777777777) internal successors, (3952), 36 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:38,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 245.0) internal successors, (9065), 37 states have internal predecessors, (9065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:38,083 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 245.0) internal successors, (9065), 37 states have internal predecessors, (9065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:38,083 INFO L175 Difference]: Start difference. First operand has 88 places, 243 transitions, 2039 flow. Second operand 36 states and 3952 transitions. [2023-08-27 02:10:38,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 1488 transitions, 14114 flow [2023-08-27 02:10:41,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 1488 transitions, 13317 flow, removed 117 selfloop flow, removed 3 redundant places. [2023-08-27 02:10:41,193 INFO L231 Difference]: Finished difference. Result has 149 places, 793 transitions, 9220 flow [2023-08-27 02:10:41,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1886, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9220, PETRI_PLACES=149, PETRI_TRANSITIONS=793} [2023-08-27 02:10:41,193 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 99 predicate places. [2023-08-27 02:10:41,194 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 793 transitions, 9220 flow [2023-08-27 02:10:41,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 95.625) internal successors, (1530), 16 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:41,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:10:41,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:10:41,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 02:10:41,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-27 02:10:41,399 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:10:41,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:10:41,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1209469846, now seen corresponding path program 1 times [2023-08-27 02:10:41,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:10:41,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166039528] [2023-08-27 02:10:41,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:10:41,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:10:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:10:41,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:10:41,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:10:41,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166039528] [2023-08-27 02:10:41,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166039528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:10:41,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:10:41,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:10:41,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007283295] [2023-08-27 02:10:41,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:10:41,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:10:41,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:10:41,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:10:41,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:10:41,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 02:10:41,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 793 transitions, 9220 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:41,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:10:41,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 02:10:41,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:10:53,748 INFO L124 PetriNetUnfolderBase]: 56962/79088 cut-off events. [2023-08-27 02:10:53,749 INFO L125 PetriNetUnfolderBase]: For 1356191/1365998 co-relation queries the response was YES. [2023-08-27 02:10:54,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483253 conditions, 79088 events. 56962/79088 cut-off events. For 1356191/1365998 co-relation queries the response was YES. Maximal size of possible extension queue 3497. Compared 539706 event pairs, 8624 based on Foata normal form. 9002/87266 useless extension candidates. Maximal degree in co-relation 483201. Up to 37994 conditions per place. [2023-08-27 02:10:54,928 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 1238 selfloop transitions, 256 changer transitions 73/1689 dead transitions. [2023-08-27 02:10:54,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 1689 transitions, 23011 flow [2023-08-27 02:10:54,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:10:54,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:10:54,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 717 transitions. [2023-08-27 02:10:54,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48775510204081635 [2023-08-27 02:10:54,930 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 717 transitions. [2023-08-27 02:10:54,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 717 transitions. [2023-08-27 02:10:54,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:10:54,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 717 transitions. [2023-08-27 02:10:54,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:54,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:54,934 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:10:54,934 INFO L175 Difference]: Start difference. First operand has 149 places, 793 transitions, 9220 flow. Second operand 6 states and 717 transitions. [2023-08-27 02:10:54,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 1689 transitions, 23011 flow [2023-08-27 02:11:18,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 1689 transitions, 22480 flow, removed 228 selfloop flow, removed 2 redundant places. [2023-08-27 02:11:18,940 INFO L231 Difference]: Finished difference. Result has 156 places, 919 transitions, 11228 flow [2023-08-27 02:11:18,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=8935, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11228, PETRI_PLACES=156, PETRI_TRANSITIONS=919} [2023-08-27 02:11:18,941 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 106 predicate places. [2023-08-27 02:11:18,941 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 919 transitions, 11228 flow [2023-08-27 02:11:18,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:11:18,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:11:18,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:11:18,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 02:11:18,942 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:11:18,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:11:18,942 INFO L85 PathProgramCache]: Analyzing trace with hash -805761356, now seen corresponding path program 1 times [2023-08-27 02:11:18,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:11:18,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2855266] [2023-08-27 02:11:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:11:18,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:11:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:11:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:11:19,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:11:19,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2855266] [2023-08-27 02:11:19,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2855266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:11:19,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:11:19,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 02:11:19,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490168084] [2023-08-27 02:11:19,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:11:19,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:11:19,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:11:19,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:11:19,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:11:19,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-08-27 02:11:19,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 919 transitions, 11228 flow. Second operand has 7 states, 7 states have (on average 101.85714285714286) internal successors, (713), 7 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:11:19,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:11:19,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-08-27 02:11:19,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:11:37,143 INFO L124 PetriNetUnfolderBase]: 80103/111208 cut-off events. [2023-08-27 02:11:37,143 INFO L125 PetriNetUnfolderBase]: For 2608179/2608179 co-relation queries the response was YES. [2023-08-27 02:11:38,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767317 conditions, 111208 events. 80103/111208 cut-off events. For 2608179/2608179 co-relation queries the response was YES. Maximal size of possible extension queue 4111. Compared 753661 event pairs, 17280 based on Foata normal form. 836/112044 useless extension candidates. Maximal degree in co-relation 767260. Up to 90250 conditions per place. [2023-08-27 02:11:38,770 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 1154 selfloop transitions, 102 changer transitions 2/1258 dead transitions. [2023-08-27 02:11:38,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1258 transitions, 17953 flow [2023-08-27 02:11:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:11:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:11:38,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2023-08-27 02:11:38,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816326530612245 [2023-08-27 02:11:38,773 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2023-08-27 02:11:38,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2023-08-27 02:11:38,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:11:38,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2023-08-27 02:11:38,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:11:38,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:11:38,776 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:11:38,776 INFO L175 Difference]: Start difference. First operand has 156 places, 919 transitions, 11228 flow. Second operand 6 states and 708 transitions. [2023-08-27 02:11:38,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1258 transitions, 17953 flow [2023-08-27 02:12:46,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 1258 transitions, 17754 flow, removed 88 selfloop flow, removed 1 redundant places. [2023-08-27 02:12:46,265 INFO L231 Difference]: Finished difference. Result has 164 places, 1002 transitions, 12685 flow [2023-08-27 02:12:46,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=11176, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=821, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12685, PETRI_PLACES=164, PETRI_TRANSITIONS=1002} [2023-08-27 02:12:46,266 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 114 predicate places. [2023-08-27 02:12:46,266 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 1002 transitions, 12685 flow [2023-08-27 02:12:46,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.85714285714286) internal successors, (713), 7 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:12:46,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:12:46,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:12:46,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 02:12:46,267 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:12:46,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:12:46,267 INFO L85 PathProgramCache]: Analyzing trace with hash 445085424, now seen corresponding path program 2 times [2023-08-27 02:12:46,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:12:46,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27778078] [2023-08-27 02:12:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:12:46,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:12:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:12:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:12:46,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:12:46,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27778078] [2023-08-27 02:12:46,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27778078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:12:46,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:12:46,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:12:46,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406324577] [2023-08-27 02:12:46,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:12:46,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:12:46,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:12:46,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:12:46,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:12:46,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 02:12:46,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 1002 transitions, 12685 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:12:46,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:12:46,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 02:12:46,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:13:05,291 INFO L124 PetriNetUnfolderBase]: 72807/103821 cut-off events. [2023-08-27 02:13:05,292 INFO L125 PetriNetUnfolderBase]: For 2544259/2557368 co-relation queries the response was YES. [2023-08-27 02:13:06,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737604 conditions, 103821 events. 72807/103821 cut-off events. For 2544259/2557368 co-relation queries the response was YES. Maximal size of possible extension queue 4901. Compared 774490 event pairs, 13449 based on Foata normal form. 11350/114076 useless extension candidates. Maximal degree in co-relation 737543. Up to 44126 conditions per place. [2023-08-27 02:13:06,905 INFO L140 encePairwiseOnDemand]: 238/245 looper letters, 940 selfloop transitions, 331 changer transitions 17/1416 dead transitions. [2023-08-27 02:13:06,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 1416 transitions, 20397 flow [2023-08-27 02:13:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:13:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:13:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 600 transitions. [2023-08-27 02:13:06,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2023-08-27 02:13:06,907 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 600 transitions. [2023-08-27 02:13:06,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 600 transitions. [2023-08-27 02:13:06,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:13:06,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 600 transitions. [2023-08-27 02:13:06,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:13:06,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:13:06,910 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:13:06,910 INFO L175 Difference]: Start difference. First operand has 164 places, 1002 transitions, 12685 flow. Second operand 5 states and 600 transitions. [2023-08-27 02:13:06,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 1416 transitions, 20397 flow [2023-08-27 02:13:54,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1416 transitions, 20312 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 02:13:54,378 INFO L231 Difference]: Finished difference. Result has 170 places, 1039 transitions, 14273 flow [2023-08-27 02:13:54,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=12646, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=14273, PETRI_PLACES=170, PETRI_TRANSITIONS=1039} [2023-08-27 02:13:54,378 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 120 predicate places. [2023-08-27 02:13:54,379 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 1039 transitions, 14273 flow [2023-08-27 02:13:54,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:13:54,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:13:54,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:13:54,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 02:13:54,379 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:13:54,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:13:54,379 INFO L85 PathProgramCache]: Analyzing trace with hash -336846700, now seen corresponding path program 3 times [2023-08-27 02:13:54,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:13:54,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872436070] [2023-08-27 02:13:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:13:54,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:13:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:13:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:13:54,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:13:54,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872436070] [2023-08-27 02:13:54,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872436070] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:13:54,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:13:54,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:13:54,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628354934] [2023-08-27 02:13:54,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:13:54,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:13:54,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:13:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:13:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:13:54,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 02:13:54,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 1039 transitions, 14273 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:13:54,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:13:54,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 02:13:54,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:14:15,819 INFO L124 PetriNetUnfolderBase]: 71047/102304 cut-off events. [2023-08-27 02:14:15,820 INFO L125 PetriNetUnfolderBase]: For 2836932/2850402 co-relation queries the response was YES. [2023-08-27 02:14:17,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770418 conditions, 102304 events. 71047/102304 cut-off events. For 2836932/2850402 co-relation queries the response was YES. Maximal size of possible extension queue 4901. Compared 777960 event pairs, 13918 based on Foata normal form. 12263/113644 useless extension candidates. Maximal degree in co-relation 770354. Up to 45720 conditions per place. [2023-08-27 02:14:17,807 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 941 selfloop transitions, 322 changer transitions 65/1446 dead transitions. [2023-08-27 02:14:17,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1446 transitions, 21988 flow [2023-08-27 02:14:17,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:14:17,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:14:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 602 transitions. [2023-08-27 02:14:17,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49142857142857144 [2023-08-27 02:14:17,809 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 602 transitions. [2023-08-27 02:14:17,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 602 transitions. [2023-08-27 02:14:17,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:14:17,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 602 transitions. [2023-08-27 02:14:17,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.4) internal successors, (602), 5 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:14:17,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:14:17,811 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:14:17,811 INFO L175 Difference]: Start difference. First operand has 170 places, 1039 transitions, 14273 flow. Second operand 5 states and 602 transitions. [2023-08-27 02:14:17,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1446 transitions, 21988 flow [2023-08-27 02:15:15,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1446 transitions, 21641 flow, removed 31 selfloop flow, removed 1 redundant places. [2023-08-27 02:15:15,971 INFO L231 Difference]: Finished difference. Result has 176 places, 1000 transitions, 14454 flow [2023-08-27 02:15:15,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=13478, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1008, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=14454, PETRI_PLACES=176, PETRI_TRANSITIONS=1000} [2023-08-27 02:15:15,972 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 126 predicate places. [2023-08-27 02:15:15,972 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 1000 transitions, 14454 flow [2023-08-27 02:15:15,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:15:15,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:15:15,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:15:15,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 02:15:15,973 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:15:15,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:15:15,973 INFO L85 PathProgramCache]: Analyzing trace with hash -51297320, now seen corresponding path program 4 times [2023-08-27 02:15:15,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:15:15,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161599931] [2023-08-27 02:15:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:15:15,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:15:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:15:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:15:16,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:15:16,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161599931] [2023-08-27 02:15:16,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161599931] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:15:16,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:15:16,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:15:16,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013722853] [2023-08-27 02:15:16,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:15:16,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:15:16,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:15:16,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:15:16,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:15:16,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-08-27 02:15:16,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 1000 transitions, 14454 flow. Second operand has 6 states, 6 states have (on average 102.5) internal successors, (615), 6 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:15:16,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:15:16,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-08-27 02:15:16,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:15:40,899 INFO L124 PetriNetUnfolderBase]: 89448/128415 cut-off events. [2023-08-27 02:15:40,900 INFO L125 PetriNetUnfolderBase]: For 3501473/3501473 co-relation queries the response was YES. [2023-08-27 02:15:42,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991184 conditions, 128415 events. 89448/128415 cut-off events. For 3501473/3501473 co-relation queries the response was YES. Maximal size of possible extension queue 5127. Compared 958171 event pairs, 19541 based on Foata normal form. 1292/129707 useless extension candidates. Maximal degree in co-relation 991117. Up to 96078 conditions per place. [2023-08-27 02:15:43,109 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 1289 selfloop transitions, 118 changer transitions 0/1407 dead transitions. [2023-08-27 02:15:43,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1407 transitions, 24273 flow [2023-08-27 02:15:43,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:15:43,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:15:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 942 transitions. [2023-08-27 02:15:43,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806122448979592 [2023-08-27 02:15:43,111 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 942 transitions. [2023-08-27 02:15:43,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 942 transitions. [2023-08-27 02:15:43,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:15:43,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 942 transitions. [2023-08-27 02:15:43,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.75) internal successors, (942), 8 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:15:43,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:15:43,115 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:15:43,115 INFO L175 Difference]: Start difference. First operand has 176 places, 1000 transitions, 14454 flow. Second operand 8 states and 942 transitions. [2023-08-27 02:15:43,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 1407 transitions, 24273 flow [2023-08-27 02:17:09,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 1407 transitions, 23740 flow, removed 61 selfloop flow, removed 1 redundant places. [2023-08-27 02:17:09,976 INFO L231 Difference]: Finished difference. Result has 186 places, 1053 transitions, 15447 flow [2023-08-27 02:17:09,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=14137, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1000, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=901, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15447, PETRI_PLACES=186, PETRI_TRANSITIONS=1053} [2023-08-27 02:17:09,976 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 136 predicate places. [2023-08-27 02:17:09,977 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 1053 transitions, 15447 flow [2023-08-27 02:17:09,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.5) internal successors, (615), 6 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:09,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:17:09,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:17:09,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 02:17:09,977 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:17:09,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:17:09,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2005107526, now seen corresponding path program 2 times [2023-08-27 02:17:09,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:17:09,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632209691] [2023-08-27 02:17:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:17:09,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:17:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:17:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:17:10,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:17:10,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632209691] [2023-08-27 02:17:10,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632209691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:17:10,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:17:10,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:17:10,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049533756] [2023-08-27 02:17:10,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:17:10,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:17:10,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:17:10,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:17:10,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:17:10,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 245 [2023-08-27 02:17:10,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 1053 transitions, 15447 flow. Second operand has 6 states, 6 states have (on average 97.5) internal successors, (585), 6 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:10,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:17:10,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 245 [2023-08-27 02:17:10,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:17:51,593 INFO L124 PetriNetUnfolderBase]: 134121/197695 cut-off events. [2023-08-27 02:17:51,594 INFO L125 PetriNetUnfolderBase]: For 6364855/6364855 co-relation queries the response was YES. [2023-08-27 02:17:54,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1585632 conditions, 197695 events. 134121/197695 cut-off events. For 6364855/6364855 co-relation queries the response was YES. Maximal size of possible extension queue 8219. Compared 1643948 event pairs, 28216 based on Foata normal form. 2022/199717 useless extension candidates. Maximal degree in co-relation 1585561. Up to 127401 conditions per place. [2023-08-27 02:17:55,095 INFO L140 encePairwiseOnDemand]: 234/245 looper letters, 2028 selfloop transitions, 123 changer transitions 384/2535 dead transitions. [2023-08-27 02:17:55,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 2535 transitions, 44250 flow [2023-08-27 02:17:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:17:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:17:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1021 transitions. [2023-08-27 02:17:55,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46303854875283446 [2023-08-27 02:17:55,097 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1021 transitions. [2023-08-27 02:17:55,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1021 transitions. [2023-08-27 02:17:55,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:17:55,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1021 transitions. [2023-08-27 02:17:55,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 113.44444444444444) internal successors, (1021), 9 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:55,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:55,100 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:17:55,101 INFO L175 Difference]: Start difference. First operand has 186 places, 1053 transitions, 15447 flow. Second operand 9 states and 1021 transitions. [2023-08-27 02:17:55,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 2535 transitions, 44250 flow [2023-08-27 02:21:34,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 2535 transitions, 44007 flow, removed 42 selfloop flow, removed 2 redundant places. [2023-08-27 02:21:34,526 INFO L231 Difference]: Finished difference. Result has 199 places, 1145 transitions, 17838 flow [2023-08-27 02:21:34,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=15334, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1053, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=942, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17838, PETRI_PLACES=199, PETRI_TRANSITIONS=1145} [2023-08-27 02:21:34,527 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 149 predicate places. [2023-08-27 02:21:34,527 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 1145 transitions, 17838 flow [2023-08-27 02:21:34,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.5) internal successors, (585), 6 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:21:34,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:21:34,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:21:34,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 02:21:34,528 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 02:21:34,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:21:34,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1940989760, now seen corresponding path program 2 times [2023-08-27 02:21:34,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:21:34,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112367526] [2023-08-27 02:21:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:21:34,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:21:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:21:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:21:34,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:21:34,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112367526] [2023-08-27 02:21:34,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112367526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:21:34,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:21:34,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 02:21:34,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382192973] [2023-08-27 02:21:34,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:21:34,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:21:34,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:21:34,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:21:34,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:21:34,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 02:21:34,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 1145 transitions, 17838 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:21:34,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:21:34,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 02:21:34,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand