/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 21:03:56,011 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 21:03:56,081 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 21:03:56,085 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 21:03:56,085 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 21:03:56,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 21:03:56,110 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 21:03:56,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 21:03:56,111 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 21:03:56,114 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 21:03:56,115 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 21:03:56,115 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 21:03:56,115 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 21:03:56,116 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 21:03:56,116 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 21:03:56,116 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 21:03:56,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 21:03:56,116 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 21:03:56,117 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 21:03:56,117 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 21:03:56,117 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 21:03:56,118 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 21:03:56,118 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 21:03:56,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 21:03:56,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 21:03:56,118 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 21:03:56,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 21:03:56,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:03:56,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 21:03:56,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 21:03:56,120 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 21:03:56,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 21:03:56,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 21:03:56,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 21:03:56,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 21:03:56,120 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 21:03:56,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 21:03:56,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 21:03:56,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 21:03:56,384 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 21:03:56,386 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 21:03:56,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-08-26 21:03:57,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 21:03:57,590 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 21:03:57,590 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-08-26 21:03:57,608 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2857b01c9/4ad7e082992b4ecea97d862c3527b9b7/FLAG25a49592c [2023-08-26 21:03:57,618 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2857b01c9/4ad7e082992b4ecea97d862c3527b9b7 [2023-08-26 21:03:57,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 21:03:57,622 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 21:03:57,624 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 21:03:57,624 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 21:03:57,626 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 21:03:57,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:03:57" (1/1) ... [2023-08-26 21:03:57,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4eedc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:03:57, skipping insertion in model container [2023-08-26 21:03:57,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:03:57" (1/1) ... [2023-08-26 21:03:57,666 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 21:03:57,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:03:57,909 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 21:03:57,931 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-26 21:03:57,932 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-26 21:03:57,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:03:57,972 INFO L206 MainTranslator]: Completed translation [2023-08-26 21:03:57,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:03:57 WrapperNode [2023-08-26 21:03:57,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 21:03:57,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 21:03:57,973 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 21:03:57,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 21:03:57,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:03:57" (1/1) ... [2023-08-26 21:03:58,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:03:57" (1/1) ... [2023-08-26 21:03:58,021 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 115 [2023-08-26 21:03:58,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 21:03:58,022 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 21:03:58,022 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 21:03:58,022 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 21:03:58,028 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:03:57" (1/1) ... [2023-08-26 21:03:58,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:03:57" (1/1) ... [2023-08-26 21:03:58,038 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:03:57" (1/1) ... [2023-08-26 21:03:58,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:03:57" (1/1) ... [2023-08-26 21:03:58,044 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:03:57" (1/1) ... [2023-08-26 21:03:58,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:03:57" (1/1) ... [2023-08-26 21:03:58,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:03:57" (1/1) ... [2023-08-26 21:03:58,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:03:57" (1/1) ... [2023-08-26 21:03:58,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 21:03:58,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 21:03:58,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 21:03:58,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 21:03:58,050 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:03:57" (1/1) ... [2023-08-26 21:03:58,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:03:58,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:03:58,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 21:03:58,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 21:03:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 21:03:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-26 21:03:58,118 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-26 21:03:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 21:03:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 21:03:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 21:03:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 21:03:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 21:03:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 21:03:58,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 21:03:58,120 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 21:03:58,200 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 21:03:58,201 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 21:03:58,420 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 21:03:58,503 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 21:03:58,503 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-26 21:03:58,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:03:58 BoogieIcfgContainer [2023-08-26 21:03:58,505 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 21:03:58,507 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 21:03:58,507 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 21:03:58,509 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 21:03:58,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:03:57" (1/3) ... [2023-08-26 21:03:58,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3847e5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:03:58, skipping insertion in model container [2023-08-26 21:03:58,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:03:57" (2/3) ... [2023-08-26 21:03:58,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3847e5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:03:58, skipping insertion in model container [2023-08-26 21:03:58,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:03:58" (3/3) ... [2023-08-26 21:03:58,512 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2023-08-26 21:03:58,523 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 21:03:58,523 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-26 21:03:58,523 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 21:03:58,601 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:03:58,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 109 transitions, 223 flow [2023-08-26 21:03:58,683 INFO L124 PetriNetUnfolderBase]: 11/119 cut-off events. [2023-08-26 21:03:58,683 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:03:58,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 119 events. 11/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 151 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2023-08-26 21:03:58,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 109 transitions, 223 flow [2023-08-26 21:03:58,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 109 transitions, 223 flow [2023-08-26 21:03:58,696 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:03:58,706 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 109 transitions, 223 flow [2023-08-26 21:03:58,708 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 109 transitions, 223 flow [2023-08-26 21:03:58,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 109 transitions, 223 flow [2023-08-26 21:03:58,723 INFO L124 PetriNetUnfolderBase]: 11/119 cut-off events. [2023-08-26 21:03:58,723 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:03:58,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 119 events. 11/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 151 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2023-08-26 21:03:58,726 INFO L119 LiptonReduction]: Number of co-enabled transitions 2080 [2023-08-26 21:04:00,075 INFO L134 LiptonReduction]: Checked pairs total: 3059 [2023-08-26 21:04:00,075 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-08-26 21:04:00,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:04:00,088 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;@4b2aa4a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:04:00,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-26 21:04:00,090 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:04:00,090 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-26 21:04:00,090 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:04:00,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:04:00,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:04:00,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-26 21:04:00,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:04:00,093 INFO L85 PathProgramCache]: Analyzing trace with hash 523902089, now seen corresponding path program 1 times [2023-08-26 21:04:00,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:04:00,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46633601] [2023-08-26 21:04:00,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:04:00,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:04:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:04:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:04:00,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:04:00,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46633601] [2023-08-26 21:04:00,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46633601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:04:00,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:04:00,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:04:00,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333204145] [2023-08-26 21:04:00,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:04:00,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 21:04:00,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:04:00,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 21:04:00,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 21:04:00,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 211 [2023-08-26 21:04:00,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 79 flow. Second operand has 2 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:00,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:04:00,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 211 [2023-08-26 21:04:00,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:04:00,281 INFO L124 PetriNetUnfolderBase]: 43/115 cut-off events. [2023-08-26 21:04:00,281 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:04:00,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 115 events. 43/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 280 event pairs, 37 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 209. Up to 105 conditions per place. [2023-08-26 21:04:00,283 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 24 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2023-08-26 21:04:00,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 113 flow [2023-08-26 21:04:00,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 21:04:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 21:04:00,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 211 transitions. [2023-08-26 21:04:00,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-26 21:04:00,294 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 211 transitions. [2023-08-26 21:04:00,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 211 transitions. [2023-08-26 21:04:00,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:04:00,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 211 transitions. [2023-08-26 21:04:00,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:00,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:00,304 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:00,305 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 79 flow. Second operand 2 states and 211 transitions. [2023-08-26 21:04:00,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 113 flow [2023-08-26 21:04:00,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:04:00,308 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 65 flow [2023-08-26 21:04:00,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=65, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2023-08-26 21:04:00,312 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-08-26 21:04:00,312 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 65 flow [2023-08-26 21:04:00,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:00,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:04:00,312 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 21:04:00,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 21:04:00,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-26 21:04:00,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:04:00,318 INFO L85 PathProgramCache]: Analyzing trace with hash -938808433, now seen corresponding path program 1 times [2023-08-26 21:04:00,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:04:00,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310511257] [2023-08-26 21:04:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:04:00,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:04:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:04:00,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 21:04:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:04:00,372 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 21:04:00,372 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 21:04:00,373 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-08-26 21:04:00,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-08-26 21:04:00,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-08-26 21:04:00,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-08-26 21:04:00,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-08-26 21:04:00,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-08-26 21:04:00,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-08-26 21:04:00,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-08-26 21:04:00,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-08-26 21:04:00,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-08-26 21:04:00,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-08-26 21:04:00,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (11 of 23 remaining) [2023-08-26 21:04:00,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-08-26 21:04:00,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-08-26 21:04:00,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-08-26 21:04:00,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-08-26 21:04:00,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-08-26 21:04:00,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-08-26 21:04:00,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-08-26 21:04:00,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-08-26 21:04:00,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-08-26 21:04:00,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-08-26 21:04:00,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (0 of 23 remaining) [2023-08-26 21:04:00,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 21:04:00,385 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 21:04:00,387 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 21:04:00,387 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 21:04:00,448 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:04:00,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 190 transitions, 392 flow [2023-08-26 21:04:00,478 INFO L124 PetriNetUnfolderBase]: 21/212 cut-off events. [2023-08-26 21:04:00,478 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 21:04:00,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 21/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 560 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 172. Up to 6 conditions per place. [2023-08-26 21:04:00,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 190 transitions, 392 flow [2023-08-26 21:04:00,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 190 transitions, 392 flow [2023-08-26 21:04:00,484 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:04:00,484 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 190 transitions, 392 flow [2023-08-26 21:04:00,484 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 190 transitions, 392 flow [2023-08-26 21:04:00,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 190 transitions, 392 flow [2023-08-26 21:04:00,504 INFO L124 PetriNetUnfolderBase]: 21/212 cut-off events. [2023-08-26 21:04:00,505 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 21:04:00,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 21/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 560 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 172. Up to 6 conditions per place. [2023-08-26 21:04:00,512 INFO L119 LiptonReduction]: Number of co-enabled transitions 17120 [2023-08-26 21:04:02,161 INFO L134 LiptonReduction]: Checked pairs total: 36376 [2023-08-26 21:04:02,162 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-26 21:04:02,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:04:02,164 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;@4b2aa4a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:04:02,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-08-26 21:04:02,166 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:04:02,167 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-26 21:04:02,167 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 21:04:02,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:04:02,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:04:02,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 21:04:02,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:04:02,167 INFO L85 PathProgramCache]: Analyzing trace with hash -229022498, now seen corresponding path program 1 times [2023-08-26 21:04:02,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:04:02,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580927690] [2023-08-26 21:04:02,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:04:02,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:04:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:04:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:04:02,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:04:02,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580927690] [2023-08-26 21:04:02,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580927690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:04:02,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:04:02,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:04:02,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920703138] [2023-08-26 21:04:02,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:04:02,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:04:02,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:04:02,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:04:02,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:04:02,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 343 [2023-08-26 21:04:02,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 74 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:02,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:04:02,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 343 [2023-08-26 21:04:02,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:04:02,569 INFO L124 PetriNetUnfolderBase]: 1740/2909 cut-off events. [2023-08-26 21:04:02,569 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-26 21:04:02,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5773 conditions, 2909 events. 1740/2909 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17736 event pairs, 807 based on Foata normal form. 0/2078 useless extension candidates. Maximal degree in co-relation 5228. Up to 2762 conditions per place. [2023-08-26 21:04:02,582 INFO L140 encePairwiseOnDemand]: 323/343 looper letters, 53 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2023-08-26 21:04:02,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 67 transitions, 263 flow [2023-08-26 21:04:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:04:02,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:04:02,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-08-26 21:04:02,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257531584062196 [2023-08-26 21:04:02,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-08-26 21:04:02,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-08-26 21:04:02,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:04:02,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-08-26 21:04:02,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:02,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:02,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:02,592 INFO L175 Difference]: Start difference. First operand has 71 places, 74 transitions, 160 flow. Second operand 3 states and 541 transitions. [2023-08-26 21:04:02,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 67 transitions, 263 flow [2023-08-26 21:04:02,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 67 transitions, 261 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-26 21:04:02,594 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 161 flow [2023-08-26 21:04:02,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2023-08-26 21:04:02,595 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -8 predicate places. [2023-08-26 21:04:02,595 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 161 flow [2023-08-26 21:04:02,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:02,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:04:02,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:04:02,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 21:04:02,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 21:04:02,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:04:02,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1894874561, now seen corresponding path program 1 times [2023-08-26 21:04:02,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:04:02,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851241154] [2023-08-26 21:04:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:04:02,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:04:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:04:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:04:02,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:04:02,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851241154] [2023-08-26 21:04:02,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851241154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:04:02,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:04:02,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:04:02,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927015699] [2023-08-26 21:04:02,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:04:02,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:04:02,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:04:02,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:04:02,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:04:02,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 343 [2023-08-26 21:04:02,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:02,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:04:02,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 343 [2023-08-26 21:04:02,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:04:02,971 INFO L124 PetriNetUnfolderBase]: 1681/2858 cut-off events. [2023-08-26 21:04:02,971 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2023-08-26 21:04:02,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6062 conditions, 2858 events. 1681/2858 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17948 event pairs, 1366 based on Foata normal form. 46/2071 useless extension candidates. Maximal degree in co-relation 4776. Up to 2618 conditions per place. [2023-08-26 21:04:02,984 INFO L140 encePairwiseOnDemand]: 341/343 looper letters, 74 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2023-08-26 21:04:02,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 86 transitions, 370 flow [2023-08-26 21:04:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:04:02,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:04:02,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-08-26 21:04:02,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150631681243926 [2023-08-26 21:04:02,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-08-26 21:04:02,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-08-26 21:04:02,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:04:02,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-08-26 21:04:02,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:02,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:02,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:02,988 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 161 flow. Second operand 3 states and 530 transitions. [2023-08-26 21:04:02,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 86 transitions, 370 flow [2023-08-26 21:04:02,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 86 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:04:02,993 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 158 flow [2023-08-26 21:04:02,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-08-26 21:04:02,995 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2023-08-26 21:04:02,995 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 158 flow [2023-08-26 21:04:02,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:02,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:04:02,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:04:02,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 21:04:02,996 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 21:04:02,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:04:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1894820156, now seen corresponding path program 1 times [2023-08-26 21:04:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:04:02,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508169657] [2023-08-26 21:04:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:04:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:04:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:04:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:04:03,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:04:03,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508169657] [2023-08-26 21:04:03,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508169657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:04:03,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:04:03,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:04:03,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365756284] [2023-08-26 21:04:03,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:04:03,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:04:03,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:04:03,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:04:03,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:04:03,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 343 [2023-08-26 21:04:03,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:03,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:04:03,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 343 [2023-08-26 21:04:03,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:04:03,491 INFO L124 PetriNetUnfolderBase]: 2050/3477 cut-off events. [2023-08-26 21:04:03,491 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2023-08-26 21:04:03,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7489 conditions, 3477 events. 2050/3477 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 22097 event pairs, 578 based on Foata normal form. 12/2557 useless extension candidates. Maximal degree in co-relation 7179. Up to 3084 conditions per place. [2023-08-26 21:04:03,506 INFO L140 encePairwiseOnDemand]: 331/343 looper letters, 96 selfloop transitions, 11 changer transitions 0/115 dead transitions. [2023-08-26 21:04:03,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 115 transitions, 522 flow [2023-08-26 21:04:03,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:04:03,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:04:03,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 852 transitions. [2023-08-26 21:04:03,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4139941690962099 [2023-08-26 21:04:03,523 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 852 transitions. [2023-08-26 21:04:03,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 852 transitions. [2023-08-26 21:04:03,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:04:03,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 852 transitions. [2023-08-26 21:04:03,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:03,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 343.0) internal successors, (2401), 7 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:03,528 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 343.0) internal successors, (2401), 7 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:03,528 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 158 flow. Second operand 6 states and 852 transitions. [2023-08-26 21:04:03,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 115 transitions, 522 flow [2023-08-26 21:04:03,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 115 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:04:03,530 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 240 flow [2023-08-26 21:04:03,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2023-08-26 21:04:03,531 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 0 predicate places. [2023-08-26 21:04:03,531 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 240 flow [2023-08-26 21:04:03,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:03,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:04:03,532 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 21:04:03,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 21:04:03,532 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-26 21:04:03,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:04:03,532 INFO L85 PathProgramCache]: Analyzing trace with hash -647472918, now seen corresponding path program 1 times [2023-08-26 21:04:03,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:04:03,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429478951] [2023-08-26 21:04:03,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:04:03,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:04:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:04:03,540 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 21:04:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:04:03,547 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 21:04:03,547 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 21:04:03,547 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 34 remaining) [2023-08-26 21:04:03,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 34 remaining) [2023-08-26 21:04:03,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 34 remaining) [2023-08-26 21:04:03,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 34 remaining) [2023-08-26 21:04:03,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 34 remaining) [2023-08-26 21:04:03,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 34 remaining) [2023-08-26 21:04:03,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 34 remaining) [2023-08-26 21:04:03,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 34 remaining) [2023-08-26 21:04:03,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 34 remaining) [2023-08-26 21:04:03,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 34 remaining) [2023-08-26 21:04:03,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 34 remaining) [2023-08-26 21:04:03,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (22 of 34 remaining) [2023-08-26 21:04:03,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 34 remaining) [2023-08-26 21:04:03,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 34 remaining) [2023-08-26 21:04:03,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 34 remaining) [2023-08-26 21:04:03,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 34 remaining) [2023-08-26 21:04:03,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 34 remaining) [2023-08-26 21:04:03,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 34 remaining) [2023-08-26 21:04:03,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 34 remaining) [2023-08-26 21:04:03,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 34 remaining) [2023-08-26 21:04:03,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 34 remaining) [2023-08-26 21:04:03,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 34 remaining) [2023-08-26 21:04:03,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (11 of 34 remaining) [2023-08-26 21:04:03,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 34 remaining) [2023-08-26 21:04:03,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 34 remaining) [2023-08-26 21:04:03,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 34 remaining) [2023-08-26 21:04:03,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 34 remaining) [2023-08-26 21:04:03,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 34 remaining) [2023-08-26 21:04:03,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 34 remaining) [2023-08-26 21:04:03,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 34 remaining) [2023-08-26 21:04:03,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 34 remaining) [2023-08-26 21:04:03,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 34 remaining) [2023-08-26 21:04:03,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 34 remaining) [2023-08-26 21:04:03,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (0 of 34 remaining) [2023-08-26 21:04:03,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 21:04:03,551 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-26 21:04:03,552 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 21:04:03,552 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 21:04:03,586 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:04:03,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 271 transitions, 563 flow [2023-08-26 21:04:03,616 INFO L124 PetriNetUnfolderBase]: 31/305 cut-off events. [2023-08-26 21:04:03,616 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 21:04:03,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 305 events. 31/305 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1042 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 252. Up to 8 conditions per place. [2023-08-26 21:04:03,619 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 271 transitions, 563 flow [2023-08-26 21:04:03,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 271 transitions, 563 flow [2023-08-26 21:04:03,622 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:04:03,622 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 271 transitions, 563 flow [2023-08-26 21:04:03,622 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 271 transitions, 563 flow [2023-08-26 21:04:03,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 271 transitions, 563 flow [2023-08-26 21:04:03,650 INFO L124 PetriNetUnfolderBase]: 31/305 cut-off events. [2023-08-26 21:04:03,651 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 21:04:03,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 305 events. 31/305 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1042 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 252. Up to 8 conditions per place. [2023-08-26 21:04:03,667 INFO L119 LiptonReduction]: Number of co-enabled transitions 45120 [2023-08-26 21:04:05,787 INFO L134 LiptonReduction]: Checked pairs total: 102602 [2023-08-26 21:04:05,787 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-08-26 21:04:05,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:04:05,788 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;@4b2aa4a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:04:05,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2023-08-26 21:04:05,790 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:04:05,790 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-26 21:04:05,790 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 21:04:05,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:04:05,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:04:05,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-08-26 21:04:05,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:04:05,791 INFO L85 PathProgramCache]: Analyzing trace with hash 262943346, now seen corresponding path program 1 times [2023-08-26 21:04:05,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:04:05,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008386968] [2023-08-26 21:04:05,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:04:05,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:04:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:04:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:04:05,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:04:05,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008386968] [2023-08-26 21:04:05,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008386968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:04:05,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:04:05,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:04:05,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343975149] [2023-08-26 21:04:05,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:04:05,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:04:05,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:04:05,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:04:05,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:04:05,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 492 [2023-08-26 21:04:05,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 112 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:05,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:04:05,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 492 [2023-08-26 21:04:05,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:04:10,523 INFO L124 PetriNetUnfolderBase]: 55904/78033 cut-off events. [2023-08-26 21:04:10,523 INFO L125 PetriNetUnfolderBase]: For 2608/2608 co-relation queries the response was YES. [2023-08-26 21:04:10,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156780 conditions, 78033 events. 55904/78033 cut-off events. For 2608/2608 co-relation queries the response was YES. Maximal size of possible extension queue 2335. Compared 559259 event pairs, 34217 based on Foata normal form. 0/54050 useless extension candidates. Maximal degree in co-relation 135267. Up to 76914 conditions per place. [2023-08-26 21:04:10,935 INFO L140 encePairwiseOnDemand]: 460/492 looper letters, 76 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-26 21:04:10,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 96 transitions, 385 flow [2023-08-26 21:04:10,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:04:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:04:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2023-08-26 21:04:10,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5250677506775068 [2023-08-26 21:04:10,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2023-08-26 21:04:10,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2023-08-26 21:04:10,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:04:10,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2023-08-26 21:04:10,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:10,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 492.0) internal successors, (1968), 4 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:10,941 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 492.0) internal successors, (1968), 4 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:10,941 INFO L175 Difference]: Start difference. First operand has 106 places, 112 transitions, 245 flow. Second operand 3 states and 775 transitions. [2023-08-26 21:04:10,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 96 transitions, 385 flow [2023-08-26 21:04:10,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 96 transitions, 377 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-26 21:04:10,946 INFO L231 Difference]: Finished difference. Result has 90 places, 90 transitions, 231 flow [2023-08-26 21:04:10,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=492, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=90, PETRI_TRANSITIONS=90} [2023-08-26 21:04:10,947 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, -16 predicate places. [2023-08-26 21:04:10,947 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 90 transitions, 231 flow [2023-08-26 21:04:10,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:10,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:04:10,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:04:10,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 21:04:10,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-08-26 21:04:10,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:04:10,948 INFO L85 PathProgramCache]: Analyzing trace with hash -673564493, now seen corresponding path program 1 times [2023-08-26 21:04:10,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:04:10,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128388293] [2023-08-26 21:04:10,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:04:10,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:04:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:04:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:04:11,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:04:11,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128388293] [2023-08-26 21:04:11,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128388293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:04:11,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:04:11,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:04:11,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132861375] [2023-08-26 21:04:11,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:04:11,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:04:11,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:04:11,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:04:11,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:04:11,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 492 [2023-08-26 21:04:11,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 90 transitions, 231 flow. Second operand has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:11,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:04:11,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 492 [2023-08-26 21:04:11,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:04:17,057 INFO L124 PetriNetUnfolderBase]: 70966/99461 cut-off events. [2023-08-26 21:04:17,057 INFO L125 PetriNetUnfolderBase]: For 4906/4906 co-relation queries the response was YES. [2023-08-26 21:04:17,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213517 conditions, 99461 events. 70966/99461 cut-off events. For 4906/4906 co-relation queries the response was YES. Maximal size of possible extension queue 2877. Compared 725829 event pairs, 30596 based on Foata normal form. 0/69952 useless extension candidates. Maximal degree in co-relation 204124. Up to 93711 conditions per place. [2023-08-26 21:04:17,754 INFO L140 encePairwiseOnDemand]: 480/492 looper letters, 155 selfloop transitions, 14 changer transitions 0/181 dead transitions. [2023-08-26 21:04:17,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 181 transitions, 839 flow [2023-08-26 21:04:17,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:04:17,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:04:17,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1255 transitions. [2023-08-26 21:04:17,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42513550135501355 [2023-08-26 21:04:17,757 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1255 transitions. [2023-08-26 21:04:17,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1255 transitions. [2023-08-26 21:04:17,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:04:17,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1255 transitions. [2023-08-26 21:04:17,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.16666666666666) internal successors, (1255), 6 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:17,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 492.0) internal successors, (3444), 7 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:17,763 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 492.0) internal successors, (3444), 7 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:17,763 INFO L175 Difference]: Start difference. First operand has 90 places, 90 transitions, 231 flow. Second operand 6 states and 1255 transitions. [2023-08-26 21:04:17,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 181 transitions, 839 flow [2023-08-26 21:04:17,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 181 transitions, 835 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:04:17,777 INFO L231 Difference]: Finished difference. Result has 97 places, 100 transitions, 329 flow [2023-08-26 21:04:17,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=492, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=329, PETRI_PLACES=97, PETRI_TRANSITIONS=100} [2023-08-26 21:04:17,778 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, -9 predicate places. [2023-08-26 21:04:17,778 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 100 transitions, 329 flow [2023-08-26 21:04:17,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:17,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:04:17,780 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:04:17,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 21:04:17,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-08-26 21:04:17,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:04:17,780 INFO L85 PathProgramCache]: Analyzing trace with hash 535652783, now seen corresponding path program 1 times [2023-08-26 21:04:17,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:04:17,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624334235] [2023-08-26 21:04:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:04:17,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:04:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:04:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:04:17,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:04:17,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624334235] [2023-08-26 21:04:17,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624334235] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 21:04:17,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296822139] [2023-08-26 21:04:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:04:17,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 21:04:17,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:04:17,954 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) [2023-08-26 21:04:17,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 21:04:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:04:18,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-26 21:04:18,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 21:04:18,083 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 21:04:18,122 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 21:04:18,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 21:04:18,154 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 21:04:18,176 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 21:04:18,206 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-26 21:04:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:04:18,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 21:04:18,243 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_103 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_103) |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.offset|)))) is different from false [2023-08-26 21:04:18,301 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 21:04:18,301 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 57 [2023-08-26 21:04:18,312 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 21:04:18,313 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-08-26 21:04:18,356 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 49 [2023-08-26 21:04:18,360 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-26 21:04:18,378 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-26 21:04:18,386 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2023-08-26 21:04:18,390 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2023-08-26 21:04:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-26 21:04:18,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296822139] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 21:04:18,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 21:04:18,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-08-26 21:04:18,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439909747] [2023-08-26 21:04:18,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 21:04:18,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 21:04:18,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:04:18,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 21:04:18,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=197, Unknown=1, NotChecked=28, Total=272 [2023-08-26 21:04:18,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 492 [2023-08-26 21:04:18,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 100 transitions, 329 flow. Second operand has 17 states, 17 states have (on average 158.58823529411765) internal successors, (2696), 17 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:18,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:04:18,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 492 [2023-08-26 21:04:18,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:04:32,557 INFO L124 PetriNetUnfolderBase]: 124582/177831 cut-off events. [2023-08-26 21:04:32,558 INFO L125 PetriNetUnfolderBase]: For 125006/125061 co-relation queries the response was YES. [2023-08-26 21:04:32,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468738 conditions, 177831 events. 124582/177831 cut-off events. For 125006/125061 co-relation queries the response was YES. Maximal size of possible extension queue 5228. Compared 1388362 event pairs, 22040 based on Foata normal form. 1721/142382 useless extension candidates. Maximal degree in co-relation 466313. Up to 108470 conditions per place. [2023-08-26 21:04:33,639 INFO L140 encePairwiseOnDemand]: 425/492 looper letters, 938 selfloop transitions, 259 changer transitions 0/1205 dead transitions. [2023-08-26 21:04:33,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 1205 transitions, 5837 flow [2023-08-26 21:04:33,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-26 21:04:33,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-26 21:04:33,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6144 transitions. [2023-08-26 21:04:33,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4028324154209284 [2023-08-26 21:04:33,652 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 6144 transitions. [2023-08-26 21:04:33,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 6144 transitions. [2023-08-26 21:04:33,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:04:33,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 6144 transitions. [2023-08-26 21:04:33,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 198.19354838709677) internal successors, (6144), 31 states have internal predecessors, (6144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:33,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 492.0) internal successors, (15744), 32 states have internal predecessors, (15744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:33,677 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 492.0) internal successors, (15744), 32 states have internal predecessors, (15744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:33,677 INFO L175 Difference]: Start difference. First operand has 97 places, 100 transitions, 329 flow. Second operand 31 states and 6144 transitions. [2023-08-26 21:04:33,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 1205 transitions, 5837 flow [2023-08-26 21:04:33,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 1205 transitions, 5831 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:04:33,787 INFO L231 Difference]: Finished difference. Result has 153 places, 389 transitions, 3021 flow [2023-08-26 21:04:33,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=492, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3021, PETRI_PLACES=153, PETRI_TRANSITIONS=389} [2023-08-26 21:04:33,787 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 47 predicate places. [2023-08-26 21:04:33,787 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 389 transitions, 3021 flow [2023-08-26 21:04:33,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 158.58823529411765) internal successors, (2696), 17 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:33,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:04:33,788 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:04:33,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 21:04:33,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 21:04:33,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-08-26 21:04:33,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:04:33,993 INFO L85 PathProgramCache]: Analyzing trace with hash 873094348, now seen corresponding path program 1 times [2023-08-26 21:04:33,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:04:33,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550666724] [2023-08-26 21:04:33,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:04:33,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:04:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:04:34,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 21:04:34,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:04:34,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550666724] [2023-08-26 21:04:34,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550666724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:04:34,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:04:34,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:04:34,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775494216] [2023-08-26 21:04:34,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:04:34,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:04:34,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:04:34,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:04:34,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:04:34,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 492 [2023-08-26 21:04:34,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 389 transitions, 3021 flow. Second operand has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:34,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:04:34,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 492 [2023-08-26 21:04:34,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:04:47,137 INFO L124 PetriNetUnfolderBase]: 75469/107398 cut-off events. [2023-08-26 21:04:47,138 INFO L125 PetriNetUnfolderBase]: For 2071654/2078553 co-relation queries the response was YES. [2023-08-26 21:04:48,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643560 conditions, 107398 events. 75469/107398 cut-off events. For 2071654/2078553 co-relation queries the response was YES. Maximal size of possible extension queue 3030. Compared 786411 event pairs, 34208 based on Foata normal form. 5190/95785 useless extension candidates. Maximal degree in co-relation 603508. Up to 100351 conditions per place. [2023-08-26 21:04:48,585 INFO L140 encePairwiseOnDemand]: 482/492 looper letters, 207 selfloop transitions, 6 changer transitions 0/236 dead transitions. [2023-08-26 21:04:48,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 236 transitions, 2210 flow [2023-08-26 21:04:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:04:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:04:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 948 transitions. [2023-08-26 21:04:48,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817073170731707 [2023-08-26 21:04:48,588 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 948 transitions. [2023-08-26 21:04:48,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 948 transitions. [2023-08-26 21:04:48,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:04:48,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 948 transitions. [2023-08-26 21:04:48,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:48,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 492.0) internal successors, (2460), 5 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:48,592 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 492.0) internal successors, (2460), 5 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:04:48,592 INFO L175 Difference]: Start difference. First operand has 153 places, 389 transitions, 3021 flow. Second operand 4 states and 948 transitions. [2023-08-26 21:04:48,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 236 transitions, 2210 flow [2023-08-26 21:05:23,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 236 transitions, 1978 flow, removed 113 selfloop flow, removed 12 redundant places. [2023-08-26 21:05:23,372 INFO L231 Difference]: Finished difference. Result has 126 places, 231 transitions, 1512 flow [2023-08-26 21:05:23,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=492, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1512, PETRI_PLACES=126, PETRI_TRANSITIONS=231} [2023-08-26 21:05:23,373 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 20 predicate places. [2023-08-26 21:05:23,373 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 231 transitions, 1512 flow [2023-08-26 21:05:23,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:05:23,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:05:23,373 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:05:23,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 21:05:23,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-08-26 21:05:23,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:05:23,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1308554435, now seen corresponding path program 1 times [2023-08-26 21:05:23,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:05:23,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678008315] [2023-08-26 21:05:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:05:23,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:05:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:05:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 21:05:23,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:05:23,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678008315] [2023-08-26 21:05:23,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678008315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:05:23,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:05:23,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:05:23,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263723018] [2023-08-26 21:05:23,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:05:23,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:05:23,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:05:23,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:05:23,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:05:23,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 492 [2023-08-26 21:05:23,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 231 transitions, 1512 flow. Second operand has 5 states, 5 states have (on average 181.8) internal successors, (909), 5 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:05:23,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:05:23,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 492 [2023-08-26 21:05:23,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:05:33,381 INFO L124 PetriNetUnfolderBase]: 86439/122438 cut-off events. [2023-08-26 21:05:33,381 INFO L125 PetriNetUnfolderBase]: For 869120/872542 co-relation queries the response was YES. [2023-08-26 21:05:34,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580212 conditions, 122438 events. 86439/122438 cut-off events. For 869120/872542 co-relation queries the response was YES. Maximal size of possible extension queue 3385. Compared 907566 event pairs, 39660 based on Foata normal form. 1261/106440 useless extension candidates. Maximal degree in co-relation 544058. Up to 113434 conditions per place. [2023-08-26 21:05:35,050 INFO L140 encePairwiseOnDemand]: 480/492 looper letters, 300 selfloop transitions, 19 changer transitions 0/336 dead transitions. [2023-08-26 21:05:35,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 336 transitions, 2898 flow [2023-08-26 21:05:35,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:05:35,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:05:35,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1232 transitions. [2023-08-26 21:05:35,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2023-08-26 21:05:35,053 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1232 transitions. [2023-08-26 21:05:35,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1232 transitions. [2023-08-26 21:05:35,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:05:35,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1232 transitions. [2023-08-26 21:05:35,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.33333333333334) internal successors, (1232), 6 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:05:35,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 492.0) internal successors, (3444), 7 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:05:35,059 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 492.0) internal successors, (3444), 7 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:05:35,059 INFO L175 Difference]: Start difference. First operand has 126 places, 231 transitions, 1512 flow. Second operand 6 states and 1232 transitions. [2023-08-26 21:05:35,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 336 transitions, 2898 flow [2023-08-26 21:05:38,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 336 transitions, 2891 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:05:38,169 INFO L231 Difference]: Finished difference. Result has 132 places, 244 transitions, 1732 flow [2023-08-26 21:05:38,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=492, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1732, PETRI_PLACES=132, PETRI_TRANSITIONS=244} [2023-08-26 21:05:38,170 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 26 predicate places. [2023-08-26 21:05:38,170 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 244 transitions, 1732 flow [2023-08-26 21:05:38,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.8) internal successors, (909), 5 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:05:38,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:05:38,170 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 21:05:38,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 21:05:38,170 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-08-26 21:05:38,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:05:38,171 INFO L85 PathProgramCache]: Analyzing trace with hash -665115709, now seen corresponding path program 1 times [2023-08-26 21:05:38,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:05:38,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214423234] [2023-08-26 21:05:38,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:05:38,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:05:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:05:38,179 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 21:05:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 21:05:38,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 21:05:38,185 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 21:05:38,185 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (44 of 45 remaining) [2023-08-26 21:05:38,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 45 remaining) [2023-08-26 21:05:38,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 45 remaining) [2023-08-26 21:05:38,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 45 remaining) [2023-08-26 21:05:38,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 45 remaining) [2023-08-26 21:05:38,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 45 remaining) [2023-08-26 21:05:38,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 45 remaining) [2023-08-26 21:05:38,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 45 remaining) [2023-08-26 21:05:38,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 45 remaining) [2023-08-26 21:05:38,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 45 remaining) [2023-08-26 21:05:38,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 45 remaining) [2023-08-26 21:05:38,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (33 of 45 remaining) [2023-08-26 21:05:38,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 45 remaining) [2023-08-26 21:05:38,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 45 remaining) [2023-08-26 21:05:38,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 45 remaining) [2023-08-26 21:05:38,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 45 remaining) [2023-08-26 21:05:38,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 45 remaining) [2023-08-26 21:05:38,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 45 remaining) [2023-08-26 21:05:38,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 45 remaining) [2023-08-26 21:05:38,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 45 remaining) [2023-08-26 21:05:38,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 45 remaining) [2023-08-26 21:05:38,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 45 remaining) [2023-08-26 21:05:38,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (22 of 45 remaining) [2023-08-26 21:05:38,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 45 remaining) [2023-08-26 21:05:38,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 45 remaining) [2023-08-26 21:05:38,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 45 remaining) [2023-08-26 21:05:38,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 45 remaining) [2023-08-26 21:05:38,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 45 remaining) [2023-08-26 21:05:38,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 45 remaining) [2023-08-26 21:05:38,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 45 remaining) [2023-08-26 21:05:38,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 45 remaining) [2023-08-26 21:05:38,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 45 remaining) [2023-08-26 21:05:38,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 45 remaining) [2023-08-26 21:05:38,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (11 of 45 remaining) [2023-08-26 21:05:38,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 45 remaining) [2023-08-26 21:05:38,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 45 remaining) [2023-08-26 21:05:38,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 45 remaining) [2023-08-26 21:05:38,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 45 remaining) [2023-08-26 21:05:38,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 45 remaining) [2023-08-26 21:05:38,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 45 remaining) [2023-08-26 21:05:38,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 45 remaining) [2023-08-26 21:05:38,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 45 remaining) [2023-08-26 21:05:38,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 45 remaining) [2023-08-26 21:05:38,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 45 remaining) [2023-08-26 21:05:38,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONASSERT (0 of 45 remaining) [2023-08-26 21:05:38,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 21:05:38,189 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-26 21:05:38,190 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 21:05:38,190 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 21:05:38,228 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:05:38,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 352 transitions, 736 flow [2023-08-26 21:05:38,271 INFO L124 PetriNetUnfolderBase]: 41/398 cut-off events. [2023-08-26 21:05:38,271 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-26 21:05:38,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 398 events. 41/398 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1573 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 332. Up to 10 conditions per place. [2023-08-26 21:05:38,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 352 transitions, 736 flow [2023-08-26 21:05:38,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 352 transitions, 736 flow [2023-08-26 21:05:38,278 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:05:38,278 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 352 transitions, 736 flow [2023-08-26 21:05:38,279 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 352 transitions, 736 flow [2023-08-26 21:05:38,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 352 transitions, 736 flow [2023-08-26 21:05:38,319 INFO L124 PetriNetUnfolderBase]: 41/398 cut-off events. [2023-08-26 21:05:38,320 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-26 21:05:38,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 398 events. 41/398 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1573 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 332. Up to 10 conditions per place. [2023-08-26 21:05:38,336 INFO L119 LiptonReduction]: Number of co-enabled transitions 86080 [2023-08-26 21:05:42,098 INFO L134 LiptonReduction]: Checked pairs total: 202996 [2023-08-26 21:05:42,098 INFO L136 LiptonReduction]: Total number of compositions: 288 [2023-08-26 21:05:42,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:05:42,100 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;@4b2aa4a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:05:42,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2023-08-26 21:05:42,101 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:05:42,101 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-26 21:05:42,101 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 21:05:42,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:05:42,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:05:42,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-08-26 21:05:42,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:05:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash 193383165, now seen corresponding path program 1 times [2023-08-26 21:05:42,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:05:42,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605687295] [2023-08-26 21:05:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:05:42,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:05:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:05:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:05:42,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:05:42,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605687295] [2023-08-26 21:05:42,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605687295] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:05:42,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:05:42,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:05:42,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774453369] [2023-08-26 21:05:42,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:05:42,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:05:42,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:05:42,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:05:42,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:05:42,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 640 [2023-08-26 21:05:42,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 148 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:05:42,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:05:42,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 640 [2023-08-26 21:05:42,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand