/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 07:13:46,469 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 07:13:46,542 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 07:13:46,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 07:13:46,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 07:13:46,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 07:13:46,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 07:13:46,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 07:13:46,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 07:13:46,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 07:13:46,574 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 07:13:46,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 07:13:46,575 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 07:13:46,575 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 07:13:46,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 07:13:46,576 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 07:13:46,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 07:13:46,576 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 07:13:46,577 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 07:13:46,577 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 07:13:46,577 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 07:13:46,578 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 07:13:46,579 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 07:13:46,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 07:13:46,579 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 07:13:46,579 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 07:13:46,580 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 07:13:46,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:13:46,580 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 07:13:46,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 07:13:46,581 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 07:13:46,581 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 07:13:46,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 07:13:46,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 07:13:46,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 07:13:46,582 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 07:13:46,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 07:13:46,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 07:13:46,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 07:13:46,919 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 07:13:46,920 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 07:13:46,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c [2023-08-27 07:13:48,076 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 07:13:48,312 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 07:13:48,313 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c [2023-08-27 07:13:48,319 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211edd524/633e21fad37b4ff7988e7670f943023a/FLAG4f410e759 [2023-08-27 07:13:48,330 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211edd524/633e21fad37b4ff7988e7670f943023a [2023-08-27 07:13:48,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 07:13:48,337 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 07:13:48,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 07:13:48,340 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 07:13:48,342 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 07:13:48,343 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:13:48" (1/1) ... [2023-08-27 07:13:48,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600b6be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:13:48, skipping insertion in model container [2023-08-27 07:13:48,344 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:13:48" (1/1) ... [2023-08-27 07:13:48,367 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 07:13:48,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:13:48,569 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 07:13:48,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:13:48,627 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:13:48,628 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:13:48,633 INFO L206 MainTranslator]: Completed translation [2023-08-27 07:13:48,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:13:48 WrapperNode [2023-08-27 07:13:48,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 07:13:48,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 07:13:48,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 07:13:48,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 07:13:48,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:13:48" (1/1) ... [2023-08-27 07:13:48,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:13:48" (1/1) ... [2023-08-27 07:13:48,705 INFO L138 Inliner]: procedures = 26, calls = 56, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 348 [2023-08-27 07:13:48,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 07:13:48,706 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 07:13:48,706 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 07:13:48,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 07:13:48,719 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:13:48" (1/1) ... [2023-08-27 07:13:48,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:13:48" (1/1) ... [2023-08-27 07:13:48,729 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:13:48" (1/1) ... [2023-08-27 07:13:48,729 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:13:48" (1/1) ... [2023-08-27 07:13:48,752 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:13:48" (1/1) ... [2023-08-27 07:13:48,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:13:48" (1/1) ... [2023-08-27 07:13:48,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:13:48" (1/1) ... [2023-08-27 07:13:48,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:13:48" (1/1) ... [2023-08-27 07:13:48,762 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 07:13:48,763 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 07:13:48,763 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 07:13:48,763 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 07:13:48,764 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:13:48" (1/1) ... [2023-08-27 07:13:48,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:13:48,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:48,809 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 07:13:48,830 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 07:13:48,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 07:13:48,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 07:13:48,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 07:13:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 07:13:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 07:13:48,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 07:13:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 07:13:48,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 07:13:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 07:13:48,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 07:13:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 07:13:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 07:13:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 07:13:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 07:13:48,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 07:13:48,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 07:13:48,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 07:13:48,849 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 07:13:48,980 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 07:13:48,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 07:13:49,492 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 07:13:49,923 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 07:13:49,923 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-27 07:13:49,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:13:49 BoogieIcfgContainer [2023-08-27 07:13:49,925 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 07:13:49,927 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 07:13:49,927 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 07:13:49,930 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 07:13:49,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:13:48" (1/3) ... [2023-08-27 07:13:49,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39279ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:13:49, skipping insertion in model container [2023-08-27 07:13:49,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:13:48" (2/3) ... [2023-08-27 07:13:49,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39279ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:13:49, skipping insertion in model container [2023-08-27 07:13:49,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:13:49" (3/3) ... [2023-08-27 07:13:49,932 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2023-08-27 07:13:49,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 07:13:49,948 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2023-08-27 07:13:49,948 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 07:13:50,118 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 07:13:50,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 298 transitions, 620 flow [2023-08-27 07:13:50,248 INFO L124 PetriNetUnfolderBase]: 25/295 cut-off events. [2023-08-27 07:13:50,248 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 07:13:50,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 295 events. 25/295 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 611 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-08-27 07:13:50,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 298 transitions, 620 flow [2023-08-27 07:13:50,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 284 transitions, 586 flow [2023-08-27 07:13:50,264 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 07:13:50,271 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 284 transitions, 586 flow [2023-08-27 07:13:50,274 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 284 transitions, 586 flow [2023-08-27 07:13:50,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 284 transitions, 586 flow [2023-08-27 07:13:50,349 INFO L124 PetriNetUnfolderBase]: 25/284 cut-off events. [2023-08-27 07:13:50,349 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 07:13:50,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 284 events. 25/284 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 614 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-08-27 07:13:50,361 INFO L119 LiptonReduction]: Number of co-enabled transitions 14784 [2023-08-27 07:14:08,100 INFO L134 LiptonReduction]: Checked pairs total: 25303 [2023-08-27 07:14:08,101 INFO L136 LiptonReduction]: Total number of compositions: 318 [2023-08-27 07:14:08,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 07:14:08,119 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;@30bf40a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 07:14:08,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2023-08-27 07:14:08,121 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 07:14:08,121 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 07:14:08,121 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 07:14:08,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:08,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 07:14:08,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:14:08,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:08,127 INFO L85 PathProgramCache]: Analyzing trace with hash 50571, now seen corresponding path program 1 times [2023-08-27 07:14:08,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:08,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491232012] [2023-08-27 07:14:08,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:08,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:08,391 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 07:14:08,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:08,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491232012] [2023-08-27 07:14:08,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491232012] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:14:08,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:14:08,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:14:08,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800460861] [2023-08-27 07:14:08,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:14:08,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:14:08,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:08,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:14:08,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:14:08,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 616 [2023-08-27 07:14:08,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:08,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:08,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 616 [2023-08-27 07:14:08,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:10,589 INFO L124 PetriNetUnfolderBase]: 13488/18255 cut-off events. [2023-08-27 07:14:10,589 INFO L125 PetriNetUnfolderBase]: For 609/609 co-relation queries the response was YES. [2023-08-27 07:14:10,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37025 conditions, 18255 events. 13488/18255 cut-off events. For 609/609 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 103125 event pairs, 10314 based on Foata normal form. 0/6521 useless extension candidates. Maximal degree in co-relation 34641. Up to 18228 conditions per place. [2023-08-27 07:14:10,707 INFO L140 encePairwiseOnDemand]: 601/616 looper letters, 58 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2023-08-27 07:14:10,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 276 flow [2023-08-27 07:14:10,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:14:10,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:14:10,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 784 transitions. [2023-08-27 07:14:10,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2023-08-27 07:14:10,721 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 784 transitions. [2023-08-27 07:14:10,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 784 transitions. [2023-08-27 07:14:10,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:10,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 784 transitions. [2023-08-27 07:14:10,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states 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 07:14:10,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:14:10,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:14:10,738 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 154 flow. Second operand 3 states and 784 transitions. [2023-08-27 07:14:10,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 276 flow [2023-08-27 07:14:10,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 264 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 07:14:10,767 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 174 flow [2023-08-27 07:14:10,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2023-08-27 07:14:10,771 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -8 predicate places. [2023-08-27 07:14:10,771 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 174 flow [2023-08-27 07:14:10,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:10,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:10,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:14:10,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 07:14:10,772 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:14:10,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:10,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1569819, now seen corresponding path program 1 times [2023-08-27 07:14:10,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:10,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995048742] [2023-08-27 07:14:10,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:10,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:10,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:10,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995048742] [2023-08-27 07:14:10,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995048742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:14:10,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:14:10,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:14:10,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402076051] [2023-08-27 07:14:10,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:14:10,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:14:10,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:10,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:14:10,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:14:10,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 616 [2023-08-27 07:14:10,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 states 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 07:14:10,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:10,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 616 [2023-08-27 07:14:10,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:12,710 INFO L124 PetriNetUnfolderBase]: 13488/18253 cut-off events. [2023-08-27 07:14:12,711 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-08-27 07:14:12,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36684 conditions, 18253 events. 13488/18253 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 103110 event pairs, 10314 based on Foata normal form. 0/6523 useless extension candidates. Maximal degree in co-relation 36642. Up to 18220 conditions per place. [2023-08-27 07:14:12,796 INFO L140 encePairwiseOnDemand]: 612/616 looper letters, 58 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-27 07:14:12,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 288 flow [2023-08-27 07:14:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:14:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:14:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 770 transitions. [2023-08-27 07:14:12,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-27 07:14:12,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 770 transitions. [2023-08-27 07:14:12,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 770 transitions. [2023-08-27 07:14:12,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:12,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 770 transitions. [2023-08-27 07:14:12,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 07:14:12,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:14:12,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:14:12,809 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 174 flow. Second operand 3 states and 770 transitions. [2023-08-27 07:14:12,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 288 flow [2023-08-27 07:14:12,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 64 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:14:12,812 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 162 flow [2023-08-27 07:14:12,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2023-08-27 07:14:12,813 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -10 predicate places. [2023-08-27 07:14:12,814 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 162 flow [2023-08-27 07:14:12,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 states 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 07:14:12,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:12,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:14:12,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 07:14:12,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:14:12,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:12,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1569840, now seen corresponding path program 1 times [2023-08-27 07:14:12,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:12,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174399291] [2023-08-27 07:14:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:12,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:12,925 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 07:14:12,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:12,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174399291] [2023-08-27 07:14:12,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174399291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:12,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823334670] [2023-08-27 07:14:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:12,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:12,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:12,929 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 07:14:12,956 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 07:14:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:13,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:14:13,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:13,140 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 07:14:13,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:13,153 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 07:14:13,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823334670] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:13,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:13,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 07:14:13,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276536069] [2023-08-27 07:14:13,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:13,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:14:13,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:13,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:14:13,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:14:13,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 616 [2023-08-27 07:14:13,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 238.14285714285714) internal successors, (1667), 7 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states 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 07:14:13,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:13,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 616 [2023-08-27 07:14:13,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:14,819 INFO L124 PetriNetUnfolderBase]: 13494/18265 cut-off events. [2023-08-27 07:14:14,819 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-08-27 07:14:14,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36721 conditions, 18265 events. 13494/18265 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 103439 event pairs, 10314 based on Foata normal form. 0/6532 useless extension candidates. Maximal degree in co-relation 36642. Up to 18229 conditions per place. [2023-08-27 07:14:14,897 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 56 selfloop transitions, 17 changer transitions 0/76 dead transitions. [2023-08-27 07:14:14,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 362 flow [2023-08-27 07:14:14,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:14:14,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:14:14,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1501 transitions. [2023-08-27 07:14:14,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061147186147186 [2023-08-27 07:14:14,901 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1501 transitions. [2023-08-27 07:14:14,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1501 transitions. [2023-08-27 07:14:14,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:14,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1501 transitions. [2023-08-27 07:14:14,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.16666666666666) internal successors, (1501), 6 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states 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 07:14:14,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 07:14:14,913 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 07:14:14,913 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 162 flow. Second operand 6 states and 1501 transitions. [2023-08-27 07:14:14,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 362 flow [2023-08-27 07:14:14,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:14:14,917 INFO L231 Difference]: Finished difference. Result has 66 places, 76 transitions, 274 flow [2023-08-27 07:14:14,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=66, PETRI_TRANSITIONS=76} [2023-08-27 07:14:14,918 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-08-27 07:14:14,918 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 76 transitions, 274 flow [2023-08-27 07:14:14,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 238.14285714285714) internal successors, (1667), 7 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states 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 07:14:14,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:14,920 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 07:14:14,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 07:14:15,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:15,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:14:15,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:15,132 INFO L85 PathProgramCache]: Analyzing trace with hash -476059232, now seen corresponding path program 2 times [2023-08-27 07:14:15,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:15,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564539596] [2023-08-27 07:14:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:15,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:15,275 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 07:14:15,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:15,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564539596] [2023-08-27 07:14:15,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564539596] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:15,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669246221] [2023-08-27 07:14:15,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:14:15,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:15,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:15,278 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 07:14:15,279 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 07:14:15,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 07:14:15,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:14:15,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 07:14:15,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:15,490 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 07:14:15,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:14:15,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669246221] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:14:15,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:14:15,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 07:14:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033184633] [2023-08-27 07:14:15,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:14:15,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:14:15,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:15,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:14:15,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 07:14:15,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 616 [2023-08-27 07:14:15,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 76 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states 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 07:14:15,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:15,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 616 [2023-08-27 07:14:15,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:17,003 INFO L124 PetriNetUnfolderBase]: 13494/18264 cut-off events. [2023-08-27 07:14:17,003 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2023-08-27 07:14:17,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36750 conditions, 18264 events. 13494/18264 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 103543 event pairs, 10314 based on Foata normal form. 1/6535 useless extension candidates. Maximal degree in co-relation 36691. Up to 18234 conditions per place. [2023-08-27 07:14:17,089 INFO L140 encePairwiseOnDemand]: 613/616 looper letters, 66 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-08-27 07:14:17,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 75 transitions, 408 flow [2023-08-27 07:14:17,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:14:17,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:14:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 774 transitions. [2023-08-27 07:14:17,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41883116883116883 [2023-08-27 07:14:17,093 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 774 transitions. [2023-08-27 07:14:17,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 774 transitions. [2023-08-27 07:14:17,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:17,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 774 transitions. [2023-08-27 07:14:17,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 07:14:17,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:14:17,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:14:17,100 INFO L175 Difference]: Start difference. First operand has 66 places, 76 transitions, 274 flow. Second operand 3 states and 774 transitions. [2023-08-27 07:14:17,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 75 transitions, 408 flow [2023-08-27 07:14:17,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 382 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 07:14:17,103 INFO L231 Difference]: Finished difference. Result has 66 places, 75 transitions, 250 flow [2023-08-27 07:14:17,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=66, PETRI_TRANSITIONS=75} [2023-08-27 07:14:17,104 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-08-27 07:14:17,104 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 75 transitions, 250 flow [2023-08-27 07:14:17,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states 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 07:14:17,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:17,105 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 07:14:17,115 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 07:14:17,310 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 07:14:17,311 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:14:17,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:17,311 INFO L85 PathProgramCache]: Analyzing trace with hash -931033796, now seen corresponding path program 1 times [2023-08-27 07:14:17,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:17,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730817531] [2023-08-27 07:14:17,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:17,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:17,442 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 07:14:17,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:17,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730817531] [2023-08-27 07:14:17,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730817531] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:17,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110300507] [2023-08-27 07:14:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:17,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:17,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:17,445 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 07:14:17,448 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 07:14:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:17,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 07:14:17,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:17,630 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 07:14:17,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:17,684 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 07:14:17,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110300507] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:17,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:17,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 07:14:17,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388743691] [2023-08-27 07:14:17,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:17,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 07:14:17,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 07:14:17,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 07:14:17,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 616 [2023-08-27 07:14:17,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 75 transitions, 250 flow. Second operand has 13 states, 13 states have (on average 238.15384615384616) internal successors, (3096), 13 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states 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 07:14:17,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:17,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 616 [2023-08-27 07:14:17,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:19,219 INFO L124 PetriNetUnfolderBase]: 13506/18288 cut-off events. [2023-08-27 07:14:19,219 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2023-08-27 07:14:19,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36839 conditions, 18288 events. 13506/18288 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 1410. Compared 103311 event pairs, 10314 based on Foata normal form. 6/6560 useless extension candidates. Maximal degree in co-relation 36736. Up to 18234 conditions per place. [2023-08-27 07:14:19,328 INFO L140 encePairwiseOnDemand]: 610/616 looper letters, 55 selfloop transitions, 41 changer transitions 0/99 dead transitions. [2023-08-27 07:14:19,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 99 transitions, 592 flow [2023-08-27 07:14:19,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 07:14:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 07:14:19,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2946 transitions. [2023-08-27 07:14:19,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398538961038961 [2023-08-27 07:14:19,337 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2946 transitions. [2023-08-27 07:14:19,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2946 transitions. [2023-08-27 07:14:19,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:19,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2946 transitions. [2023-08-27 07:14:19,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 245.5) internal successors, (2946), 12 states have internal predecessors, (2946), 0 states have call successors, (0), 0 states 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 07:14:19,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 616.0) internal successors, (8008), 13 states have internal predecessors, (8008), 0 states have call successors, (0), 0 states 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 07:14:19,360 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 616.0) internal successors, (8008), 13 states have internal predecessors, (8008), 0 states have call successors, (0), 0 states 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 07:14:19,360 INFO L175 Difference]: Start difference. First operand has 66 places, 75 transitions, 250 flow. Second operand 12 states and 2946 transitions. [2023-08-27 07:14:19,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 99 transitions, 592 flow [2023-08-27 07:14:19,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 568 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:14:19,363 INFO L231 Difference]: Finished difference. Result has 81 places, 99 transitions, 512 flow [2023-08-27 07:14:19,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=512, PETRI_PLACES=81, PETRI_TRANSITIONS=99} [2023-08-27 07:14:19,364 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 11 predicate places. [2023-08-27 07:14:19,364 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 99 transitions, 512 flow [2023-08-27 07:14:19,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 238.15384615384616) internal successors, (3096), 13 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states 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 07:14:19,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:19,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:19,374 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 07:14:19,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:19,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:14:19,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:19,572 INFO L85 PathProgramCache]: Analyzing trace with hash -938974905, now seen corresponding path program 1 times [2023-08-27 07:14:19,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:19,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492800746] [2023-08-27 07:14:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:19,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:19,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:19,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492800746] [2023-08-27 07:14:19,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492800746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:14:19,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:14:19,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:14:19,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019881638] [2023-08-27 07:14:19,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:14:19,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:14:19,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:19,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:14:19,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:14:19,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 616 [2023-08-27 07:14:19,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 99 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 0 states have call successors, (0), 0 states 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 07:14:19,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:19,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 616 [2023-08-27 07:14:19,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:21,852 INFO L124 PetriNetUnfolderBase]: 22377/30219 cut-off events. [2023-08-27 07:14:21,852 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2023-08-27 07:14:21,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60908 conditions, 30219 events. 22377/30219 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 1904. Compared 183614 event pairs, 10413 based on Foata normal form. 0/10943 useless extension candidates. Maximal degree in co-relation 60828. Up to 18370 conditions per place. [2023-08-27 07:14:22,033 INFO L140 encePairwiseOnDemand]: 611/616 looper letters, 135 selfloop transitions, 3 changer transitions 0/140 dead transitions. [2023-08-27 07:14:22,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 140 transitions, 872 flow [2023-08-27 07:14:22,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:14:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:14:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 835 transitions. [2023-08-27 07:14:22,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518398268398268 [2023-08-27 07:14:22,036 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 835 transitions. [2023-08-27 07:14:22,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 835 transitions. [2023-08-27 07:14:22,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:22,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 835 transitions. [2023-08-27 07:14:22,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 states 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 07:14:22,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:14:22,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:14:22,042 INFO L175 Difference]: Start difference. First operand has 81 places, 99 transitions, 512 flow. Second operand 3 states and 835 transitions. [2023-08-27 07:14:22,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 140 transitions, 872 flow [2023-08-27 07:14:22,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 140 transitions, 748 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-27 07:14:22,046 INFO L231 Difference]: Finished difference. Result has 79 places, 101 transitions, 409 flow [2023-08-27 07:14:22,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=409, PETRI_PLACES=79, PETRI_TRANSITIONS=101} [2023-08-27 07:14:22,047 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 9 predicate places. [2023-08-27 07:14:22,047 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 101 transitions, 409 flow [2023-08-27 07:14:22,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 0 states have call successors, (0), 0 states 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 07:14:22,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:22,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:22,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 07:14:22,047 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:14:22,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:22,048 INFO L85 PathProgramCache]: Analyzing trace with hash 956545445, now seen corresponding path program 1 times [2023-08-27 07:14:22,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:22,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664412527] [2023-08-27 07:14:22,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:22,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:22,131 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 07:14:22,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:22,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664412527] [2023-08-27 07:14:22,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664412527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:14:22,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:14:22,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 07:14:22,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025563161] [2023-08-27 07:14:22,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:14:22,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:14:22,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:22,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:14:22,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:14:22,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 616 [2023-08-27 07:14:22,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 101 transitions, 409 flow. Second operand has 5 states, 5 states have (on average 216.6) internal successors, (1083), 5 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states 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 07:14:22,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:22,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 616 [2023-08-27 07:14:22,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:25,001 INFO L124 PetriNetUnfolderBase]: 22253/30107 cut-off events. [2023-08-27 07:14:25,001 INFO L125 PetriNetUnfolderBase]: For 2537/2537 co-relation queries the response was YES. [2023-08-27 07:14:25,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63671 conditions, 30107 events. 22253/30107 cut-off events. For 2537/2537 co-relation queries the response was YES. Maximal size of possible extension queue 1826. Compared 176263 event pairs, 17321 based on Foata normal form. 9/12203 useless extension candidates. Maximal degree in co-relation 63581. Up to 30068 conditions per place. [2023-08-27 07:14:25,133 INFO L140 encePairwiseOnDemand]: 612/616 looper letters, 108 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2023-08-27 07:14:25,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 113 transitions, 718 flow [2023-08-27 07:14:25,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:14:25,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:14:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 922 transitions. [2023-08-27 07:14:25,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741883116883117 [2023-08-27 07:14:25,139 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 922 transitions. [2023-08-27 07:14:25,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 922 transitions. [2023-08-27 07:14:25,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:25,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 922 transitions. [2023-08-27 07:14:25,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 230.5) internal successors, (922), 4 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 07:14:25,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 616.0) internal successors, (3080), 5 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 07:14:25,145 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 616.0) internal successors, (3080), 5 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 07:14:25,145 INFO L175 Difference]: Start difference. First operand has 79 places, 101 transitions, 409 flow. Second operand 4 states and 922 transitions. [2023-08-27 07:14:25,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 113 transitions, 718 flow [2023-08-27 07:14:25,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 113 transitions, 715 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:14:25,150 INFO L231 Difference]: Finished difference. Result has 82 places, 101 transitions, 435 flow [2023-08-27 07:14:25,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=82, PETRI_TRANSITIONS=101} [2023-08-27 07:14:25,151 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 12 predicate places. [2023-08-27 07:14:25,151 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 101 transitions, 435 flow [2023-08-27 07:14:25,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.6) internal successors, (1083), 5 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states 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 07:14:25,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:25,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:25,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 07:14:25,152 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:14:25,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:25,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1409172427, now seen corresponding path program 1 times [2023-08-27 07:14:25,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:25,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117521312] [2023-08-27 07:14:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:25,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:25,265 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 07:14:25,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:25,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117521312] [2023-08-27 07:14:25,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117521312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:14:25,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:14:25,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 07:14:25,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748488977] [2023-08-27 07:14:25,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:14:25,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:14:25,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:25,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:14:25,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:14:25,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 616 [2023-08-27 07:14:25,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 101 transitions, 435 flow. Second operand has 5 states, 5 states have (on average 196.8) internal successors, (984), 5 states have internal predecessors, (984), 0 states have call successors, (0), 0 states 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 07:14:25,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:25,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 616 [2023-08-27 07:14:25,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:30,469 INFO L124 PetriNetUnfolderBase]: 47051/63388 cut-off events. [2023-08-27 07:14:30,469 INFO L125 PetriNetUnfolderBase]: For 3680/3680 co-relation queries the response was YES. [2023-08-27 07:14:30,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133593 conditions, 63388 events. 47051/63388 cut-off events. For 3680/3680 co-relation queries the response was YES. Maximal size of possible extension queue 3565. Compared 402249 event pairs, 33807 based on Foata normal form. 680/26492 useless extension candidates. Maximal degree in co-relation 133508. Up to 30733 conditions per place. [2023-08-27 07:14:30,992 INFO L140 encePairwiseOnDemand]: 606/616 looper letters, 166 selfloop transitions, 20 changer transitions 0/188 dead transitions. [2023-08-27 07:14:30,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 188 transitions, 1011 flow [2023-08-27 07:14:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:14:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:14:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1119 transitions. [2023-08-27 07:14:30,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3633116883116883 [2023-08-27 07:14:30,996 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1119 transitions. [2023-08-27 07:14:30,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1119 transitions. [2023-08-27 07:14:30,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:30,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1119 transitions. [2023-08-27 07:14:30,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 223.8) internal successors, (1119), 5 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states 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 07:14:31,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 07:14:31,004 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 616.0) internal successors, (3696), 6 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 07:14:31,004 INFO L175 Difference]: Start difference. First operand has 82 places, 101 transitions, 435 flow. Second operand 5 states and 1119 transitions. [2023-08-27 07:14:31,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 188 transitions, 1011 flow [2023-08-27 07:14:31,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 188 transitions, 1005 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 07:14:31,011 INFO L231 Difference]: Finished difference. Result has 87 places, 108 transitions, 522 flow [2023-08-27 07:14:31,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=522, PETRI_PLACES=87, PETRI_TRANSITIONS=108} [2023-08-27 07:14:31,012 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 17 predicate places. [2023-08-27 07:14:31,012 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 108 transitions, 522 flow [2023-08-27 07:14:31,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.8) internal successors, (984), 5 states have internal predecessors, (984), 0 states have call successors, (0), 0 states 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 07:14:31,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:31,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:31,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 07:14:31,013 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:14:31,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:31,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1939177489, now seen corresponding path program 1 times [2023-08-27 07:14:31,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:31,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164763567] [2023-08-27 07:14:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:31,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:31,072 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 07:14:31,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:31,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164763567] [2023-08-27 07:14:31,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164763567] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:14:31,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:14:31,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:14:31,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063914363] [2023-08-27 07:14:31,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:14:31,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:14:31,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:31,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:14:31,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:14:31,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 616 [2023-08-27 07:14:31,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 108 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 07:14:31,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:31,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 616 [2023-08-27 07:14:31,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:39,816 INFO L124 PetriNetUnfolderBase]: 69793/93600 cut-off events. [2023-08-27 07:14:39,816 INFO L125 PetriNetUnfolderBase]: For 13759/14429 co-relation queries the response was YES. [2023-08-27 07:14:40,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209883 conditions, 93600 events. 69793/93600 cut-off events. For 13759/14429 co-relation queries the response was YES. Maximal size of possible extension queue 4755. Compared 614795 event pairs, 37314 based on Foata normal form. 668/37669 useless extension candidates. Maximal degree in co-relation 209786. Up to 61620 conditions per place. [2023-08-27 07:14:40,411 INFO L140 encePairwiseOnDemand]: 609/616 looper letters, 134 selfloop transitions, 11 changer transitions 0/148 dead transitions. [2023-08-27 07:14:40,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 148 transitions, 916 flow [2023-08-27 07:14:40,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:14:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:14:40,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2023-08-27 07:14:40,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45346320346320346 [2023-08-27 07:14:40,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 838 transitions. [2023-08-27 07:14:40,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 838 transitions. [2023-08-27 07:14:40,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:40,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 838 transitions. [2023-08-27 07:14:40,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 0 states have call successors, (0), 0 states 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 07:14:40,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:14:40,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:14:40,418 INFO L175 Difference]: Start difference. First operand has 87 places, 108 transitions, 522 flow. Second operand 3 states and 838 transitions. [2023-08-27 07:14:40,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 148 transitions, 916 flow [2023-08-27 07:14:40,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 148 transitions, 888 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 07:14:40,447 INFO L231 Difference]: Finished difference. Result has 88 places, 113 transitions, 567 flow [2023-08-27 07:14:40,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=567, PETRI_PLACES=88, PETRI_TRANSITIONS=113} [2023-08-27 07:14:40,448 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 18 predicate places. [2023-08-27 07:14:40,448 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 113 transitions, 567 flow [2023-08-27 07:14:40,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 07:14:40,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:40,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:40,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 07:14:40,449 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:14:40,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:40,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1939177665, now seen corresponding path program 1 times [2023-08-27 07:14:40,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:40,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759067778] [2023-08-27 07:14:40,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:40,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:40,625 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 07:14:40,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:40,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759067778] [2023-08-27 07:14:40,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759067778] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:40,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15115755] [2023-08-27 07:14:40,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:40,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:40,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:40,627 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 07:14:40,633 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 07:14:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:40,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 07:14:40,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:40,846 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 07:14:40,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:40,883 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-08-27 07:14:40,925 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 07:14:40,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15115755] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:40,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:40,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2023-08-27 07:14:40,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235201317] [2023-08-27 07:14:40,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:40,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 07:14:40,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:40,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 07:14:40,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-27 07:14:40,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 616 [2023-08-27 07:14:40,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 113 transitions, 567 flow. Second operand has 13 states, 13 states have (on average 196.6153846153846) internal successors, (2556), 13 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states 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 07:14:40,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:40,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 616 [2023-08-27 07:14:40,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:55,225 INFO L124 PetriNetUnfolderBase]: 109677/146713 cut-off events. [2023-08-27 07:14:55,225 INFO L125 PetriNetUnfolderBase]: For 50537/50537 co-relation queries the response was YES. [2023-08-27 07:14:55,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358959 conditions, 146713 events. 109677/146713 cut-off events. For 50537/50537 co-relation queries the response was YES. Maximal size of possible extension queue 7080. Compared 989009 event pairs, 78115 based on Foata normal form. 680/63416 useless extension candidates. Maximal degree in co-relation 358863. Up to 94802 conditions per place. [2023-08-27 07:14:56,189 INFO L140 encePairwiseOnDemand]: 605/616 looper letters, 173 selfloop transitions, 30 changer transitions 0/205 dead transitions. [2023-08-27 07:14:56,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 205 transitions, 1275 flow [2023-08-27 07:14:56,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:14:56,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:14:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1511 transitions. [2023-08-27 07:14:56,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.350417439703154 [2023-08-27 07:14:56,193 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1511 transitions. [2023-08-27 07:14:56,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1511 transitions. [2023-08-27 07:14:56,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:56,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1511 transitions. [2023-08-27 07:14:56,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 215.85714285714286) internal successors, (1511), 7 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states 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 07:14:56,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 07:14:56,202 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 616.0) internal successors, (4928), 8 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states 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 07:14:56,202 INFO L175 Difference]: Start difference. First operand has 88 places, 113 transitions, 567 flow. Second operand 7 states and 1511 transitions. [2023-08-27 07:14:56,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 205 transitions, 1275 flow [2023-08-27 07:14:56,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 205 transitions, 1254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:14:56,241 INFO L231 Difference]: Finished difference. Result has 95 places, 120 transitions, 708 flow [2023-08-27 07:14:56,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=708, PETRI_PLACES=95, PETRI_TRANSITIONS=120} [2023-08-27 07:14:56,242 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 25 predicate places. [2023-08-27 07:14:56,242 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 120 transitions, 708 flow [2023-08-27 07:14:56,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 196.6153846153846) internal successors, (2556), 13 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states 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 07:14:56,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:56,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:56,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 07:14:56,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:56,449 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:14:56,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:56,450 INFO L85 PathProgramCache]: Analyzing trace with hash -366261655, now seen corresponding path program 1 times [2023-08-27 07:14:56,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:56,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359526974] [2023-08-27 07:14:56,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:56,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:56,499 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 07:14:56,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:56,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359526974] [2023-08-27 07:14:56,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359526974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:14:56,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:14:56,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:14:56,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481278981] [2023-08-27 07:14:56,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:14:56,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:14:56,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:56,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:14:56,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:14:56,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 616 [2023-08-27 07:14:56,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 120 transitions, 708 flow. Second operand has 3 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 07:14:56,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:56,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 616 [2023-08-27 07:14:56,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:15:19,082 INFO L124 PetriNetUnfolderBase]: 180076/240845 cut-off events. [2023-08-27 07:15:19,082 INFO L125 PetriNetUnfolderBase]: For 167971/169684 co-relation queries the response was YES. [2023-08-27 07:15:20,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606750 conditions, 240845 events. 180076/240845 cut-off events. For 167971/169684 co-relation queries the response was YES. Maximal size of possible extension queue 9708. Compared 1660754 event pairs, 88773 based on Foata normal form. 1707/105007 useless extension candidates. Maximal degree in co-relation 606648. Up to 143011 conditions per place. [2023-08-27 07:15:20,922 INFO L140 encePairwiseOnDemand]: 611/616 looper letters, 175 selfloop transitions, 3 changer transitions 0/180 dead transitions. [2023-08-27 07:15:20,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 180 transitions, 1388 flow [2023-08-27 07:15:20,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:15:20,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:15:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 835 transitions. [2023-08-27 07:15:20,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518398268398268 [2023-08-27 07:15:20,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 835 transitions. [2023-08-27 07:15:20,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 835 transitions. [2023-08-27 07:15:20,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:15:20,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 835 transitions. [2023-08-27 07:15:20,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 states 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 07:15:20,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:15:20,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:15:20,929 INFO L175 Difference]: Start difference. First operand has 95 places, 120 transitions, 708 flow. Second operand 3 states and 835 transitions. [2023-08-27 07:15:20,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 180 transitions, 1388 flow [2023-08-27 07:15:20,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 180 transitions, 1369 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 07:15:20,983 INFO L231 Difference]: Finished difference. Result has 97 places, 122 transitions, 712 flow [2023-08-27 07:15:20,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=712, PETRI_PLACES=97, PETRI_TRANSITIONS=122} [2023-08-27 07:15:20,984 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 27 predicate places. [2023-08-27 07:15:20,984 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 122 transitions, 712 flow [2023-08-27 07:15:20,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 07:15:20,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:15:20,984 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:15:20,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 07:15:20,985 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:15:20,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:15:20,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1294484075, now seen corresponding path program 1 times [2023-08-27 07:15:20,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:15:20,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082716208] [2023-08-27 07:15:20,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:15:20,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:15:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:15:21,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:15:21,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:15:21,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082716208] [2023-08-27 07:15:21,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082716208] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:15:21,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997794795] [2023-08-27 07:15:21,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:15:21,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:15:21,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:15:21,073 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 07:15:21,103 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 07:15:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:15:21,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 07:15:21,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:15:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:15:21,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:15:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:15:21,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997794795] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:15:21,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:15:21,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-27 07:15:21,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623164609] [2023-08-27 07:15:21,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:15:21,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 07:15:21,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:15:21,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 07:15:21,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-27 07:15:21,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 616 [2023-08-27 07:15:21,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 122 transitions, 712 flow. Second operand has 13 states, 13 states have (on average 217.23076923076923) internal successors, (2824), 13 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states 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 07:15:21,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:15:21,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 616 [2023-08-27 07:15:21,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:15:56,198 INFO L124 PetriNetUnfolderBase]: 259710/350009 cut-off events. [2023-08-27 07:15:56,199 INFO L125 PetriNetUnfolderBase]: For 167733/171963 co-relation queries the response was YES. [2023-08-27 07:15:57,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881281 conditions, 350009 events. 259710/350009 cut-off events. For 167733/171963 co-relation queries the response was YES. Maximal size of possible extension queue 13546. Compared 2607001 event pairs, 98333 based on Foata normal form. 5874/176454 useless extension candidates. Maximal degree in co-relation 881144. Up to 112418 conditions per place. [2023-08-27 07:15:58,685 INFO L140 encePairwiseOnDemand]: 606/616 looper letters, 325 selfloop transitions, 22 changer transitions 0/349 dead transitions. [2023-08-27 07:15:58,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 349 transitions, 2248 flow [2023-08-27 07:15:58,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 07:15:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 07:15:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2828 transitions. [2023-08-27 07:15:58,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38257575757575757 [2023-08-27 07:15:58,689 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2828 transitions. [2023-08-27 07:15:58,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2828 transitions. [2023-08-27 07:15:58,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:15:58,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2828 transitions. [2023-08-27 07:15:58,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 235.66666666666666) internal successors, (2828), 12 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states 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 07:15:58,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 616.0) internal successors, (8008), 13 states have internal predecessors, (8008), 0 states have call successors, (0), 0 states 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 07:15:58,703 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 616.0) internal successors, (8008), 13 states have internal predecessors, (8008), 0 states have call successors, (0), 0 states 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 07:15:58,703 INFO L175 Difference]: Start difference. First operand has 97 places, 122 transitions, 712 flow. Second operand 12 states and 2828 transitions. [2023-08-27 07:15:58,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 349 transitions, 2248 flow [2023-08-27 07:15:59,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 349 transitions, 2235 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:15:59,820 INFO L231 Difference]: Finished difference. Result has 110 places, 128 transitions, 826 flow [2023-08-27 07:15:59,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=826, PETRI_PLACES=110, PETRI_TRANSITIONS=128} [2023-08-27 07:15:59,820 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 40 predicate places. [2023-08-27 07:15:59,820 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 128 transitions, 826 flow [2023-08-27 07:15:59,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 217.23076923076923) internal successors, (2824), 13 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states 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 07:15:59,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:15:59,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:15:59,826 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 07:16:00,025 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,SelfDestructingSolverStorable11 [2023-08-27 07:16:00,026 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:16:00,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:16:00,027 INFO L85 PathProgramCache]: Analyzing trace with hash -734520389, now seen corresponding path program 1 times [2023-08-27 07:16:00,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:16:00,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757731458] [2023-08-27 07:16:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:16:00,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:16:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:16:00,072 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 07:16:00,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:16:00,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757731458] [2023-08-27 07:16:00,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757731458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:16:00,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:16:00,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:16:00,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089531815] [2023-08-27 07:16:00,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:16:00,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:16:00,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:16:00,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:16:00,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:16:00,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 616 [2023-08-27 07:16:00,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 128 transitions, 826 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states 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 07:16:00,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:16:00,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 616 [2023-08-27 07:16:00,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:16:42,221 INFO L124 PetriNetUnfolderBase]: 294318/396886 cut-off events. [2023-08-27 07:16:42,221 INFO L125 PetriNetUnfolderBase]: For 340301/345107 co-relation queries the response was YES. [2023-08-27 07:16:44,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034130 conditions, 396886 events. 294318/396886 cut-off events. For 340301/345107 co-relation queries the response was YES. Maximal size of possible extension queue 16125. Compared 3009766 event pairs, 107459 based on Foata normal form. 4794/200712 useless extension candidates. Maximal degree in co-relation 1033986. Up to 216181 conditions per place. [2023-08-27 07:16:45,558 INFO L140 encePairwiseOnDemand]: 612/616 looper letters, 177 selfloop transitions, 3 changer transitions 0/184 dead transitions. [2023-08-27 07:16:45,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 184 transitions, 1441 flow [2023-08-27 07:16:45,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:16:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:16:45,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 854 transitions. [2023-08-27 07:16:45,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2023-08-27 07:16:45,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 854 transitions. [2023-08-27 07:16:45,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 854 transitions. [2023-08-27 07:16:45,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:16:45,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 854 transitions. [2023-08-27 07:16:45,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states 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 07:16:45,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:16:45,564 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 616.0) internal successors, (2464), 4 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 07:16:45,564 INFO L175 Difference]: Start difference. First operand has 110 places, 128 transitions, 826 flow. Second operand 3 states and 854 transitions. [2023-08-27 07:16:45,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 184 transitions, 1441 flow [2023-08-27 07:16:46,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 184 transitions, 1412 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-27 07:16:46,452 INFO L231 Difference]: Finished difference. Result has 111 places, 130 transitions, 823 flow [2023-08-27 07:16:46,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=823, PETRI_PLACES=111, PETRI_TRANSITIONS=130} [2023-08-27 07:16:46,452 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 41 predicate places. [2023-08-27 07:16:46,452 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 130 transitions, 823 flow [2023-08-27 07:16:46,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states 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 07:16:46,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:16:46,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:16:46,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 07:16:46,453 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:16:46,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:16:46,453 INFO L85 PathProgramCache]: Analyzing trace with hash -734520385, now seen corresponding path program 1 times [2023-08-27 07:16:46,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:16:46,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981246680] [2023-08-27 07:16:46,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:16:46,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:16:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:16:46,649 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 07:16:46,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:16:46,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981246680] [2023-08-27 07:16:46,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981246680] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:16:46,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:16:46,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 07:16:46,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030111835] [2023-08-27 07:16:46,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:16:46,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:16:46,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:16:46,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:16:46,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:16:46,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 616 [2023-08-27 07:16:46,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 130 transitions, 823 flow. Second operand has 7 states, 7 states have (on average 188.42857142857142) internal successors, (1319), 7 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states 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 07:16:46,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:16:46,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 616 [2023-08-27 07:16:46,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:17:27,270 INFO L124 PetriNetUnfolderBase]: 293241/395539 cut-off events. [2023-08-27 07:17:27,271 INFO L125 PetriNetUnfolderBase]: For 364804/369586 co-relation queries the response was YES. [2023-08-27 07:17:29,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058587 conditions, 395539 events. 293241/395539 cut-off events. For 364804/369586 co-relation queries the response was YES. Maximal size of possible extension queue 15710. Compared 2960476 event pairs, 222026 based on Foata normal form. 4848/218187 useless extension candidates. Maximal degree in co-relation 1058441. Up to 270151 conditions per place. [2023-08-27 07:17:30,574 INFO L140 encePairwiseOnDemand]: 607/616 looper letters, 200 selfloop transitions, 26 changer transitions 0/228 dead transitions. [2023-08-27 07:17:30,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 228 transitions, 1657 flow [2023-08-27 07:17:30,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:17:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:17:30,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1263 transitions. [2023-08-27 07:17:30,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3417207792207792 [2023-08-27 07:17:30,576 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1263 transitions. [2023-08-27 07:17:30,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1263 transitions. [2023-08-27 07:17:30,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:17:30,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1263 transitions. [2023-08-27 07:17:30,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.5) internal successors, (1263), 6 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states 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 07:17:30,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 07:17:30,583 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 616.0) internal successors, (4312), 7 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states 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 07:17:30,583 INFO L175 Difference]: Start difference. First operand has 111 places, 130 transitions, 823 flow. Second operand 6 states and 1263 transitions. [2023-08-27 07:17:30,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 228 transitions, 1657 flow [2023-08-27 07:17:31,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 228 transitions, 1647 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:17:31,296 INFO L231 Difference]: Finished difference. Result has 115 places, 135 transitions, 941 flow [2023-08-27 07:17:31,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=616, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=941, PETRI_PLACES=115, PETRI_TRANSITIONS=135} [2023-08-27 07:17:31,297 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 45 predicate places. [2023-08-27 07:17:31,297 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 135 transitions, 941 flow [2023-08-27 07:17:31,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 188.42857142857142) internal successors, (1319), 7 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states 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 07:17:31,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:17:31,297 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:17:31,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 07:17:31,297 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-08-27 07:17:31,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:17:31,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2017718532, now seen corresponding path program 1 times [2023-08-27 07:17:31,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:17:31,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704729957] [2023-08-27 07:17:31,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:17:31,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:17:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:17:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:17:31,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:17:31,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704729957] [2023-08-27 07:17:31,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704729957] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:17:31,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839955132] [2023-08-27 07:17:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:17:31,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:17:31,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:17:31,355 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 07:17:31,355 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 07:17:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:17:31,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:17:31,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:17:31,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:17:31,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:17:31,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:17:31,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839955132] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:17:31,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:17:31,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 07:17:31,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905437644] [2023-08-27 07:17:31,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:17:31,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:17:31,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:17:31,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:17:31,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:17:31,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 616 [2023-08-27 07:17:31,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 135 transitions, 941 flow. Second operand has 7 states, 7 states have (on average 247.85714285714286) internal successors, (1735), 7 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states 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 07:17:31,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:17:31,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 616 [2023-08-27 07:17:31,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand