/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 00:48:39,190 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 00:48:39,261 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 00:48:39,267 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 00:48:39,268 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 00:48:39,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 00:48:39,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 00:48:39,305 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 00:48:39,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 00:48:39,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 00:48:39,309 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 00:48:39,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 00:48:39,309 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 00:48:39,310 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 00:48:39,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 00:48:39,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 00:48:39,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 00:48:39,311 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 00:48:39,311 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 00:48:39,311 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 00:48:39,312 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 00:48:39,312 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 00:48:39,312 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 00:48:39,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 00:48:39,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 00:48:39,313 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 00:48:39,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 00:48:39,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:48:39,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 00:48:39,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 00:48:39,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 00:48:39,315 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 00:48:39,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 00:48:39,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 00:48:39,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 00:48:39,316 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 00:48:39,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 00:48:39,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 00:48:39,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 00:48:39,631 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 00:48:39,631 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 00:48:39,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-08-27 00:48:40,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 00:48:41,062 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 00:48:41,062 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-08-27 00:48:41,078 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dfdcee8e/9543d351a3484a2c881ed604b1a389cd/FLAG5dfaf6706 [2023-08-27 00:48:41,096 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dfdcee8e/9543d351a3484a2c881ed604b1a389cd [2023-08-27 00:48:41,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 00:48:41,103 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 00:48:41,106 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 00:48:41,106 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 00:48:41,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 00:48:41,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:48:41" (1/1) ... [2023-08-27 00:48:41,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@141ebd52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:41, skipping insertion in model container [2023-08-27 00:48:41,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:48:41" (1/1) ... [2023-08-27 00:48:41,147 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 00:48:41,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:48:41,370 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 00:48:41,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:48:41,431 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:48:41,432 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:48:41,437 INFO L206 MainTranslator]: Completed translation [2023-08-27 00:48:41,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:41 WrapperNode [2023-08-27 00:48:41,438 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 00:48:41,439 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 00:48:41,439 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 00:48:41,439 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 00:48:41,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:41" (1/1) ... [2023-08-27 00:48:41,452 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:41" (1/1) ... [2023-08-27 00:48:41,488 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 512 [2023-08-27 00:48:41,488 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 00:48:41,489 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 00:48:41,489 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 00:48:41,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 00:48:41,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:41" (1/1) ... [2023-08-27 00:48:41,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:41" (1/1) ... [2023-08-27 00:48:41,502 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:41" (1/1) ... [2023-08-27 00:48:41,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:41" (1/1) ... [2023-08-27 00:48:41,515 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:41" (1/1) ... [2023-08-27 00:48:41,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:41" (1/1) ... [2023-08-27 00:48:41,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:41" (1/1) ... [2023-08-27 00:48:41,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:41" (1/1) ... [2023-08-27 00:48:41,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 00:48:41,530 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 00:48:41,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 00:48:41,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:48:41,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:41" (1/1) ... [2023-08-27 00:48:41,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:48:41,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:48:41,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 00:48:41,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 00:48:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:48:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:48:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:48:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:48:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:48:41,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:48:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:48:41,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:48:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 00:48:41,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 00:48:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 00:48:41,594 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 00:48:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:48:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 00:48:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 00:48:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 00:48:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:48:41,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:48:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:48:41,596 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 00:48:41,712 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:48:41,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:48:42,451 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:48:42,706 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:48:42,706 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-27 00:48:42,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:48:42 BoogieIcfgContainer [2023-08-27 00:48:42,709 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:48:42,711 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:48:42,711 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:48:42,714 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:48:42,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:48:41" (1/3) ... [2023-08-27 00:48:42,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5579fdf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:48:42, skipping insertion in model container [2023-08-27 00:48:42,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:41" (2/3) ... [2023-08-27 00:48:42,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5579fdf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:48:42, skipping insertion in model container [2023-08-27 00:48:42,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:48:42" (3/3) ... [2023-08-27 00:48:42,717 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2023-08-27 00:48:42,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:48:42,754 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2023-08-27 00:48:42,754 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:48:42,892 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 00:48:42,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 366 transitions, 764 flow [2023-08-27 00:48:43,095 INFO L124 PetriNetUnfolderBase]: 25/362 cut-off events. [2023-08-27 00:48:43,095 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 00:48:43,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 362 events. 25/362 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 342 event pairs, 0 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 318. Up to 2 conditions per place. [2023-08-27 00:48:43,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 354 places, 366 transitions, 764 flow [2023-08-27 00:48:43,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 337 places, 349 transitions, 722 flow [2023-08-27 00:48:43,115 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:48:43,126 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 337 places, 349 transitions, 722 flow [2023-08-27 00:48:43,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 337 places, 349 transitions, 722 flow [2023-08-27 00:48:43,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 349 transitions, 722 flow [2023-08-27 00:48:43,201 INFO L124 PetriNetUnfolderBase]: 25/349 cut-off events. [2023-08-27 00:48:43,202 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 00:48:43,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 349 events. 25/349 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 340 event pairs, 0 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 318. Up to 2 conditions per place. [2023-08-27 00:48:43,208 INFO L119 LiptonReduction]: Number of co-enabled transitions 5712 [2023-08-27 00:48:55,892 INFO L134 LiptonReduction]: Checked pairs total: 21443 [2023-08-27 00:48:55,893 INFO L136 LiptonReduction]: Total number of compositions: 355 [2023-08-27 00:48:55,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:48:55,910 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;@7beb7057, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:48:55,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-08-27 00:48:55,913 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:48:55,913 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 00:48:55,914 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 00:48:55,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:48:55,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 00:48:55,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:48:55,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:48:55,919 INFO L85 PathProgramCache]: Analyzing trace with hash 59640, now seen corresponding path program 1 times [2023-08-27 00:48:55,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:48:55,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72293004] [2023-08-27 00:48:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:48:55,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:48:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:48:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:48:56,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:48:56,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72293004] [2023-08-27 00:48:56,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72293004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:48:56,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:48:56,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:48:56,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748292904] [2023-08-27 00:48:56,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:48:56,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:48:56,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:48:56,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:48:56,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:48:56,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 721 [2023-08-27 00:48:56,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:48:56,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:48:56,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 721 [2023-08-27 00:48:56,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:48:58,774 INFO L124 PetriNetUnfolderBase]: 14480/18865 cut-off events. [2023-08-27 00:48:58,775 INFO L125 PetriNetUnfolderBase]: For 513/513 co-relation queries the response was YES. [2023-08-27 00:48:58,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38700 conditions, 18865 events. 14480/18865 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 86034 event pairs, 11752 based on Foata normal form. 0/9441 useless extension candidates. Maximal degree in co-relation 36140. Up to 18859 conditions per place. [2023-08-27 00:48:58,910 INFO L140 encePairwiseOnDemand]: 692/721 looper letters, 60 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2023-08-27 00:48:58,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 69 transitions, 300 flow [2023-08-27 00:48:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:48:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:48:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 905 transitions. [2023-08-27 00:48:58,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41840036985668055 [2023-08-27 00:48:58,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 905 transitions. [2023-08-27 00:48:58,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 905 transitions. [2023-08-27 00:48:58,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:48:58,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 905 transitions. [2023-08-27 00:48:58,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:48:58,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:48:58,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:48:58,947 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 170 flow. Second operand 3 states and 905 transitions. [2023-08-27 00:48:58,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 69 transitions, 300 flow [2023-08-27 00:48:59,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 69 transitions, 284 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 00:48:59,004 INFO L231 Difference]: Finished difference. Result has 62 places, 69 transitions, 214 flow [2023-08-27 00:48:59,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=62, PETRI_TRANSITIONS=69} [2023-08-27 00:48:59,008 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -16 predicate places. [2023-08-27 00:48:59,009 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 69 transitions, 214 flow [2023-08-27 00:48:59,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:48:59,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:48:59,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 00:48:59,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:48:59,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:48:59,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:48:59,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1851468, now seen corresponding path program 1 times [2023-08-27 00:48:59,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:48:59,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100410741] [2023-08-27 00:48:59,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:48:59,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:48:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:48:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:48:59,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:48:59,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100410741] [2023-08-27 00:48:59,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100410741] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:48:59,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713059152] [2023-08-27 00:48:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:48:59,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:48:59,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:48:59,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:48:59,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 00:48:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:48:59,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:48:59,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:48:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:48:59,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:48:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:48:59,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713059152] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:48:59,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:48:59,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 00:48:59,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237637029] [2023-08-27 00:48:59,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:48:59,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:48:59,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:48:59,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:48:59,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:48:59,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 721 [2023-08-27 00:48:59,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 69 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 273.14285714285717) internal successors, (1912), 7 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:48:59,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:48:59,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 721 [2023-08-27 00:48:59,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:01,407 INFO L124 PetriNetUnfolderBase]: 14504/18901 cut-off events. [2023-08-27 00:49:01,408 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-27 00:49:01,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38289 conditions, 18901 events. 14504/18901 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 86173 event pairs, 11752 based on Foata normal form. 0/9468 useless extension candidates. Maximal degree in co-relation 38084. Up to 18858 conditions per place. [2023-08-27 00:49:01,500 INFO L140 encePairwiseOnDemand]: 704/721 looper letters, 56 selfloop transitions, 49 changer transitions 0/105 dead transitions. [2023-08-27 00:49:01,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 105 transitions, 586 flow [2023-08-27 00:49:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:49:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:49:01,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2021 transitions. [2023-08-27 00:49:01,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40043590251634636 [2023-08-27 00:49:01,509 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2021 transitions. [2023-08-27 00:49:01,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2021 transitions. [2023-08-27 00:49:01,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:01,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2021 transitions. [2023-08-27 00:49:01,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.7142857142857) internal successors, (2021), 7 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:01,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 721.0) internal successors, (5768), 8 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:01,529 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 721.0) internal successors, (5768), 8 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:01,529 INFO L175 Difference]: Start difference. First operand has 62 places, 69 transitions, 214 flow. Second operand 7 states and 2021 transitions. [2023-08-27 00:49:01,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 105 transitions, 586 flow [2023-08-27 00:49:01,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 105 transitions, 550 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:49:01,534 INFO L231 Difference]: Finished difference. Result has 69 places, 105 transitions, 520 flow [2023-08-27 00:49:01,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=520, PETRI_PLACES=69, PETRI_TRANSITIONS=105} [2023-08-27 00:49:01,536 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2023-08-27 00:49:01,536 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 105 transitions, 520 flow [2023-08-27 00:49:01,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.14285714285717) internal successors, (1912), 7 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:01,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:01,537 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 00:49:01,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 00:49:01,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:01,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:01,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:01,746 INFO L85 PathProgramCache]: Analyzing trace with hash 57397240, now seen corresponding path program 1 times [2023-08-27 00:49:01,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:01,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451796328] [2023-08-27 00:49:01,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:01,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:49:01,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:01,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451796328] [2023-08-27 00:49:01,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451796328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:01,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:49:01,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:49:01,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698982526] [2023-08-27 00:49:01,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:01,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:49:01,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:01,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:49:01,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:49:01,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 721 [2023-08-27 00:49:01,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 105 transitions, 520 flow. Second operand has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:01,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:01,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 721 [2023-08-27 00:49:01,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:03,648 INFO L124 PetriNetUnfolderBase]: 14492/18885 cut-off events. [2023-08-27 00:49:03,648 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-08-27 00:49:03,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38300 conditions, 18885 events. 14492/18885 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 86152 event pairs, 11752 based on Foata normal form. 0/9469 useless extension candidates. Maximal degree in co-relation 38177. Up to 18846 conditions per place. [2023-08-27 00:49:03,751 INFO L140 encePairwiseOnDemand]: 715/721 looper letters, 83 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2023-08-27 00:49:03,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 89 transitions, 590 flow [2023-08-27 00:49:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:49:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:49:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2023-08-27 00:49:03,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054553860379103 [2023-08-27 00:49:03,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2023-08-27 00:49:03,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2023-08-27 00:49:03,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:03,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2023-08-27 00:49:03,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:03,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:03,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:03,763 INFO L175 Difference]: Start difference. First operand has 69 places, 105 transitions, 520 flow. Second operand 3 states and 877 transitions. [2023-08-27 00:49:03,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 89 transitions, 590 flow [2023-08-27 00:49:03,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 542 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-27 00:49:03,767 INFO L231 Difference]: Finished difference. Result has 65 places, 89 transitions, 376 flow [2023-08-27 00:49:03,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=376, PETRI_PLACES=65, PETRI_TRANSITIONS=89} [2023-08-27 00:49:03,767 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -13 predicate places. [2023-08-27 00:49:03,768 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 89 transitions, 376 flow [2023-08-27 00:49:03,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:03,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:03,769 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 00:49:03,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 00:49:03,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:03,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:03,769 INFO L85 PathProgramCache]: Analyzing trace with hash -675743980, now seen corresponding path program 2 times [2023-08-27 00:49:03,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:03,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415508359] [2023-08-27 00:49:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:03,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:03,914 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:49:03,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:03,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415508359] [2023-08-27 00:49:03,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415508359] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:03,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916631547] [2023-08-27 00:49:03,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:49:03,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:03,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:03,917 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:49:03,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 00:49:04,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:49:04,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:49:04,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 00:49:04,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 00:49:04,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:49:04,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916631547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:04,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:49:04,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 00:49:04,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787195333] [2023-08-27 00:49:04,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:04,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:49:04,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:04,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:49:04,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:49:04,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 721 [2023-08-27 00:49:04,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 89 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:04,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:04,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 721 [2023-08-27 00:49:04,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:05,707 INFO L124 PetriNetUnfolderBase]: 14492/18881 cut-off events. [2023-08-27 00:49:05,707 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-27 00:49:05,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38255 conditions, 18881 events. 14492/18881 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 86092 event pairs, 11752 based on Foata normal form. 4/9474 useless extension candidates. Maximal degree in co-relation 38168. Up to 18881 conditions per place. [2023-08-27 00:49:05,794 INFO L140 encePairwiseOnDemand]: 716/721 looper letters, 84 selfloop transitions, 1 changer transitions 0/85 dead transitions. [2023-08-27 00:49:05,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 506 flow [2023-08-27 00:49:05,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:49:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:49:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 885 transitions. [2023-08-27 00:49:05,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4091539528432732 [2023-08-27 00:49:05,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 885 transitions. [2023-08-27 00:49:05,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 885 transitions. [2023-08-27 00:49:05,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:05,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 885 transitions. [2023-08-27 00:49:05,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:05,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:05,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:05,805 INFO L175 Difference]: Start difference. First operand has 65 places, 89 transitions, 376 flow. Second operand 3 states and 885 transitions. [2023-08-27 00:49:05,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 506 flow [2023-08-27 00:49:05,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 85 transitions, 430 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-27 00:49:05,807 INFO L231 Difference]: Finished difference. Result has 57 places, 85 transitions, 262 flow [2023-08-27 00:49:05,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=57, PETRI_TRANSITIONS=85} [2023-08-27 00:49:05,808 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -21 predicate places. [2023-08-27 00:49:05,808 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 85 transitions, 262 flow [2023-08-27 00:49:05,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:05,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:05,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:05,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 00:49:06,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-27 00:49:06,015 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:06,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:06,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1915386150, now seen corresponding path program 1 times [2023-08-27 00:49:06,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:06,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423423526] [2023-08-27 00:49:06,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:06,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:49:06,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:06,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423423526] [2023-08-27 00:49:06,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423423526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:06,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:49:06,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:49:06,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365749490] [2023-08-27 00:49:06,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:06,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:49:06,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:06,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:49:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:49:06,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 721 [2023-08-27 00:49:06,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 85 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:06,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:06,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 721 [2023-08-27 00:49:06,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:07,781 INFO L124 PetriNetUnfolderBase]: 16164/21139 cut-off events. [2023-08-27 00:49:07,781 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-08-27 00:49:07,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42777 conditions, 21139 events. 16164/21139 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 102158 event pairs, 3529 based on Foata normal form. 0/10711 useless extension candidates. Maximal degree in co-relation 42769. Up to 19180 conditions per place. [2023-08-27 00:49:07,876 INFO L140 encePairwiseOnDemand]: 715/721 looper letters, 108 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2023-08-27 00:49:07,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 112 transitions, 546 flow [2023-08-27 00:49:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:49:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:49:07,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 982 transitions. [2023-08-27 00:49:07,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45399907535829864 [2023-08-27 00:49:07,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 982 transitions. [2023-08-27 00:49:07,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 982 transitions. [2023-08-27 00:49:07,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:07,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 982 transitions. [2023-08-27 00:49:07,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:07,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:07,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:07,888 INFO L175 Difference]: Start difference. First operand has 57 places, 85 transitions, 262 flow. Second operand 3 states and 982 transitions. [2023-08-27 00:49:07,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 112 transitions, 546 flow [2023-08-27 00:49:07,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 112 transitions, 545 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:49:07,892 INFO L231 Difference]: Finished difference. Result has 59 places, 88 transitions, 289 flow [2023-08-27 00:49:07,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=59, PETRI_TRANSITIONS=88} [2023-08-27 00:49:07,894 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -19 predicate places. [2023-08-27 00:49:07,894 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 88 transitions, 289 flow [2023-08-27 00:49:07,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:07,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:07,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:07,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 00:49:07,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:07,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:07,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1854847800, now seen corresponding path program 1 times [2023-08-27 00:49:07,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:07,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925711458] [2023-08-27 00:49:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:07,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:49:08,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:08,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925711458] [2023-08-27 00:49:08,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925711458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:08,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:49:08,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:49:08,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748722240] [2023-08-27 00:49:08,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:08,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:49:08,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:08,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:49:08,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:49:08,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 721 [2023-08-27 00:49:08,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 88 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 303.0) internal successors, (909), 3 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) [2023-08-27 00:49:08,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:08,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 721 [2023-08-27 00:49:08,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:09,951 INFO L124 PetriNetUnfolderBase]: 16922/22187 cut-off events. [2023-08-27 00:49:09,952 INFO L125 PetriNetUnfolderBase]: For 2376/2376 co-relation queries the response was YES. [2023-08-27 00:49:10,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48572 conditions, 22187 events. 16922/22187 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 102373 event pairs, 4493 based on Foata normal form. 0/14627 useless extension candidates. Maximal degree in co-relation 48562. Up to 18518 conditions per place. [2023-08-27 00:49:10,092 INFO L140 encePairwiseOnDemand]: 717/721 looper letters, 112 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-27 00:49:10,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 114 transitions, 579 flow [2023-08-27 00:49:10,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:49:10,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:49:10,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 982 transitions. [2023-08-27 00:49:10,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45399907535829864 [2023-08-27 00:49:10,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 982 transitions. [2023-08-27 00:49:10,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 982 transitions. [2023-08-27 00:49:10,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:10,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 982 transitions. [2023-08-27 00:49:10,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:10,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:10,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:10,102 INFO L175 Difference]: Start difference. First operand has 59 places, 88 transitions, 289 flow. Second operand 3 states and 982 transitions. [2023-08-27 00:49:10,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 114 transitions, 579 flow [2023-08-27 00:49:10,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 114 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:49:10,105 INFO L231 Difference]: Finished difference. Result has 61 places, 88 transitions, 295 flow [2023-08-27 00:49:10,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=61, PETRI_TRANSITIONS=88} [2023-08-27 00:49:10,106 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -17 predicate places. [2023-08-27 00:49:10,106 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 88 transitions, 295 flow [2023-08-27 00:49:10,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 303.0) internal successors, (909), 3 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) [2023-08-27 00:49:10,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:10,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:10,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 00:49:10,107 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:10,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:10,107 INFO L85 PathProgramCache]: Analyzing trace with hash -97204695, now seen corresponding path program 1 times [2023-08-27 00:49:10,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:10,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193225544] [2023-08-27 00:49:10,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:10,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:49:10,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:10,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193225544] [2023-08-27 00:49:10,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193225544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:10,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:49:10,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:49:10,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484305138] [2023-08-27 00:49:10,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:10,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:49:10,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:10,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:49:10,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:49:10,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 721 [2023-08-27 00:49:10,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 88 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:10,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:10,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 721 [2023-08-27 00:49:10,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:11,845 INFO L124 PetriNetUnfolderBase]: 13678/17853 cut-off events. [2023-08-27 00:49:11,845 INFO L125 PetriNetUnfolderBase]: For 2478/2478 co-relation queries the response was YES. [2023-08-27 00:49:11,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40447 conditions, 17853 events. 13678/17853 cut-off events. For 2478/2478 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 79563 event pairs, 3169 based on Foata normal form. 0/12641 useless extension candidates. Maximal degree in co-relation 40435. Up to 15898 conditions per place. [2023-08-27 00:49:11,905 INFO L140 encePairwiseOnDemand]: 717/721 looper letters, 111 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2023-08-27 00:49:11,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 113 transitions, 585 flow [2023-08-27 00:49:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:49:11,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:49:11,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 973 transitions. [2023-08-27 00:49:11,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44983818770226536 [2023-08-27 00:49:11,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 973 transitions. [2023-08-27 00:49:11,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 973 transitions. [2023-08-27 00:49:11,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:11,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 973 transitions. [2023-08-27 00:49:11,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:11,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:11,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:11,915 INFO L175 Difference]: Start difference. First operand has 61 places, 88 transitions, 295 flow. Second operand 3 states and 973 transitions. [2023-08-27 00:49:11,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 113 transitions, 585 flow [2023-08-27 00:49:11,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:49:11,918 INFO L231 Difference]: Finished difference. Result has 63 places, 88 transitions, 303 flow [2023-08-27 00:49:11,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=88} [2023-08-27 00:49:11,918 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -15 predicate places. [2023-08-27 00:49:11,918 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 88 transitions, 303 flow [2023-08-27 00:49:11,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:11,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:11,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:11,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 00:49:11,919 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:11,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:11,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1075572950, now seen corresponding path program 1 times [2023-08-27 00:49:11,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:11,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339296510] [2023-08-27 00:49:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:11,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:49:12,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:12,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339296510] [2023-08-27 00:49:12,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339296510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:12,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:49:12,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:49:12,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359183199] [2023-08-27 00:49:12,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:12,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:49:12,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:12,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:49:12,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:49:12,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 721 [2023-08-27 00:49:12,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 88 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 256.25) internal successors, (1025), 4 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:12,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:12,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 721 [2023-08-27 00:49:12,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:13,496 INFO L124 PetriNetUnfolderBase]: 13809/18090 cut-off events. [2023-08-27 00:49:13,496 INFO L125 PetriNetUnfolderBase]: For 3260/3260 co-relation queries the response was YES. [2023-08-27 00:49:13,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42798 conditions, 18090 events. 13809/18090 cut-off events. For 3260/3260 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 84182 event pairs, 11269 based on Foata normal form. 30/13953 useless extension candidates. Maximal degree in co-relation 42784. Up to 17852 conditions per place. [2023-08-27 00:49:13,567 INFO L140 encePairwiseOnDemand]: 710/721 looper letters, 123 selfloop transitions, 15 changer transitions 0/138 dead transitions. [2023-08-27 00:49:13,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 138 transitions, 747 flow [2023-08-27 00:49:13,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:49:13,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:49:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1354 transitions. [2023-08-27 00:49:13,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755894590846047 [2023-08-27 00:49:13,570 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1354 transitions. [2023-08-27 00:49:13,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1354 transitions. [2023-08-27 00:49:13,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:13,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1354 transitions. [2023-08-27 00:49:13,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 270.8) internal successors, (1354), 5 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:13,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 721.0) internal successors, (4326), 6 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:13,578 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 721.0) internal successors, (4326), 6 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:13,578 INFO L175 Difference]: Start difference. First operand has 63 places, 88 transitions, 303 flow. Second operand 5 states and 1354 transitions. [2023-08-27 00:49:13,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 138 transitions, 747 flow [2023-08-27 00:49:13,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 138 transitions, 745 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:49:13,583 INFO L231 Difference]: Finished difference. Result has 68 places, 100 transitions, 432 flow [2023-08-27 00:49:13,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=432, PETRI_PLACES=68, PETRI_TRANSITIONS=100} [2023-08-27 00:49:13,584 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -10 predicate places. [2023-08-27 00:49:13,584 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 100 transitions, 432 flow [2023-08-27 00:49:13,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 256.25) internal successors, (1025), 4 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:13,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:13,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:13,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 00:49:13,585 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:13,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:13,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1087347042, now seen corresponding path program 1 times [2023-08-27 00:49:13,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:13,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939202710] [2023-08-27 00:49:13,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:13,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:49:13,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:13,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939202710] [2023-08-27 00:49:13,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939202710] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:13,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191771147] [2023-08-27 00:49:13,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:13,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:13,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:13,728 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:49:13,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 00:49:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:13,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:49:13,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:49:13,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:49:13,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191771147] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:13,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:49:13,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 00:49:13,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87834355] [2023-08-27 00:49:13,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:13,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:49:13,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:13,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:49:13,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:49:13,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 721 [2023-08-27 00:49:13,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 100 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:13,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:13,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 721 [2023-08-27 00:49:13,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:14,578 INFO L124 PetriNetUnfolderBase]: 6034/8015 cut-off events. [2023-08-27 00:49:14,578 INFO L125 PetriNetUnfolderBase]: For 2224/2224 co-relation queries the response was YES. [2023-08-27 00:49:14,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19427 conditions, 8015 events. 6034/8015 cut-off events. For 2224/2224 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 33181 event pairs, 4688 based on Foata normal form. 1214/7903 useless extension candidates. Maximal degree in co-relation 19410. Up to 8015 conditions per place. [2023-08-27 00:49:14,610 INFO L140 encePairwiseOnDemand]: 714/721 looper letters, 93 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-27 00:49:14,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 94 transitions, 604 flow [2023-08-27 00:49:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:49:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:49:14,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 956 transitions. [2023-08-27 00:49:14,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44197873324086917 [2023-08-27 00:49:14,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 956 transitions. [2023-08-27 00:49:14,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 956 transitions. [2023-08-27 00:49:14,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:14,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 956 transitions. [2023-08-27 00:49:14,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:14,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:14,618 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:14,618 INFO L175 Difference]: Start difference. First operand has 68 places, 100 transitions, 432 flow. Second operand 3 states and 956 transitions. [2023-08-27 00:49:14,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 94 transitions, 604 flow [2023-08-27 00:49:14,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 94 transitions, 598 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 00:49:14,622 INFO L231 Difference]: Finished difference. Result has 63 places, 94 transitions, 412 flow [2023-08-27 00:49:14,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=63, PETRI_TRANSITIONS=94} [2023-08-27 00:49:14,623 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -15 predicate places. [2023-08-27 00:49:14,623 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 94 transitions, 412 flow [2023-08-27 00:49:14,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:14,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:14,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:14,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 00:49:14,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:14,833 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:14,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:14,834 INFO L85 PathProgramCache]: Analyzing trace with hash 651981475, now seen corresponding path program 1 times [2023-08-27 00:49:14,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:14,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313728734] [2023-08-27 00:49:14,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:14,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:49:15,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:15,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313728734] [2023-08-27 00:49:15,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313728734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:15,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:49:15,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:49:15,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505575834] [2023-08-27 00:49:15,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:15,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:49:15,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:15,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:49:15,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:49:15,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 721 [2023-08-27 00:49:15,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 94 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:15,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:15,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 721 [2023-08-27 00:49:15,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:15,619 INFO L124 PetriNetUnfolderBase]: 5676/7549 cut-off events. [2023-08-27 00:49:15,619 INFO L125 PetriNetUnfolderBase]: For 1957/1957 co-relation queries the response was YES. [2023-08-27 00:49:15,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18439 conditions, 7549 events. 5676/7549 cut-off events. For 1957/1957 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 29626 event pairs, 1592 based on Foata normal form. 206/6435 useless extension candidates. Maximal degree in co-relation 18421. Up to 6419 conditions per place. [2023-08-27 00:49:15,644 INFO L140 encePairwiseOnDemand]: 717/721 looper letters, 118 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2023-08-27 00:49:15,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 120 transitions, 722 flow [2023-08-27 00:49:15,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:49:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:49:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 978 transitions. [2023-08-27 00:49:15,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521497919556172 [2023-08-27 00:49:15,646 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 978 transitions. [2023-08-27 00:49:15,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 978 transitions. [2023-08-27 00:49:15,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:15,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 978 transitions. [2023-08-27 00:49:15,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:15,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:15,651 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:15,651 INFO L175 Difference]: Start difference. First operand has 63 places, 94 transitions, 412 flow. Second operand 3 states and 978 transitions. [2023-08-27 00:49:15,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 120 transitions, 722 flow [2023-08-27 00:49:15,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 120 transitions, 721 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:49:15,655 INFO L231 Difference]: Finished difference. Result has 65 places, 95 transitions, 425 flow [2023-08-27 00:49:15,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=425, PETRI_PLACES=65, PETRI_TRANSITIONS=95} [2023-08-27 00:49:15,655 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -13 predicate places. [2023-08-27 00:49:15,656 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 95 transitions, 425 flow [2023-08-27 00:49:15,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:15,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:15,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:15,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 00:49:15,656 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:15,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:15,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1263399790, now seen corresponding path program 1 times [2023-08-27 00:49:15,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:15,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632918254] [2023-08-27 00:49:15,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:15,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:49:15,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:15,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632918254] [2023-08-27 00:49:15,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632918254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:15,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:49:15,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:49:15,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267621257] [2023-08-27 00:49:15,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:15,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:49:15,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:15,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:49:15,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:49:15,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 721 [2023-08-27 00:49:15,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 95 transitions, 425 flow. Second operand has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:15,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:15,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 721 [2023-08-27 00:49:15,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:16,610 INFO L124 PetriNetUnfolderBase]: 5986/8089 cut-off events. [2023-08-27 00:49:16,610 INFO L125 PetriNetUnfolderBase]: For 2403/2403 co-relation queries the response was YES. [2023-08-27 00:49:16,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20561 conditions, 8089 events. 5986/8089 cut-off events. For 2403/2403 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 33942 event pairs, 4670 based on Foata normal form. 16/6935 useless extension candidates. Maximal degree in co-relation 20541. Up to 7517 conditions per place. [2023-08-27 00:49:16,643 INFO L140 encePairwiseOnDemand]: 710/721 looper letters, 103 selfloop transitions, 24 changer transitions 2/129 dead transitions. [2023-08-27 00:49:16,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 129 transitions, 801 flow [2023-08-27 00:49:16,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:49:16,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:49:16,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1346 transitions. [2023-08-27 00:49:16,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37337031900138695 [2023-08-27 00:49:16,647 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1346 transitions. [2023-08-27 00:49:16,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1346 transitions. [2023-08-27 00:49:16,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:16,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1346 transitions. [2023-08-27 00:49:16,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.2) internal successors, (1346), 5 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:16,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 721.0) internal successors, (4326), 6 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:16,654 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 721.0) internal successors, (4326), 6 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:16,654 INFO L175 Difference]: Start difference. First operand has 65 places, 95 transitions, 425 flow. Second operand 5 states and 1346 transitions. [2023-08-27 00:49:16,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 129 transitions, 801 flow [2023-08-27 00:49:16,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 129 transitions, 799 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:49:16,659 INFO L231 Difference]: Finished difference. Result has 70 places, 99 transitions, 544 flow [2023-08-27 00:49:16,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=544, PETRI_PLACES=70, PETRI_TRANSITIONS=99} [2023-08-27 00:49:16,660 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -8 predicate places. [2023-08-27 00:49:16,660 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 99 transitions, 544 flow [2023-08-27 00:49:16,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:16,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:16,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:16,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 00:49:16,661 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:16,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:16,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1128906927, now seen corresponding path program 1 times [2023-08-27 00:49:16,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:16,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917826040] [2023-08-27 00:49:16,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:16,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:16,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:49:16,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:16,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917826040] [2023-08-27 00:49:16,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917826040] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:16,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891971760] [2023-08-27 00:49:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:16,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:16,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:16,797 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:49:16,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 00:49:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:16,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:49:16,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:49:17,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:49:17,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891971760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:17,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:49:17,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-27 00:49:17,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360296884] [2023-08-27 00:49:17,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:17,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:49:17,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:17,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:49:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:49:17,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 721 [2023-08-27 00:49:17,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 99 transitions, 544 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:17,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:17,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 721 [2023-08-27 00:49:17,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:17,552 INFO L124 PetriNetUnfolderBase]: 4326/5933 cut-off events. [2023-08-27 00:49:17,552 INFO L125 PetriNetUnfolderBase]: For 1998/1998 co-relation queries the response was YES. [2023-08-27 00:49:17,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14986 conditions, 5933 events. 4326/5933 cut-off events. For 1998/1998 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 23779 event pairs, 3306 based on Foata normal form. 104/5495 useless extension candidates. Maximal degree in co-relation 14963. Up to 5933 conditions per place. [2023-08-27 00:49:17,576 INFO L140 encePairwiseOnDemand]: 718/721 looper letters, 96 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-08-27 00:49:17,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 97 transitions, 730 flow [2023-08-27 00:49:17,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:49:17,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:49:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 950 transitions. [2023-08-27 00:49:17,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.439204808136847 [2023-08-27 00:49:17,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 950 transitions. [2023-08-27 00:49:17,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 950 transitions. [2023-08-27 00:49:17,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:17,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 950 transitions. [2023-08-27 00:49:17,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:17,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:17,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:17,584 INFO L175 Difference]: Start difference. First operand has 70 places, 99 transitions, 544 flow. Second operand 3 states and 950 transitions. [2023-08-27 00:49:17,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 97 transitions, 730 flow [2023-08-27 00:49:17,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 719 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 00:49:17,589 INFO L231 Difference]: Finished difference. Result has 69 places, 97 transitions, 527 flow [2023-08-27 00:49:17,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=527, PETRI_PLACES=69, PETRI_TRANSITIONS=97} [2023-08-27 00:49:17,590 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2023-08-27 00:49:17,590 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 97 transitions, 527 flow [2023-08-27 00:49:17,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:17,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:17,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:17,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 00:49:17,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:17,799 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:17,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:17,800 INFO L85 PathProgramCache]: Analyzing trace with hash -636374918, now seen corresponding path program 1 times [2023-08-27 00:49:17,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:17,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114604561] [2023-08-27 00:49:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:17,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:49:17,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:17,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114604561] [2023-08-27 00:49:17,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114604561] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:17,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:49:17,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:49:17,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641697438] [2023-08-27 00:49:17,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:17,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:49:17,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:49:17,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:49:17,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 721 [2023-08-27 00:49:17,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 97 transitions, 527 flow. Second operand has 4 states, 4 states have (on average 257.5) internal successors, (1030), 4 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:17,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:17,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 721 [2023-08-27 00:49:17,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:18,519 INFO L124 PetriNetUnfolderBase]: 4946/7005 cut-off events. [2023-08-27 00:49:18,519 INFO L125 PetriNetUnfolderBase]: For 2102/2102 co-relation queries the response was YES. [2023-08-27 00:49:18,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17343 conditions, 7005 events. 4946/7005 cut-off events. For 2102/2102 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 30269 event pairs, 3926 based on Foata normal form. 24/6487 useless extension candidates. Maximal degree in co-relation 17319. Up to 5879 conditions per place. [2023-08-27 00:49:18,544 INFO L140 encePairwiseOnDemand]: 715/721 looper letters, 99 selfloop transitions, 18 changer transitions 5/122 dead transitions. [2023-08-27 00:49:18,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 122 transitions, 843 flow [2023-08-27 00:49:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:49:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:49:18,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1086 transitions. [2023-08-27 00:49:18,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3765603328710125 [2023-08-27 00:49:18,547 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1086 transitions. [2023-08-27 00:49:18,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1086 transitions. [2023-08-27 00:49:18,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:18,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1086 transitions. [2023-08-27 00:49:18,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 271.5) internal successors, (1086), 4 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:18,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 721.0) internal successors, (3605), 5 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:18,553 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 721.0) internal successors, (3605), 5 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:18,553 INFO L175 Difference]: Start difference. First operand has 69 places, 97 transitions, 527 flow. Second operand 4 states and 1086 transitions. [2023-08-27 00:49:18,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 122 transitions, 843 flow [2023-08-27 00:49:18,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 122 transitions, 842 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:49:18,558 INFO L231 Difference]: Finished difference. Result has 72 places, 97 transitions, 580 flow [2023-08-27 00:49:18,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=580, PETRI_PLACES=72, PETRI_TRANSITIONS=97} [2023-08-27 00:49:18,558 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -6 predicate places. [2023-08-27 00:49:18,559 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 97 transitions, 580 flow [2023-08-27 00:49:18,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 257.5) internal successors, (1030), 4 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:18,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:18,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:18,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 00:49:18,559 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:18,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:18,560 INFO L85 PathProgramCache]: Analyzing trace with hash -632845079, now seen corresponding path program 1 times [2023-08-27 00:49:18,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:18,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520235717] [2023-08-27 00:49:18,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:18,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:49:18,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:18,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520235717] [2023-08-27 00:49:18,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520235717] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:18,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31976595] [2023-08-27 00:49:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:18,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:18,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:18,727 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:49:18,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 00:49:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:18,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:49:18,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:18,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:49:18,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:49:18,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31976595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:18,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:49:18,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-27 00:49:18,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313722396] [2023-08-27 00:49:18,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:18,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:49:18,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:18,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:49:18,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:49:18,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 721 [2023-08-27 00:49:18,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 97 transitions, 580 flow. Second operand has 3 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:18,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:18,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 721 [2023-08-27 00:49:18,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:19,341 INFO L124 PetriNetUnfolderBase]: 3766/5469 cut-off events. [2023-08-27 00:49:19,342 INFO L125 PetriNetUnfolderBase]: For 1700/1700 co-relation queries the response was YES. [2023-08-27 00:49:19,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13419 conditions, 5469 events. 3766/5469 cut-off events. For 1700/1700 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23409 event pairs, 2990 based on Foata normal form. 84/5367 useless extension candidates. Maximal degree in co-relation 13393. Up to 5469 conditions per place. [2023-08-27 00:49:19,367 INFO L140 encePairwiseOnDemand]: 718/721 looper letters, 94 selfloop transitions, 1 changer transitions 0/95 dead transitions. [2023-08-27 00:49:19,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 95 transitions, 762 flow [2023-08-27 00:49:19,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:49:19,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:49:19,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 948 transitions. [2023-08-27 00:49:19,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43828016643550627 [2023-08-27 00:49:19,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 948 transitions. [2023-08-27 00:49:19,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 948 transitions. [2023-08-27 00:49:19,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:19,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 948 transitions. [2023-08-27 00:49:19,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.0) internal successors, (948), 3 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) [2023-08-27 00:49:19,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:19,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:19,374 INFO L175 Difference]: Start difference. First operand has 72 places, 97 transitions, 580 flow. Second operand 3 states and 948 transitions. [2023-08-27 00:49:19,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 95 transitions, 762 flow [2023-08-27 00:49:19,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 95 transitions, 701 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-27 00:49:19,379 INFO L231 Difference]: Finished difference. Result has 69 places, 95 transitions, 513 flow [2023-08-27 00:49:19,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=69, PETRI_TRANSITIONS=95} [2023-08-27 00:49:19,380 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2023-08-27 00:49:19,380 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 95 transitions, 513 flow [2023-08-27 00:49:19,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:19,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:19,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:19,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 00:49:19,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 00:49:19,589 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:19,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:19,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1820124872, now seen corresponding path program 1 times [2023-08-27 00:49:19,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:19,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553102356] [2023-08-27 00:49:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:19,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:19,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:49:19,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:19,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553102356] [2023-08-27 00:49:19,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553102356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:19,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:49:19,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:49:19,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111242444] [2023-08-27 00:49:19,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:19,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:49:19,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:19,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:49:19,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:49:19,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 721 [2023-08-27 00:49:19,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 95 transitions, 513 flow. Second operand has 4 states, 4 states have (on average 258.5) internal successors, (1034), 4 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:19,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:19,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 721 [2023-08-27 00:49:19,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:20,388 INFO L124 PetriNetUnfolderBase]: 5165/7856 cut-off events. [2023-08-27 00:49:20,388 INFO L125 PetriNetUnfolderBase]: For 2084/2084 co-relation queries the response was YES. [2023-08-27 00:49:20,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18801 conditions, 7856 events. 5165/7856 cut-off events. For 2084/2084 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 39509 event pairs, 4323 based on Foata normal form. 36/7690 useless extension candidates. Maximal degree in co-relation 18776. Up to 5457 conditions per place. [2023-08-27 00:49:20,410 INFO L140 encePairwiseOnDemand]: 715/721 looper letters, 137 selfloop transitions, 9 changer transitions 10/156 dead transitions. [2023-08-27 00:49:20,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 156 transitions, 1120 flow [2023-08-27 00:49:20,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:49:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:49:20,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1093 transitions. [2023-08-27 00:49:20,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3789875173370319 [2023-08-27 00:49:20,412 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1093 transitions. [2023-08-27 00:49:20,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1093 transitions. [2023-08-27 00:49:20,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:20,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1093 transitions. [2023-08-27 00:49:20,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 273.25) internal successors, (1093), 4 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:20,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 721.0) internal successors, (3605), 5 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:20,417 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 721.0) internal successors, (3605), 5 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:20,417 INFO L175 Difference]: Start difference. First operand has 69 places, 95 transitions, 513 flow. Second operand 4 states and 1093 transitions. [2023-08-27 00:49:20,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 156 transitions, 1120 flow [2023-08-27 00:49:20,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 156 transitions, 1119 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:49:20,422 INFO L231 Difference]: Finished difference. Result has 72 places, 95 transitions, 541 flow [2023-08-27 00:49:20,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=541, PETRI_PLACES=72, PETRI_TRANSITIONS=95} [2023-08-27 00:49:20,423 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -6 predicate places. [2023-08-27 00:49:20,423 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 95 transitions, 541 flow [2023-08-27 00:49:20,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.5) internal successors, (1034), 4 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:20,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:20,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:20,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 00:49:20,423 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:20,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:20,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1780305562, now seen corresponding path program 1 times [2023-08-27 00:49:20,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:20,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170984328] [2023-08-27 00:49:20,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:20,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:49:20,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:20,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170984328] [2023-08-27 00:49:20,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170984328] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:20,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410385079] [2023-08-27 00:49:20,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:20,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:20,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:20,641 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:49:20,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 00:49:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:20,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:49:20,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:49:20,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:49:20,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410385079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:20,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:49:20,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-27 00:49:20,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639232568] [2023-08-27 00:49:20,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:20,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:49:20,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:49:20,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:49:20,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 721 [2023-08-27 00:49:20,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 95 transitions, 541 flow. Second operand has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:20,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:20,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 721 [2023-08-27 00:49:20,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:21,379 INFO L124 PetriNetUnfolderBase]: 4359/6808 cut-off events. [2023-08-27 00:49:21,379 INFO L125 PetriNetUnfolderBase]: For 1720/1720 co-relation queries the response was YES. [2023-08-27 00:49:21,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16145 conditions, 6808 events. 4359/6808 cut-off events. For 1720/1720 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 35233 event pairs, 3711 based on Foata normal form. 72/6848 useless extension candidates. Maximal degree in co-relation 16118. Up to 6808 conditions per place. [2023-08-27 00:49:21,403 INFO L140 encePairwiseOnDemand]: 718/721 looper letters, 92 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2023-08-27 00:49:21,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 719 flow [2023-08-27 00:49:21,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:49:21,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:49:21,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 946 transitions. [2023-08-27 00:49:21,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4373555247341655 [2023-08-27 00:49:21,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 946 transitions. [2023-08-27 00:49:21,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 946 transitions. [2023-08-27 00:49:21,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:21,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 946 transitions. [2023-08-27 00:49:21,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.3333333333333) internal successors, (946), 3 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:21,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:21,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:21,409 INFO L175 Difference]: Start difference. First operand has 72 places, 95 transitions, 541 flow. Second operand 3 states and 946 transitions. [2023-08-27 00:49:21,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 719 flow [2023-08-27 00:49:21,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 705 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 00:49:21,415 INFO L231 Difference]: Finished difference. Result has 70 places, 93 transitions, 521 flow [2023-08-27 00:49:21,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=521, PETRI_PLACES=70, PETRI_TRANSITIONS=93} [2023-08-27 00:49:21,415 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -8 predicate places. [2023-08-27 00:49:21,415 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 93 transitions, 521 flow [2023-08-27 00:49:21,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:21,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:21,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:21,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 00:49:21,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 00:49:21,621 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:21,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:21,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1309878674, now seen corresponding path program 1 times [2023-08-27 00:49:21,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:21,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409039975] [2023-08-27 00:49:21,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:21,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:49:21,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:21,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409039975] [2023-08-27 00:49:21,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409039975] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:21,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:49:21,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:49:21,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420714376] [2023-08-27 00:49:21,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:21,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:49:21,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:21,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:49:21,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:49:21,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 721 [2023-08-27 00:49:21,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 93 transitions, 521 flow. Second operand has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:21,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:21,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 721 [2023-08-27 00:49:21,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:22,316 INFO L124 PetriNetUnfolderBase]: 4359/6792 cut-off events. [2023-08-27 00:49:22,316 INFO L125 PetriNetUnfolderBase]: For 1702/1702 co-relation queries the response was YES. [2023-08-27 00:49:22,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16107 conditions, 6792 events. 4359/6792 cut-off events. For 1702/1702 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 34816 event pairs, 2942 based on Foata normal form. 16/6776 useless extension candidates. Maximal degree in co-relation 16080. Up to 4135 conditions per place. [2023-08-27 00:49:22,340 INFO L140 encePairwiseOnDemand]: 718/721 looper letters, 75 selfloop transitions, 2 changer transitions 29/106 dead transitions. [2023-08-27 00:49:22,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 106 transitions, 765 flow [2023-08-27 00:49:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:49:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:49:22,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 959 transitions. [2023-08-27 00:49:22,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44336569579288027 [2023-08-27 00:49:22,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 959 transitions. [2023-08-27 00:49:22,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 959 transitions. [2023-08-27 00:49:22,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:22,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 959 transitions. [2023-08-27 00:49:22,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:22,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:22,345 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 721.0) internal successors, (2884), 4 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:22,346 INFO L175 Difference]: Start difference. First operand has 70 places, 93 transitions, 521 flow. Second operand 3 states and 959 transitions. [2023-08-27 00:49:22,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 106 transitions, 765 flow [2023-08-27 00:49:22,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 106 transitions, 764 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:49:22,351 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 351 flow [2023-08-27 00:49:22,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2023-08-27 00:49:22,352 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -6 predicate places. [2023-08-27 00:49:22,352 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 351 flow [2023-08-27 00:49:22,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:22,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:22,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:22,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 00:49:22,353 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:22,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:22,353 INFO L85 PathProgramCache]: Analyzing trace with hash -512582945, now seen corresponding path program 1 times [2023-08-27 00:49:22,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:22,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188873980] [2023-08-27 00:49:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:22,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:49:22,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:22,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188873980] [2023-08-27 00:49:22,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188873980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:22,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:49:22,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 00:49:22,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396949709] [2023-08-27 00:49:22,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:22,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:49:22,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:22,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:49:22,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:49:22,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 721 [2023-08-27 00:49:22,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 307.4) internal successors, (1537), 5 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:22,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:22,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 721 [2023-08-27 00:49:22,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:23,261 INFO L124 PetriNetUnfolderBase]: 5069/6789 cut-off events. [2023-08-27 00:49:23,261 INFO L125 PetriNetUnfolderBase]: For 2925/2925 co-relation queries the response was YES. [2023-08-27 00:49:23,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17589 conditions, 6789 events. 5069/6789 cut-off events. For 2925/2925 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 26345 event pairs, 1639 based on Foata normal form. 198/6983 useless extension candidates. Maximal degree in co-relation 17560. Up to 2697 conditions per place. [2023-08-27 00:49:23,289 INFO L140 encePairwiseOnDemand]: 714/721 looper letters, 113 selfloop transitions, 12 changer transitions 0/125 dead transitions. [2023-08-27 00:49:23,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 125 transitions, 771 flow [2023-08-27 00:49:23,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:49:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:49:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1291 transitions. [2023-08-27 00:49:23,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44764216366158116 [2023-08-27 00:49:23,292 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1291 transitions. [2023-08-27 00:49:23,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1291 transitions. [2023-08-27 00:49:23,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:23,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1291 transitions. [2023-08-27 00:49:23,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 322.75) internal successors, (1291), 4 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:23,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 721.0) internal successors, (3605), 5 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:23,296 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 721.0) internal successors, (3605), 5 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:23,296 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 351 flow. Second operand 4 states and 1291 transitions. [2023-08-27 00:49:23,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 125 transitions, 771 flow [2023-08-27 00:49:23,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 125 transitions, 695 flow, removed 20 selfloop flow, removed 8 redundant places. [2023-08-27 00:49:23,305 INFO L231 Difference]: Finished difference. Result has 67 places, 83 transitions, 379 flow [2023-08-27 00:49:23,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=379, PETRI_PLACES=67, PETRI_TRANSITIONS=83} [2023-08-27 00:49:23,306 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -11 predicate places. [2023-08-27 00:49:23,306 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 83 transitions, 379 flow [2023-08-27 00:49:23,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 307.4) internal successors, (1537), 5 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:23,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:23,307 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:23,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 00:49:23,307 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:23,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:23,307 INFO L85 PathProgramCache]: Analyzing trace with hash 446509329, now seen corresponding path program 1 times [2023-08-27 00:49:23,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:23,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456673671] [2023-08-27 00:49:23,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:23,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:49:23,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:23,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456673671] [2023-08-27 00:49:23,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456673671] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:23,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665877669] [2023-08-27 00:49:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:23,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:23,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:23,545 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:49:23,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 00:49:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:23,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 00:49:23,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:49:23,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:49:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:49:23,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665877669] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:49:23,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:49:23,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 00:49:23,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644383121] [2023-08-27 00:49:23,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:49:23,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 00:49:23,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:23,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 00:49:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-27 00:49:23,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 721 [2023-08-27 00:49:23,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 83 transitions, 379 flow. Second operand has 12 states, 12 states have (on average 256.3333333333333) internal successors, (3076), 12 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:23,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:23,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 721 [2023-08-27 00:49:23,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:24,816 INFO L124 PetriNetUnfolderBase]: 5308/7201 cut-off events. [2023-08-27 00:49:24,817 INFO L125 PetriNetUnfolderBase]: For 7079/7079 co-relation queries the response was YES. [2023-08-27 00:49:24,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21735 conditions, 7201 events. 5308/7201 cut-off events. For 7079/7079 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 28408 event pairs, 3732 based on Foata normal form. 16/7201 useless extension candidates. Maximal degree in co-relation 21710. Up to 6787 conditions per place. [2023-08-27 00:49:24,836 INFO L140 encePairwiseOnDemand]: 714/721 looper letters, 79 selfloop transitions, 3 changer transitions 63/145 dead transitions. [2023-08-27 00:49:24,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 145 transitions, 879 flow [2023-08-27 00:49:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:49:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:49:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1844 transitions. [2023-08-27 00:49:24,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36536556370120865 [2023-08-27 00:49:24,839 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1844 transitions. [2023-08-27 00:49:24,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1844 transitions. [2023-08-27 00:49:24,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:24,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1844 transitions. [2023-08-27 00:49:24,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.42857142857144) internal successors, (1844), 7 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:24,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 721.0) internal successors, (5768), 8 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:24,846 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 721.0) internal successors, (5768), 8 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:24,846 INFO L175 Difference]: Start difference. First operand has 67 places, 83 transitions, 379 flow. Second operand 7 states and 1844 transitions. [2023-08-27 00:49:24,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 145 transitions, 879 flow [2023-08-27 00:49:24,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 145 transitions, 867 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-27 00:49:24,852 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 384 flow [2023-08-27 00:49:24,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2023-08-27 00:49:24,853 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2023-08-27 00:49:24,853 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 384 flow [2023-08-27 00:49:24,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 256.3333333333333) internal successors, (3076), 12 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:24,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:24,853 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:24,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 00:49:25,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:25,059 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:25,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:25,060 INFO L85 PathProgramCache]: Analyzing trace with hash 833852967, now seen corresponding path program 2 times [2023-08-27 00:49:25,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:25,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393446521] [2023-08-27 00:49:25,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:25,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:49:25,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:25,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393446521] [2023-08-27 00:49:25,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393446521] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:25,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507206074] [2023-08-27 00:49:25,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:49:25,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:25,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:25,349 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:49:25,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 00:49:25,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:49:25,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:49:25,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 00:49:25,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:49:25,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:49:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:49:25,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507206074] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:49:25,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:49:25,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 00:49:25,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525208169] [2023-08-27 00:49:25,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:49:25,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 00:49:25,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:25,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 00:49:25,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-08-27 00:49:25,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 721 [2023-08-27 00:49:25,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 384 flow. Second operand has 18 states, 18 states have (on average 254.88888888888889) internal successors, (4588), 18 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:25,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:25,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 721 [2023-08-27 00:49:25,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:26,676 INFO L124 PetriNetUnfolderBase]: 5391/7332 cut-off events. [2023-08-27 00:49:26,676 INFO L125 PetriNetUnfolderBase]: For 7577/7577 co-relation queries the response was YES. [2023-08-27 00:49:26,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21989 conditions, 7332 events. 5391/7332 cut-off events. For 7577/7577 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 29139 event pairs, 3740 based on Foata normal form. 28/7352 useless extension candidates. Maximal degree in co-relation 21959. Up to 6785 conditions per place. [2023-08-27 00:49:26,712 INFO L140 encePairwiseOnDemand]: 714/721 looper letters, 77 selfloop transitions, 4 changer transitions 72/153 dead transitions. [2023-08-27 00:49:26,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 153 transitions, 952 flow [2023-08-27 00:49:26,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 00:49:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 00:49:26,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2356 transitions. [2023-08-27 00:49:26,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36307597472646014 [2023-08-27 00:49:26,718 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2356 transitions. [2023-08-27 00:49:26,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2356 transitions. [2023-08-27 00:49:26,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:26,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2356 transitions. [2023-08-27 00:49:26,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 261.77777777777777) internal successors, (2356), 9 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:26,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 721.0) internal successors, (7210), 10 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:26,728 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 721.0) internal successors, (7210), 10 states have internal predecessors, (7210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:26,728 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 384 flow. Second operand 9 states and 2356 transitions. [2023-08-27 00:49:26,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 153 transitions, 952 flow [2023-08-27 00:49:26,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 153 transitions, 918 flow, removed 15 selfloop flow, removed 5 redundant places. [2023-08-27 00:49:26,737 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 389 flow [2023-08-27 00:49:26,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=389, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2023-08-27 00:49:26,738 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2023-08-27 00:49:26,738 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 389 flow [2023-08-27 00:49:26,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 254.88888888888889) internal successors, (4588), 18 states have internal predecessors, (4588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:26,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:26,739 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:26,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 00:49:26,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:26,949 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:26,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash -920318799, now seen corresponding path program 3 times [2023-08-27 00:49:26,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:26,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497845105] [2023-08-27 00:49:26,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:26,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 00:49:27,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:27,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497845105] [2023-08-27 00:49:27,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497845105] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:27,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650720616] [2023-08-27 00:49:27,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:49:27,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:27,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:27,372 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:49:27,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 00:49:27,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 00:49:27,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:49:27,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 00:49:27,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-27 00:49:27,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:49:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-27 00:49:27,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650720616] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:49:27,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:49:27,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-08-27 00:49:27,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132828997] [2023-08-27 00:49:27,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:49:27,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 00:49:27,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:27,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 00:49:27,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-08-27 00:49:27,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 721 [2023-08-27 00:49:27,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 389 flow. Second operand has 12 states, 12 states have (on average 252.5) internal successors, (3030), 12 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:27,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:27,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 721 [2023-08-27 00:49:27,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:30,564 INFO L124 PetriNetUnfolderBase]: 18367/25265 cut-off events. [2023-08-27 00:49:30,564 INFO L125 PetriNetUnfolderBase]: For 35614/35614 co-relation queries the response was YES. [2023-08-27 00:49:30,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78895 conditions, 25265 events. 18367/25265 cut-off events. For 35614/35614 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 126796 event pairs, 6024 based on Foata normal form. 1976/27233 useless extension candidates. Maximal degree in co-relation 78864. Up to 6441 conditions per place. [2023-08-27 00:49:30,671 INFO L140 encePairwiseOnDemand]: 710/721 looper letters, 154 selfloop transitions, 21 changer transitions 177/352 dead transitions. [2023-08-27 00:49:30,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 352 transitions, 2256 flow [2023-08-27 00:49:30,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 00:49:30,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 00:49:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5912 transitions. [2023-08-27 00:49:30,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35650967858650423 [2023-08-27 00:49:30,679 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5912 transitions. [2023-08-27 00:49:30,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5912 transitions. [2023-08-27 00:49:30,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:30,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5912 transitions. [2023-08-27 00:49:30,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 257.04347826086956) internal successors, (5912), 23 states have internal predecessors, (5912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:30,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 721.0) internal successors, (17304), 24 states have internal predecessors, (17304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:30,696 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 721.0) internal successors, (17304), 24 states have internal predecessors, (17304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:30,696 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 389 flow. Second operand 23 states and 5912 transitions. [2023-08-27 00:49:30,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 352 transitions, 2256 flow [2023-08-27 00:49:30,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 352 transitions, 2136 flow, removed 57 selfloop flow, removed 7 redundant places. [2023-08-27 00:49:30,721 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 468 flow [2023-08-27 00:49:30,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=468, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2023-08-27 00:49:30,722 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2023-08-27 00:49:30,722 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 468 flow [2023-08-27 00:49:30,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 252.5) internal successors, (3030), 12 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:30,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:30,723 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:30,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 00:49:30,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:30,928 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:30,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:30,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1668907217, now seen corresponding path program 1 times [2023-08-27 00:49:30,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:30,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968121861] [2023-08-27 00:49:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:30,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-27 00:49:31,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:31,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968121861] [2023-08-27 00:49:31,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968121861] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:31,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228232378] [2023-08-27 00:49:31,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:31,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:31,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:31,255 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:49:31,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 00:49:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:31,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 00:49:31,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-27 00:49:31,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:49:31,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228232378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:31,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:49:31,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-08-27 00:49:31,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369654912] [2023-08-27 00:49:31,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:31,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:49:31,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:31,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:49:31,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:49:31,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 721 [2023-08-27 00:49:31,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 468 flow. Second operand has 4 states, 4 states have (on average 310.25) internal successors, (1241), 4 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:31,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:31,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 721 [2023-08-27 00:49:31,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:36,409 INFO L124 PetriNetUnfolderBase]: 37563/50282 cut-off events. [2023-08-27 00:49:36,409 INFO L125 PetriNetUnfolderBase]: For 107003/107003 co-relation queries the response was YES. [2023-08-27 00:49:36,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173264 conditions, 50282 events. 37563/50282 cut-off events. For 107003/107003 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 246546 event pairs, 12087 based on Foata normal form. 1340/51619 useless extension candidates. Maximal degree in co-relation 173230. Up to 17356 conditions per place. [2023-08-27 00:49:37,113 INFO L140 encePairwiseOnDemand]: 718/721 looper letters, 154 selfloop transitions, 5 changer transitions 0/159 dead transitions. [2023-08-27 00:49:37,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 159 transitions, 1164 flow [2023-08-27 00:49:37,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:49:37,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:49:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1291 transitions. [2023-08-27 00:49:37,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44764216366158116 [2023-08-27 00:49:37,115 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1291 transitions. [2023-08-27 00:49:37,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1291 transitions. [2023-08-27 00:49:37,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:37,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1291 transitions. [2023-08-27 00:49:37,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 322.75) internal successors, (1291), 4 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:37,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 721.0) internal successors, (3605), 5 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:37,118 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 721.0) internal successors, (3605), 5 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:37,118 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 468 flow. Second operand 4 states and 1291 transitions. [2023-08-27 00:49:37,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 159 transitions, 1164 flow [2023-08-27 00:49:37,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 159 transitions, 1105 flow, removed 18 selfloop flow, removed 10 redundant places. [2023-08-27 00:49:37,215 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 461 flow [2023-08-27 00:49:37,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=721, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=461, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2023-08-27 00:49:37,216 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2023-08-27 00:49:37,216 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 461 flow [2023-08-27 00:49:37,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 310.25) internal successors, (1241), 4 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:37,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:37,216 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:37,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 00:49:37,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 00:49:37,428 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 00:49:37,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:37,428 INFO L85 PathProgramCache]: Analyzing trace with hash 136450847, now seen corresponding path program 1 times [2023-08-27 00:49:37,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:37,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313319398] [2023-08-27 00:49:37,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:37,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:49:44,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:44,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313319398] [2023-08-27 00:49:44,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313319398] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:44,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194484437] [2023-08-27 00:49:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:44,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:44,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:44,877 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:49:44,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 00:49:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:45,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 108 conjunts are in the unsatisfiable core [2023-08-27 00:49:45,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 00:49:47,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:49:57,809 WARN L234 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:50:30,224 WARN L234 SmtUtils]: Spent 32.12s on a formula simplification. DAG size of input: 64 DAG size of output: 60 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:51:20,755 WARN L234 SmtUtils]: Spent 50.24s on a formula simplification. DAG size of input: 66 DAG size of output: 63 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:51:44,993 WARN L234 SmtUtils]: Spent 24.08s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:52:11,361 WARN L234 SmtUtils]: Spent 26.11s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:53:08,106 WARN L234 SmtUtils]: Spent 56.30s on a formula simplification. DAG size of input: 91 DAG size of output: 87 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:54:20,489 WARN L234 SmtUtils]: Spent 1.14m on a formula simplification that was a NOOP. DAG size: 93 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:57:40,305 WARN L234 SmtUtils]: Spent 3.22m on a formula simplification. DAG size of input: 105 DAG size of output: 101 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:58:18,285 WARN L234 SmtUtils]: Spent 37.77s on a formula simplification that was a NOOP. DAG size: 2072 (called from [L 319] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-27 00:58:18,286 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:58:18,288 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 30 select indices, 30 select index equivalence classes, 0 disjoint index pairs (out of 435 index pairs), introduced 30 new quantified variables, introduced 435 case distinctions, treesize of input 583 treesize of output 7744 Received shutdown request... [2023-08-27 01:02:42,141 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 01:02:42,143 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 01:02:42,161 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 01:02:42,163 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONASSERT (60 of 61 remaining) [2023-08-27 01:02:42,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 01:02:42,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-27 01:02:42,364 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. [2023-08-27 01:02:42,365 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 61 remaining) [2023-08-27 01:02:42,365 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 61 remaining) [2023-08-27 01:02:42,365 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 61 remaining) [2023-08-27 01:02:42,366 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 61 remaining) [2023-08-27 01:02:42,366 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 61 remaining) [2023-08-27 01:02:42,366 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 61 remaining) [2023-08-27 01:02:42,366 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 61 remaining) [2023-08-27 01:02:42,366 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 61 remaining) [2023-08-27 01:02:42,366 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 61 remaining) [2023-08-27 01:02:42,366 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 61 remaining) [2023-08-27 01:02:42,366 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 61 remaining) [2023-08-27 01:02:42,368 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 61 remaining) [2023-08-27 01:02:42,369 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 61 remaining) [2023-08-27 01:02:42,369 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 61 remaining) [2023-08-27 01:02:42,370 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 61 remaining) [2023-08-27 01:02:42,370 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 61 remaining) [2023-08-27 01:02:42,370 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 61 remaining) [2023-08-27 01:02:42,370 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 61 remaining) [2023-08-27 01:02:42,370 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 61 remaining) [2023-08-27 01:02:42,370 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 61 remaining) [2023-08-27 01:02:42,370 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 61 remaining) [2023-08-27 01:02:42,371 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 61 remaining) [2023-08-27 01:02:42,371 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 61 remaining) [2023-08-27 01:02:42,371 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 61 remaining) [2023-08-27 01:02:42,371 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 61 remaining) [2023-08-27 01:02:42,371 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 61 remaining) [2023-08-27 01:02:42,371 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 61 remaining) [2023-08-27 01:02:42,371 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 61 remaining) [2023-08-27 01:02:42,372 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 61 remaining) [2023-08-27 01:02:42,372 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 61 remaining) [2023-08-27 01:02:42,372 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 61 remaining) [2023-08-27 01:02:42,372 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 61 remaining) [2023-08-27 01:02:42,372 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 61 remaining) [2023-08-27 01:02:42,372 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 61 remaining) [2023-08-27 01:02:42,372 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 61 remaining) [2023-08-27 01:02:42,372 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 61 remaining) [2023-08-27 01:02:42,372 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 61 remaining) [2023-08-27 01:02:42,372 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 61 remaining) [2023-08-27 01:02:42,373 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 61 remaining) [2023-08-27 01:02:42,373 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 61 remaining) [2023-08-27 01:02:42,373 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 61 remaining) [2023-08-27 01:02:42,373 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 61 remaining) [2023-08-27 01:02:42,373 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 61 remaining) [2023-08-27 01:02:42,373 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 61 remaining) [2023-08-27 01:02:42,373 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 61 remaining) [2023-08-27 01:02:42,373 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 61 remaining) [2023-08-27 01:02:42,373 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 61 remaining) [2023-08-27 01:02:42,373 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 61 remaining) [2023-08-27 01:02:42,374 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 61 remaining) [2023-08-27 01:02:42,374 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 61 remaining) [2023-08-27 01:02:42,374 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 61 remaining) [2023-08-27 01:02:42,374 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 61 remaining) [2023-08-27 01:02:42,374 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 61 remaining) [2023-08-27 01:02:42,374 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 61 remaining) [2023-08-27 01:02:42,375 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 61 remaining) [2023-08-27 01:02:42,375 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 61 remaining) [2023-08-27 01:02:42,375 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 61 remaining) [2023-08-27 01:02:42,375 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 61 remaining) [2023-08-27 01:02:42,375 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 61 remaining) [2023-08-27 01:02:42,375 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 61 remaining) [2023-08-27 01:02:42,376 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:02:42,381 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 01:02:42,381 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 01:02:42,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 01:02:42 BasicIcfg [2023-08-27 01:02:42,383 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 01:02:42,384 INFO L158 Benchmark]: Toolchain (without parser) took 841280.76ms. Allocated memory was 367.0MB in the beginning and 6.2GB in the end (delta: 5.8GB). Free memory was 344.2MB in the beginning and 5.1GB in the end (delta: -4.8GB). Peak memory consumption was 2.7GB. Max. memory is 16.0GB. [2023-08-27 01:02:42,384 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 367.0MB. Free memory is still 344.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 01:02:42,384 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.23ms. Allocated memory is still 367.0MB. Free memory was 343.7MB in the beginning and 330.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 01:02:42,384 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.01ms. Allocated memory is still 367.0MB. Free memory was 330.6MB in the beginning and 326.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 01:02:42,384 INFO L158 Benchmark]: Boogie Preprocessor took 39.80ms. Allocated memory is still 367.0MB. Free memory was 326.9MB in the beginning and 324.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 01:02:42,385 INFO L158 Benchmark]: RCFGBuilder took 1179.37ms. Allocated memory is still 367.0MB. Free memory was 324.3MB in the beginning and 274.2MB in the end (delta: 50.2MB). Peak memory consumption was 50.8MB. Max. memory is 16.0GB. [2023-08-27 01:02:42,385 INFO L158 Benchmark]: TraceAbstraction took 839672.42ms. Allocated memory was 367.0MB in the beginning and 6.2GB in the end (delta: 5.8GB). Free memory was 274.2MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 2.6GB. Max. memory is 16.0GB. [2023-08-27 01:02:42,386 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 367.0MB. Free memory is still 344.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 332.23ms. Allocated memory is still 367.0MB. Free memory was 343.7MB in the beginning and 330.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.01ms. Allocated memory is still 367.0MB. Free memory was 330.6MB in the beginning and 326.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.80ms. Allocated memory is still 367.0MB. Free memory was 326.9MB in the beginning and 324.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 1179.37ms. Allocated memory is still 367.0MB. Free memory was 324.3MB in the beginning and 274.2MB in the end (delta: 50.2MB). Peak memory consumption was 50.8MB. Max. memory is 16.0GB. * TraceAbstraction took 839672.42ms. Allocated memory was 367.0MB in the beginning and 6.2GB in the end (delta: 5.8GB). Free memory was 274.2MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 2.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.8s, 337 PlacesBefore, 78 PlacesAfterwards, 349 TransitionsBefore, 73 TransitionsAfterwards, 5712 CoEnabledTransitionPairs, 7 FixpointIterations, 233 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 40 TrivialYvCompositions, 15 ConcurrentYvCompositions, 17 ChoiceCompositions, 355 TotalNumberOfCompositions, 21443 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8908, independent: 8509, independent conditional: 0, independent unconditional: 8509, dependent: 399, dependent conditional: 0, dependent unconditional: 399, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2938, independent: 2855, independent conditional: 0, independent unconditional: 2855, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8908, independent: 5654, independent conditional: 0, independent unconditional: 5654, dependent: 316, dependent conditional: 0, dependent unconditional: 316, unknown: 2938, unknown conditional: 0, unknown unconditional: 2938] , Statistics on independence cache: Total cache size (in pairs): 529, Positive cache size: 497, Positive conditional cache size: 0, Positive unconditional cache size: 497, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 178]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 176]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 179]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 177]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 134]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 134]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 45 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 35ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 410 locations, 61 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 839.5s, OverallIterations: 23, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 32.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 777 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 777 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 175 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3183 IncrementalHoareTripleChecker+Invalid, 3358 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 175 mSolverCounterUnsat, 0 mSDtfsCounter, 3183 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 461 GetRequests, 353 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=580occurred in iteration=13, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 683 NumberOfCodeBlocks, 667 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 776 ConstructedInterpolants, 0 QuantifiedInterpolants, 2352 SizeOfPredicates, 13 NumberOfNonLiveVariables, 4088 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 36 InterpolantComputations, 18 PerfectInterpolantSequences, 166/204 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown