/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 PROGRAM_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/array-eq-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 12:18:05,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 12:18:05,455 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 12:18:05,465 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 12:18:05,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 12:18:05,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 12:18:05,498 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 12:18:05,498 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 12:18:05,499 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 12:18:05,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 12:18:05,503 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 12:18:05,503 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 12:18:05,503 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 12:18:05,504 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 12:18:05,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 12:18:05,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 12:18:05,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 12:18:05,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 12:18:05,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 12:18:05,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 12:18:05,506 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 12:18:05,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 12:18:05,507 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 12:18:05,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 12:18:05,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 12:18:05,508 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 12:18:05,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 12:18:05,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 12:18:05,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 12:18:05,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 12:18:05,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 12:18:05,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 12:18:05,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 12:18:05,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 12:18:05,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 12:18:05,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 12:18:05,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 12:18:05,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 12:18:05,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 12:18:05,829 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 12:18:05,829 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 12:18:05,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2023-08-27 12:18:06,988 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 12:18:07,213 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 12:18:07,213 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2023-08-27 12:18:07,221 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c5d8e2d/251840f249aa451ab8d2ecd3867a1e36/FLAG657b0d963 [2023-08-27 12:18:07,234 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c5d8e2d/251840f249aa451ab8d2ecd3867a1e36 [2023-08-27 12:18:07,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 12:18:07,237 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 12:18:07,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 12:18:07,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 12:18:07,241 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 12:18:07,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:18:07" (1/1) ... [2023-08-27 12:18:07,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d786b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:18:07, skipping insertion in model container [2023-08-27 12:18:07,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:18:07" (1/1) ... [2023-08-27 12:18:07,262 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 12:18:07,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 12:18:07,463 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 12:18:07,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 12:18:07,519 INFO L206 MainTranslator]: Completed translation [2023-08-27 12:18:07,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:18:07 WrapperNode [2023-08-27 12:18:07,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 12:18:07,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 12:18:07,521 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 12:18:07,521 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 12:18:07,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:18:07" (1/1) ... [2023-08-27 12:18:07,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:18:07" (1/1) ... [2023-08-27 12:18:07,581 INFO L138 Inliner]: procedures = 24, calls = 47, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 221 [2023-08-27 12:18:07,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 12:18:07,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 12:18:07,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 12:18:07,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 12:18:07,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:18:07" (1/1) ... [2023-08-27 12:18:07,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:18:07" (1/1) ... [2023-08-27 12:18:07,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:18:07" (1/1) ... [2023-08-27 12:18:07,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:18:07" (1/1) ... [2023-08-27 12:18:07,614 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:18:07" (1/1) ... [2023-08-27 12:18:07,628 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:18:07" (1/1) ... [2023-08-27 12:18:07,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:18:07" (1/1) ... [2023-08-27 12:18:07,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:18:07" (1/1) ... [2023-08-27 12:18:07,633 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 12:18:07,634 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 12:18:07,634 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 12:18:07,634 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 12:18:07,635 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:18:07" (1/1) ... [2023-08-27 12:18:07,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 12:18:07,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:18:07,670 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 12:18:07,692 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 12:18:07,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 12:18:07,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 12:18:07,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 12:18:07,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 12:18:07,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 12:18:07,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 12:18:07,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 12:18:07,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 12:18:07,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 12:18:07,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 12:18:07,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 12:18:07,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 12:18:07,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 12:18:07,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 12:18:07,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 12:18:07,716 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 12:18:07,838 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 12:18:07,843 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 12:18:08,274 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 12:18:08,289 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 12:18:08,290 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-27 12:18:08,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:18:08 BoogieIcfgContainer [2023-08-27 12:18:08,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 12:18:08,296 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 12:18:08,296 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 12:18:08,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 12:18:08,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:18:07" (1/3) ... [2023-08-27 12:18:08,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393f39af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:18:08, skipping insertion in model container [2023-08-27 12:18:08,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:18:07" (2/3) ... [2023-08-27 12:18:08,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393f39af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:18:08, skipping insertion in model container [2023-08-27 12:18:08,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:18:08" (3/3) ... [2023-08-27 12:18:08,301 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-08-27 12:18:08,316 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 12:18:08,316 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-27 12:18:08,317 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 12:18:08,400 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 12:18:08,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 316 transitions, 656 flow [2023-08-27 12:18:08,593 INFO L124 PetriNetUnfolderBase]: 30/313 cut-off events. [2023-08-27 12:18:08,594 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 12:18:08,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 313 events. 30/313 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 325 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 212. Up to 3 conditions per place. [2023-08-27 12:18:08,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 316 transitions, 656 flow [2023-08-27 12:18:08,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 302 transitions, 622 flow [2023-08-27 12:18:08,614 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 12:18:08,625 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 282 places, 302 transitions, 622 flow [2023-08-27 12:18:08,629 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 282 places, 302 transitions, 622 flow [2023-08-27 12:18:08,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 302 transitions, 622 flow [2023-08-27 12:18:08,685 INFO L124 PetriNetUnfolderBase]: 30/302 cut-off events. [2023-08-27 12:18:08,685 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 12:18:08,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 302 events. 30/302 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 324 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 212. Up to 3 conditions per place. [2023-08-27 12:18:08,692 INFO L119 LiptonReduction]: Number of co-enabled transitions 3840 [2023-08-27 12:18:19,620 INFO L134 LiptonReduction]: Checked pairs total: 6119 [2023-08-27 12:18:19,620 INFO L136 LiptonReduction]: Total number of compositions: 370 [2023-08-27 12:18:19,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 12:18:19,638 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;@41c20458, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 12:18:19,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-27 12:18:19,641 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 12:18:19,641 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 12:18:19,642 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:18:19,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:19,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 12:18:19,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:19,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:19,647 INFO L85 PathProgramCache]: Analyzing trace with hash 38913, now seen corresponding path program 1 times [2023-08-27 12:18:19,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:19,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885172242] [2023-08-27 12:18:19,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:19,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:19,903 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 12:18:19,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:19,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885172242] [2023-08-27 12:18:19,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885172242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:18:19,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:18:19,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:18:19,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628831418] [2023-08-27 12:18:19,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:18:19,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:18:19,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:19,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:18:19,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:18:19,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 686 [2023-08-27 12:18:19,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 0 states 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 12:18:19,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:19,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 686 [2023-08-27 12:18:19,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:20,143 INFO L124 PetriNetUnfolderBase]: 815/1138 cut-off events. [2023-08-27 12:18:20,144 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-27 12:18:20,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1138 events. 815/1138 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3736 event pairs, 527 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 2004. Up to 1134 conditions per place. [2023-08-27 12:18:20,153 INFO L140 encePairwiseOnDemand]: 673/686 looper letters, 40 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-08-27 12:18:20,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 206 flow [2023-08-27 12:18:20,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:18:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:18:20,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 863 transitions. [2023-08-27 12:18:20,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4193391642371234 [2023-08-27 12:18:20,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 863 transitions. [2023-08-27 12:18:20,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 863 transitions. [2023-08-27 12:18:20,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:20,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 863 transitions. [2023-08-27 12:18:20,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states 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 12:18:20,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 12:18:20,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 12:18:20,190 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 100 flow. Second operand 3 states and 863 transitions. [2023-08-27 12:18:20,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 206 flow [2023-08-27 12:18:20,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 194 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 12:18:20,197 INFO L231 Difference]: Finished difference. Result has 41 places, 47 transitions, 152 flow [2023-08-27 12:18:20,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=41, PETRI_TRANSITIONS=47} [2023-08-27 12:18:20,201 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2023-08-27 12:18:20,201 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 47 transitions, 152 flow [2023-08-27 12:18:20,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 0 states 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 12:18:20,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:20,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 12:18:20,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 12:18:20,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:20,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:20,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1209219, now seen corresponding path program 1 times [2023-08-27 12:18:20,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:20,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704847085] [2023-08-27 12:18:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:20,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:20,284 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 12:18:20,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:20,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704847085] [2023-08-27 12:18:20,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704847085] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:18:20,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198019590] [2023-08-27 12:18:20,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:20,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:20,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:18:20,289 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 12:18:20,361 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 12:18:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:20,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 12:18:20,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:18:20,502 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 12:18:20,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:18:20,516 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 12:18:20,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198019590] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:18:20,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:18:20,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 12:18:20,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754213789] [2023-08-27 12:18:20,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:18:20,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 12:18:20,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:20,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 12:18:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 12:18:20,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 686 [2023-08-27 12:18:20,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 47 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states 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 12:18:20,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:20,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 686 [2023-08-27 12:18:20,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:20,744 INFO L124 PetriNetUnfolderBase]: 833/1165 cut-off events. [2023-08-27 12:18:20,744 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-27 12:18:20,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 1165 events. 833/1165 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3819 event pairs, 527 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 2269. Up to 1134 conditions per place. [2023-08-27 12:18:20,751 INFO L140 encePairwiseOnDemand]: 673/686 looper letters, 37 selfloop transitions, 37 changer transitions 0/74 dead transitions. [2023-08-27 12:18:20,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 420 flow [2023-08-27 12:18:20,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 12:18:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 12:18:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1973 transitions. [2023-08-27 12:18:20,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108704706372345 [2023-08-27 12:18:20,757 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1973 transitions. [2023-08-27 12:18:20,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1973 transitions. [2023-08-27 12:18:20,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:20,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1973 transitions. [2023-08-27 12:18:20,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.85714285714283) internal successors, (1973), 7 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states 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 12:18:20,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 686.0) internal successors, (5488), 8 states have internal predecessors, (5488), 0 states have call successors, (0), 0 states 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 12:18:20,773 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 686.0) internal successors, (5488), 8 states have internal predecessors, (5488), 0 states have call successors, (0), 0 states 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 12:18:20,773 INFO L175 Difference]: Start difference. First operand has 41 places, 47 transitions, 152 flow. Second operand 7 states and 1973 transitions. [2023-08-27 12:18:20,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 420 flow [2023-08-27 12:18:20,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 74 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:18:20,776 INFO L231 Difference]: Finished difference. Result has 48 places, 74 transitions, 382 flow [2023-08-27 12:18:20,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=382, PETRI_PLACES=48, PETRI_TRANSITIONS=74} [2023-08-27 12:18:20,777 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2023-08-27 12:18:20,777 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 74 transitions, 382 flow [2023-08-27 12:18:20,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states 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 12:18:20,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:20,779 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 12:18:20,792 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 12:18:20,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:20,993 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:20,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:20,993 INFO L85 PathProgramCache]: Analyzing trace with hash 37486913, now seen corresponding path program 1 times [2023-08-27 12:18:20,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:20,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353176712] [2023-08-27 12:18:20,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:20,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:18:21,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:21,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353176712] [2023-08-27 12:18:21,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353176712] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:18:21,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302729897] [2023-08-27 12:18:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:21,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:21,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:18:21,108 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 12:18:21,135 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 12:18:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:21,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 12:18:21,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:18:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:18:21,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 12:18:21,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302729897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:18:21,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 12:18:21,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 12:18:21,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902231120] [2023-08-27 12:18:21,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:18:21,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:18:21,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:21,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:18:21,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 12:18:21,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 686 [2023-08-27 12:18:21,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 74 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 270.8) internal successors, (1354), 5 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:18:21,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:21,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 686 [2023-08-27 12:18:21,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:21,437 INFO L124 PetriNetUnfolderBase]: 824/1153 cut-off events. [2023-08-27 12:18:21,437 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-27 12:18:21,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2434 conditions, 1153 events. 824/1153 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3794 event pairs, 527 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 2340. Up to 1125 conditions per place. [2023-08-27 12:18:21,444 INFO L140 encePairwiseOnDemand]: 676/686 looper letters, 42 selfloop transitions, 20 changer transitions 0/62 dead transitions. [2023-08-27 12:18:21,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 62 transitions, 425 flow [2023-08-27 12:18:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 12:18:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 12:18:21,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1406 transitions. [2023-08-27 12:18:21,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099125364431487 [2023-08-27 12:18:21,448 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1406 transitions. [2023-08-27 12:18:21,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1406 transitions. [2023-08-27 12:18:21,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:21,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1406 transitions. [2023-08-27 12:18:21,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 281.2) internal successors, (1406), 5 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 12:18:21,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states 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 12:18:21,459 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states 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 12:18:21,459 INFO L175 Difference]: Start difference. First operand has 48 places, 74 transitions, 382 flow. Second operand 5 states and 1406 transitions. [2023-08-27 12:18:21,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 62 transitions, 425 flow [2023-08-27 12:18:21,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 388 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-27 12:18:21,463 INFO L231 Difference]: Finished difference. Result has 47 places, 62 transitions, 304 flow [2023-08-27 12:18:21,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=47, PETRI_TRANSITIONS=62} [2023-08-27 12:18:21,464 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-08-27 12:18:21,464 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 62 transitions, 304 flow [2023-08-27 12:18:21,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 270.8) internal successors, (1354), 5 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:18:21,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:21,465 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 12:18:21,471 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 12:18:21,671 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,SelfDestructingSolverStorable2 [2023-08-27 12:18:21,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:21,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:21,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1665276601, now seen corresponding path program 2 times [2023-08-27 12:18:21,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:21,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095094102] [2023-08-27 12:18:21,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:21,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:21,809 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 12:18:21,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:21,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095094102] [2023-08-27 12:18:21,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095094102] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:18:21,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557445015] [2023-08-27 12:18:21,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 12:18:21,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:21,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:18:21,813 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 12:18:21,816 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 12:18:21,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 12:18:21,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 12:18:21,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 12:18:21,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:18:21,918 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 12:18:21,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 12:18:21,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557445015] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:18:21,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 12:18:21,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 12:18:21,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496480721] [2023-08-27 12:18:21,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:18:21,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:18:21,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:21,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:18:21,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 12:18:21,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 686 [2023-08-27 12:18:21,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 62 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 12:18:21,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:21,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 686 [2023-08-27 12:18:21,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:22,057 INFO L124 PetriNetUnfolderBase]: 824/1152 cut-off events. [2023-08-27 12:18:22,058 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-27 12:18:22,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2428 conditions, 1152 events. 824/1152 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3800 event pairs, 527 based on Foata normal form. 1/527 useless extension candidates. Maximal degree in co-relation 2344. Up to 1147 conditions per place. [2023-08-27 12:18:22,064 INFO L140 encePairwiseOnDemand]: 683/686 looper letters, 55 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-08-27 12:18:22,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 416 flow [2023-08-27 12:18:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:18:22,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:18:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 857 transitions. [2023-08-27 12:18:22,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4164237123420797 [2023-08-27 12:18:22,068 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 857 transitions. [2023-08-27 12:18:22,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 857 transitions. [2023-08-27 12:18:22,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:22,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 857 transitions. [2023-08-27 12:18:22,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states 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 12:18:22,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 12:18:22,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 12:18:22,083 INFO L175 Difference]: Start difference. First operand has 47 places, 62 transitions, 304 flow. Second operand 3 states and 857 transitions. [2023-08-27 12:18:22,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 416 flow [2023-08-27 12:18:22,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 61 transitions, 388 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 12:18:22,088 INFO L231 Difference]: Finished difference. Result has 45 places, 61 transitions, 278 flow [2023-08-27 12:18:22,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=45, PETRI_TRANSITIONS=61} [2023-08-27 12:18:22,090 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-27 12:18:22,090 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 61 transitions, 278 flow [2023-08-27 12:18:22,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 12:18:22,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:22,091 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 12:18:22,096 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 12:18:22,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:22,297 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:22,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:22,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1201459392, now seen corresponding path program 1 times [2023-08-27 12:18:22,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:22,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229711744] [2023-08-27 12:18:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:22,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:22,408 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 12:18:22,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:22,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229711744] [2023-08-27 12:18:22,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229711744] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:18:22,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467228600] [2023-08-27 12:18:22,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:22,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:22,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:18:22,410 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 12:18:22,413 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 12:18:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:22,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 12:18:22,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:18:22,523 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 12:18:22,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:18:22,574 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 12:18:22,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467228600] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:18:22,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:18:22,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 12:18:22,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659935201] [2023-08-27 12:18:22,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:18:22,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 12:18:22,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:22,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 12:18:22,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 12:18:22,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 686 [2023-08-27 12:18:22,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 61 transitions, 278 flow. Second operand has 13 states, 13 states have (on average 271.15384615384613) internal successors, (3525), 13 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states 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 12:18:22,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:22,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 686 [2023-08-27 12:18:22,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:22,815 INFO L124 PetriNetUnfolderBase]: 842/1188 cut-off events. [2023-08-27 12:18:22,816 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-08-27 12:18:22,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 1188 events. 842/1188 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4010 event pairs, 527 based on Foata normal form. 12/574 useless extension candidates. Maximal degree in co-relation 2451. Up to 1139 conditions per place. [2023-08-27 12:18:22,844 INFO L140 encePairwiseOnDemand]: 677/686 looper letters, 36 selfloop transitions, 61 changer transitions 0/97 dead transitions. [2023-08-27 12:18:22,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 97 transitions, 706 flow [2023-08-27 12:18:22,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 12:18:22,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 12:18:22,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3349 transitions. [2023-08-27 12:18:22,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068270165208941 [2023-08-27 12:18:22,854 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3349 transitions. [2023-08-27 12:18:22,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3349 transitions. [2023-08-27 12:18:22,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:22,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3349 transitions. [2023-08-27 12:18:22,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 279.0833333333333) internal successors, (3349), 12 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states 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 12:18:22,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 686.0) internal successors, (8918), 13 states have internal predecessors, (8918), 0 states have call successors, (0), 0 states 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 12:18:22,876 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 686.0) internal successors, (8918), 13 states have internal predecessors, (8918), 0 states have call successors, (0), 0 states 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 12:18:22,876 INFO L175 Difference]: Start difference. First operand has 45 places, 61 transitions, 278 flow. Second operand 12 states and 3349 transitions. [2023-08-27 12:18:22,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 97 transitions, 706 flow [2023-08-27 12:18:22,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 97 transitions, 682 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:18:22,880 INFO L231 Difference]: Finished difference. Result has 60 places, 97 transitions, 696 flow [2023-08-27 12:18:22,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=696, PETRI_PLACES=60, PETRI_TRANSITIONS=97} [2023-08-27 12:18:22,881 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2023-08-27 12:18:22,881 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 97 transitions, 696 flow [2023-08-27 12:18:22,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 271.15384615384613) internal successors, (3525), 13 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states 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 12:18:22,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:22,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:22,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 12:18:23,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:23,089 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:23,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:23,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1205539790, now seen corresponding path program 1 times [2023-08-27 12:18:23,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:23,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323233834] [2023-08-27 12:18:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:23,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:23,147 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 12:18:23,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:23,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323233834] [2023-08-27 12:18:23,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323233834] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:18:23,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:18:23,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:18:23,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284468217] [2023-08-27 12:18:23,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:18:23,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:18:23,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:23,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:18:23,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:18:23,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 686 [2023-08-27 12:18:23,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 97 transitions, 696 flow. Second operand has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 12:18:23,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:23,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 686 [2023-08-27 12:18:23,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:23,360 INFO L124 PetriNetUnfolderBase]: 1386/1938 cut-off events. [2023-08-27 12:18:23,360 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-08-27 12:18:23,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4180 conditions, 1938 events. 1386/1938 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7630 event pairs, 323 based on Foata normal form. 0/930 useless extension candidates. Maximal degree in co-relation 4062. Up to 1171 conditions per place. [2023-08-27 12:18:23,372 INFO L140 encePairwiseOnDemand]: 682/686 looper letters, 120 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2023-08-27 12:18:23,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 122 transitions, 995 flow [2023-08-27 12:18:23,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:18:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:18:23,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 913 transitions. [2023-08-27 12:18:23,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44363459669582117 [2023-08-27 12:18:23,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 913 transitions. [2023-08-27 12:18:23,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 913 transitions. [2023-08-27 12:18:23,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:23,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 913 transitions. [2023-08-27 12:18:23,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states 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 12:18:23,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 12:18:23,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 12:18:23,380 INFO L175 Difference]: Start difference. First operand has 60 places, 97 transitions, 696 flow. Second operand 3 states and 913 transitions. [2023-08-27 12:18:23,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 122 transitions, 995 flow [2023-08-27 12:18:23,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 122 transitions, 817 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-08-27 12:18:23,385 INFO L231 Difference]: Finished difference. Result has 58 places, 98 transitions, 532 flow [2023-08-27 12:18:23,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=532, PETRI_PLACES=58, PETRI_TRANSITIONS=98} [2023-08-27 12:18:23,386 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2023-08-27 12:18:23,386 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 98 transitions, 532 flow [2023-08-27 12:18:23,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states 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 12:18:23,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:23,387 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:23,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 12:18:23,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:23,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1117316166, now seen corresponding path program 1 times [2023-08-27 12:18:23,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:23,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048312178] [2023-08-27 12:18:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:23,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:18:23,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:23,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048312178] [2023-08-27 12:18:23,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048312178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:18:23,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:18:23,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 12:18:23,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223465448] [2023-08-27 12:18:23,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:18:23,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:18:23,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:23,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:18:23,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:18:23,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 686 [2023-08-27 12:18:23,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 98 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states 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 12:18:23,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:23,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 686 [2023-08-27 12:18:23,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:23,591 INFO L124 PetriNetUnfolderBase]: 1254/1754 cut-off events. [2023-08-27 12:18:23,591 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2023-08-27 12:18:23,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 1754 events. 1254/1754 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6261 event pairs, 799 based on Foata normal form. 0/972 useless extension candidates. Maximal degree in co-relation 3830. Up to 1754 conditions per place. [2023-08-27 12:18:23,602 INFO L140 encePairwiseOnDemand]: 684/686 looper letters, 96 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-08-27 12:18:23,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 97 transitions, 722 flow [2023-08-27 12:18:23,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:18:23,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:18:23,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 886 transitions. [2023-08-27 12:18:23,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305150631681244 [2023-08-27 12:18:23,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 886 transitions. [2023-08-27 12:18:23,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 886 transitions. [2023-08-27 12:18:23,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:23,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 886 transitions. [2023-08-27 12:18:23,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 12:18:23,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 12:18:23,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 12:18:23,611 INFO L175 Difference]: Start difference. First operand has 58 places, 98 transitions, 532 flow. Second operand 3 states and 886 transitions. [2023-08-27 12:18:23,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 97 transitions, 722 flow [2023-08-27 12:18:23,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 97 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:18:23,615 INFO L231 Difference]: Finished difference. Result has 58 places, 97 transitions, 528 flow [2023-08-27 12:18:23,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=528, PETRI_PLACES=58, PETRI_TRANSITIONS=97} [2023-08-27 12:18:23,616 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2023-08-27 12:18:23,616 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 97 transitions, 528 flow [2023-08-27 12:18:23,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states 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 12:18:23,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:23,617 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:23,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 12:18:23,617 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:23,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:23,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1117316132, now seen corresponding path program 1 times [2023-08-27 12:18:23,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:23,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086715683] [2023-08-27 12:18:23,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:23,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:18:23,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:23,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086715683] [2023-08-27 12:18:23,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086715683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:18:23,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:18:23,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 12:18:23,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296129092] [2023-08-27 12:18:23,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:18:23,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 12:18:23,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:23,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 12:18:23,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 12:18:23,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-27 12:18:23,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 97 transitions, 528 flow. Second operand has 4 states, 4 states have (on average 243.25) internal successors, (973), 4 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:18:23,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:23,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-27 12:18:23,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:23,981 INFO L124 PetriNetUnfolderBase]: 1584/2263 cut-off events. [2023-08-27 12:18:23,982 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2023-08-27 12:18:23,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5015 conditions, 2263 events. 1584/2263 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8780 event pairs, 1020 based on Foata normal form. 0/1273 useless extension candidates. Maximal degree in co-relation 4995. Up to 1753 conditions per place. [2023-08-27 12:18:23,996 INFO L140 encePairwiseOnDemand]: 682/686 looper letters, 163 selfloop transitions, 3 changer transitions 0/166 dead transitions. [2023-08-27 12:18:23,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 166 transitions, 1225 flow [2023-08-27 12:18:23,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 12:18:23,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 12:18:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1032 transitions. [2023-08-27 12:18:24,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3760932944606414 [2023-08-27 12:18:24,000 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1032 transitions. [2023-08-27 12:18:24,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1032 transitions. [2023-08-27 12:18:24,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:24,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1032 transitions. [2023-08-27 12:18:24,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 12:18:24,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states 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 12:18:24,007 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states 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 12:18:24,007 INFO L175 Difference]: Start difference. First operand has 58 places, 97 transitions, 528 flow. Second operand 4 states and 1032 transitions. [2023-08-27 12:18:24,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 166 transitions, 1225 flow [2023-08-27 12:18:24,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 166 transitions, 1224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:18:24,013 INFO L231 Difference]: Finished difference. Result has 61 places, 97 transitions, 536 flow [2023-08-27 12:18:24,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=536, PETRI_PLACES=61, PETRI_TRANSITIONS=97} [2023-08-27 12:18:24,014 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-08-27 12:18:24,014 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 97 transitions, 536 flow [2023-08-27 12:18:24,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.25) internal successors, (973), 4 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:18:24,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:24,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:24,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 12:18:24,016 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:24,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1112560091, now seen corresponding path program 1 times [2023-08-27 12:18:24,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:24,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298037055] [2023-08-27 12:18:24,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:24,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:24,054 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 12:18:24,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:24,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298037055] [2023-08-27 12:18:24,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298037055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:18:24,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:18:24,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:18:24,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56994160] [2023-08-27 12:18:24,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:18:24,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:18:24,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:24,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:18:24,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:18:24,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 686 [2023-08-27 12:18:24,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 97 transitions, 536 flow. Second operand has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states 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 12:18:24,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:24,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 686 [2023-08-27 12:18:24,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:24,404 INFO L124 PetriNetUnfolderBase]: 2544/3595 cut-off events. [2023-08-27 12:18:24,404 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2023-08-27 12:18:24,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7964 conditions, 3595 events. 2544/3595 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15363 event pairs, 580 based on Foata normal form. 0/2217 useless extension candidates. Maximal degree in co-relation 7942. Up to 2223 conditions per place. [2023-08-27 12:18:24,425 INFO L140 encePairwiseOnDemand]: 682/686 looper letters, 118 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2023-08-27 12:18:24,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 120 transitions, 834 flow [2023-08-27 12:18:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:18:24,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:18:24,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 909 transitions. [2023-08-27 12:18:24,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44169096209912534 [2023-08-27 12:18:24,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 909 transitions. [2023-08-27 12:18:24,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 909 transitions. [2023-08-27 12:18:24,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:24,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 909 transitions. [2023-08-27 12:18:24,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:18:24,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 12:18:24,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 12:18:24,434 INFO L175 Difference]: Start difference. First operand has 61 places, 97 transitions, 536 flow. Second operand 3 states and 909 transitions. [2023-08-27 12:18:24,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 120 transitions, 834 flow [2023-08-27 12:18:24,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 120 transitions, 828 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 12:18:24,439 INFO L231 Difference]: Finished difference. Result has 63 places, 98 transitions, 544 flow [2023-08-27 12:18:24,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=544, PETRI_PLACES=63, PETRI_TRANSITIONS=98} [2023-08-27 12:18:24,439 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2023-08-27 12:18:24,440 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 98 transitions, 544 flow [2023-08-27 12:18:24,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states 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 12:18:24,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:24,440 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:24,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 12:18:24,440 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:24,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:24,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1622137170, now seen corresponding path program 1 times [2023-08-27 12:18:24,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:24,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899177568] [2023-08-27 12:18:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:24,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 12:18:24,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:24,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899177568] [2023-08-27 12:18:24,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899177568] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:18:24,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:18:24,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:18:24,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410294100] [2023-08-27 12:18:24,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:18:24,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:18:24,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:24,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:18:24,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:18:24,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-27 12:18:24,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 98 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states 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 12:18:24,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:24,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-27 12:18:24,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:25,159 INFO L124 PetriNetUnfolderBase]: 3578/5151 cut-off events. [2023-08-27 12:18:25,160 INFO L125 PetriNetUnfolderBase]: For 886/886 co-relation queries the response was YES. [2023-08-27 12:18:25,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12073 conditions, 5151 events. 3578/5151 cut-off events. For 886/886 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 24016 event pairs, 1652 based on Foata normal form. 82/3547 useless extension candidates. Maximal degree in co-relation 12049. Up to 1990 conditions per place. [2023-08-27 12:18:25,188 INFO L140 encePairwiseOnDemand]: 680/686 looper letters, 155 selfloop transitions, 15 changer transitions 0/170 dead transitions. [2023-08-27 12:18:25,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 170 transitions, 1166 flow [2023-08-27 12:18:25,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 12:18:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 12:18:25,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1295 transitions. [2023-08-27 12:18:25,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37755102040816324 [2023-08-27 12:18:25,192 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1295 transitions. [2023-08-27 12:18:25,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1295 transitions. [2023-08-27 12:18:25,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:25,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1295 transitions. [2023-08-27 12:18:25,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states 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 12:18:25,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states 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 12:18:25,199 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states 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 12:18:25,199 INFO L175 Difference]: Start difference. First operand has 63 places, 98 transitions, 544 flow. Second operand 5 states and 1295 transitions. [2023-08-27 12:18:25,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 170 transitions, 1166 flow [2023-08-27 12:18:25,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 170 transitions, 1162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:18:25,207 INFO L231 Difference]: Finished difference. Result has 67 places, 98 transitions, 575 flow [2023-08-27 12:18:25,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=575, PETRI_PLACES=67, PETRI_TRANSITIONS=98} [2023-08-27 12:18:25,207 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2023-08-27 12:18:25,208 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 98 transitions, 575 flow [2023-08-27 12:18:25,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states 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 12:18:25,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:25,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:25,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 12:18:25,208 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:25,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash -129467822, now seen corresponding path program 1 times [2023-08-27 12:18:25,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:25,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006367638] [2023-08-27 12:18:25,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:25,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:25,248 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 12:18:25,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:25,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006367638] [2023-08-27 12:18:25,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006367638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:18:25,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:18:25,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:18:25,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651740055] [2023-08-27 12:18:25,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:18:25,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:18:25,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:25,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:18:25,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:18:25,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 686 [2023-08-27 12:18:25,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 98 transitions, 575 flow. Second operand has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states 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 12:18:25,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:25,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 686 [2023-08-27 12:18:25,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:25,895 INFO L124 PetriNetUnfolderBase]: 5090/7299 cut-off events. [2023-08-27 12:18:25,895 INFO L125 PetriNetUnfolderBase]: For 2018/2018 co-relation queries the response was YES. [2023-08-27 12:18:25,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17006 conditions, 7299 events. 5090/7299 cut-off events. For 2018/2018 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 36632 event pairs, 1240 based on Foata normal form. 0/4985 useless extension candidates. Maximal degree in co-relation 16980. Up to 4585 conditions per place. [2023-08-27 12:18:25,936 INFO L140 encePairwiseOnDemand]: 682/686 looper letters, 118 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2023-08-27 12:18:25,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 120 transitions, 882 flow [2023-08-27 12:18:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:18:25,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:18:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 907 transitions. [2023-08-27 12:18:25,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44071914480077745 [2023-08-27 12:18:25,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 907 transitions. [2023-08-27 12:18:25,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 907 transitions. [2023-08-27 12:18:25,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:25,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 907 transitions. [2023-08-27 12:18:25,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:18:25,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 12:18:25,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 12:18:25,945 INFO L175 Difference]: Start difference. First operand has 67 places, 98 transitions, 575 flow. Second operand 3 states and 907 transitions. [2023-08-27 12:18:25,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 120 transitions, 882 flow [2023-08-27 12:18:25,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 872 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 12:18:25,952 INFO L231 Difference]: Finished difference. Result has 68 places, 99 transitions, 581 flow [2023-08-27 12:18:25,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=581, PETRI_PLACES=68, PETRI_TRANSITIONS=99} [2023-08-27 12:18:25,952 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2023-08-27 12:18:25,952 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 99 transitions, 581 flow [2023-08-27 12:18:25,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states 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 12:18:25,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:25,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:25,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 12:18:25,953 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:25,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:25,954 INFO L85 PathProgramCache]: Analyzing trace with hash 281465918, now seen corresponding path program 1 times [2023-08-27 12:18:25,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:25,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923422568] [2023-08-27 12:18:25,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:25,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:26,029 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 12:18:26,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:26,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923422568] [2023-08-27 12:18:26,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923422568] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:18:26,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:18:26,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 12:18:26,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769528792] [2023-08-27 12:18:26,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:18:26,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 12:18:26,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:26,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 12:18:26,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 12:18:26,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-27 12:18:26,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 99 transitions, 581 flow. Second operand has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 0 states have call successors, (0), 0 states 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 12:18:26,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:26,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-27 12:18:26,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:26,589 INFO L124 PetriNetUnfolderBase]: 4090/5875 cut-off events. [2023-08-27 12:18:26,589 INFO L125 PetriNetUnfolderBase]: For 2011/2011 co-relation queries the response was YES. [2023-08-27 12:18:26,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14869 conditions, 5875 events. 4090/5875 cut-off events. For 2011/2011 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 27284 event pairs, 2888 based on Foata normal form. 104/4681 useless extension candidates. Maximal degree in co-relation 14842. Up to 5055 conditions per place. [2023-08-27 12:18:26,627 INFO L140 encePairwiseOnDemand]: 682/686 looper letters, 163 selfloop transitions, 3 changer transitions 0/166 dead transitions. [2023-08-27 12:18:26,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 166 transitions, 1283 flow [2023-08-27 12:18:26,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 12:18:26,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 12:18:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1029 transitions. [2023-08-27 12:18:26,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2023-08-27 12:18:26,630 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1029 transitions. [2023-08-27 12:18:26,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1029 transitions. [2023-08-27 12:18:26,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:26,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1029 transitions. [2023-08-27 12:18:26,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states 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 12:18:26,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states 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 12:18:26,637 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states 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 12:18:26,637 INFO L175 Difference]: Start difference. First operand has 68 places, 99 transitions, 581 flow. Second operand 4 states and 1029 transitions. [2023-08-27 12:18:26,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 166 transitions, 1283 flow [2023-08-27 12:18:26,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 166 transitions, 1281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:18:26,645 INFO L231 Difference]: Finished difference. Result has 71 places, 99 transitions, 588 flow [2023-08-27 12:18:26,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=588, PETRI_PLACES=71, PETRI_TRANSITIONS=99} [2023-08-27 12:18:26,646 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2023-08-27 12:18:26,646 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 99 transitions, 588 flow [2023-08-27 12:18:26,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 0 states have call successors, (0), 0 states 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 12:18:26,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:26,647 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:26,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 12:18:26,647 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:26,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:26,647 INFO L85 PathProgramCache]: Analyzing trace with hash 276641296, now seen corresponding path program 1 times [2023-08-27 12:18:26,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:26,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740272755] [2023-08-27 12:18:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:26,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:18:26,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:26,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740272755] [2023-08-27 12:18:26,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740272755] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:18:26,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:18:26,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:18:26,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915841813] [2023-08-27 12:18:26,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:18:26,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:18:26,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:26,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:18:26,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:18:26,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-27 12:18:26,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 99 transitions, 588 flow. Second operand has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states 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 12:18:26,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:26,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-27 12:18:26,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:27,192 INFO L124 PetriNetUnfolderBase]: 3296/4723 cut-off events. [2023-08-27 12:18:27,193 INFO L125 PetriNetUnfolderBase]: For 1975/1975 co-relation queries the response was YES. [2023-08-27 12:18:27,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12131 conditions, 4723 events. 3296/4723 cut-off events. For 1975/1975 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 21638 event pairs, 888 based on Foata normal form. 0/3725 useless extension candidates. Maximal degree in co-relation 12102. Up to 2721 conditions per place. [2023-08-27 12:18:27,222 INFO L140 encePairwiseOnDemand]: 680/686 looper letters, 149 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2023-08-27 12:18:27,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 164 transitions, 1193 flow [2023-08-27 12:18:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 12:18:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 12:18:27,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1287 transitions. [2023-08-27 12:18:27,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3752186588921283 [2023-08-27 12:18:27,227 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1287 transitions. [2023-08-27 12:18:27,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1287 transitions. [2023-08-27 12:18:27,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:27,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1287 transitions. [2023-08-27 12:18:27,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 257.4) internal successors, (1287), 5 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states 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 12:18:27,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states 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 12:18:27,234 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states 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 12:18:27,234 INFO L175 Difference]: Start difference. First operand has 71 places, 99 transitions, 588 flow. Second operand 5 states and 1287 transitions. [2023-08-27 12:18:27,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 164 transitions, 1193 flow [2023-08-27 12:18:27,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 164 transitions, 1188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:18:27,242 INFO L231 Difference]: Finished difference. Result has 74 places, 99 transitions, 616 flow [2023-08-27 12:18:27,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=616, PETRI_PLACES=74, PETRI_TRANSITIONS=99} [2023-08-27 12:18:27,242 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2023-08-27 12:18:27,243 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 99 transitions, 616 flow [2023-08-27 12:18:27,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states 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 12:18:27,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:27,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:27,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 12:18:27,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:27,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:27,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1367280297, now seen corresponding path program 1 times [2023-08-27 12:18:27,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:27,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275597492] [2023-08-27 12:18:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:27,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:18:27,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:27,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275597492] [2023-08-27 12:18:27,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275597492] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:18:27,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021955164] [2023-08-27 12:18:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:27,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:27,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:18:27,361 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 12:18:27,387 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 12:18:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:27,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 12:18:27,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:18:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:18:27,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:18:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:18:27,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021955164] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:18:27,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:18:27,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-08-27 12:18:27,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494489892] [2023-08-27 12:18:27,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:18:27,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 12:18:27,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:27,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 12:18:27,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-27 12:18:27,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 686 [2023-08-27 12:18:27,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 99 transitions, 616 flow. Second operand has 15 states, 15 states have (on average 236.93333333333334) internal successors, (3554), 15 states have internal predecessors, (3554), 0 states have call successors, (0), 0 states 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 12:18:27,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:27,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 686 [2023-08-27 12:18:27,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:29,478 INFO L124 PetriNetUnfolderBase]: 9682/13902 cut-off events. [2023-08-27 12:18:29,478 INFO L125 PetriNetUnfolderBase]: For 7877/7877 co-relation queries the response was YES. [2023-08-27 12:18:29,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36362 conditions, 13902 events. 9682/13902 cut-off events. For 7877/7877 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 75464 event pairs, 5452 based on Foata normal form. 358/12194 useless extension candidates. Maximal degree in co-relation 36332. Up to 3928 conditions per place. [2023-08-27 12:18:29,690 INFO L140 encePairwiseOnDemand]: 673/686 looper letters, 522 selfloop transitions, 53 changer transitions 0/575 dead transitions. [2023-08-27 12:18:29,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 575 transitions, 4070 flow [2023-08-27 12:18:29,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-27 12:18:29,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-27 12:18:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 7613 transitions. [2023-08-27 12:18:29,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35798927866077307 [2023-08-27 12:18:29,710 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 7613 transitions. [2023-08-27 12:18:29,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 7613 transitions. [2023-08-27 12:18:29,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:29,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 7613 transitions. [2023-08-27 12:18:29,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 245.58064516129033) internal successors, (7613), 31 states have internal predecessors, (7613), 0 states have call successors, (0), 0 states 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 12:18:29,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 686.0) internal successors, (21952), 32 states have internal predecessors, (21952), 0 states have call successors, (0), 0 states 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 12:18:29,758 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 686.0) internal successors, (21952), 32 states have internal predecessors, (21952), 0 states have call successors, (0), 0 states 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 12:18:29,759 INFO L175 Difference]: Start difference. First operand has 74 places, 99 transitions, 616 flow. Second operand 31 states and 7613 transitions. [2023-08-27 12:18:29,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 575 transitions, 4070 flow [2023-08-27 12:18:29,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 575 transitions, 4033 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 12:18:29,780 INFO L231 Difference]: Finished difference. Result has 116 places, 133 transitions, 1077 flow [2023-08-27 12:18:29,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1077, PETRI_PLACES=116, PETRI_TRANSITIONS=133} [2023-08-27 12:18:29,782 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2023-08-27 12:18:29,782 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 133 transitions, 1077 flow [2023-08-27 12:18:29,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 236.93333333333334) internal successors, (3554), 15 states have internal predecessors, (3554), 0 states have call successors, (0), 0 states 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 12:18:29,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:29,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:29,795 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 12:18:29,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 12:18:29,997 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:29,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:29,997 INFO L85 PathProgramCache]: Analyzing trace with hash 81136692, now seen corresponding path program 1 times [2023-08-27 12:18:29,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:29,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538069562] [2023-08-27 12:18:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:29,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:18:30,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:30,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538069562] [2023-08-27 12:18:30,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538069562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:18:30,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:18:30,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:18:30,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099015224] [2023-08-27 12:18:30,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:18:30,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:18:30,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:30,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:18:30,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:18:30,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-27 12:18:30,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 133 transitions, 1077 flow. Second operand has 5 states, 5 states have (on average 243.4) internal successors, (1217), 5 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 12:18:30,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:30,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-27 12:18:30,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:32,073 INFO L124 PetriNetUnfolderBase]: 13253/19345 cut-off events. [2023-08-27 12:18:32,073 INFO L125 PetriNetUnfolderBase]: For 27091/27091 co-relation queries the response was YES. [2023-08-27 12:18:32,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54673 conditions, 19345 events. 13253/19345 cut-off events. For 27091/27091 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 114670 event pairs, 5378 based on Foata normal form. 540/17917 useless extension candidates. Maximal degree in co-relation 54628. Up to 8161 conditions per place. [2023-08-27 12:18:32,245 INFO L140 encePairwiseOnDemand]: 681/686 looper letters, 167 selfloop transitions, 25 changer transitions 0/192 dead transitions. [2023-08-27 12:18:32,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 192 transitions, 1714 flow [2023-08-27 12:18:32,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 12:18:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 12:18:32,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1288 transitions. [2023-08-27 12:18:32,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37551020408163266 [2023-08-27 12:18:32,249 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1288 transitions. [2023-08-27 12:18:32,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1288 transitions. [2023-08-27 12:18:32,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:32,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1288 transitions. [2023-08-27 12:18:32,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 257.6) internal successors, (1288), 5 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states 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 12:18:32,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states 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 12:18:32,256 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states 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 12:18:32,256 INFO L175 Difference]: Start difference. First operand has 116 places, 133 transitions, 1077 flow. Second operand 5 states and 1288 transitions. [2023-08-27 12:18:32,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 192 transitions, 1714 flow [2023-08-27 12:18:32,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 192 transitions, 1673 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-27 12:18:32,335 INFO L231 Difference]: Finished difference. Result has 117 places, 133 transitions, 1086 flow [2023-08-27 12:18:32,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1086, PETRI_PLACES=117, PETRI_TRANSITIONS=133} [2023-08-27 12:18:32,336 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2023-08-27 12:18:32,336 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 133 transitions, 1086 flow [2023-08-27 12:18:32,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.4) internal successors, (1217), 5 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 12:18:32,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:32,337 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:32,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 12:18:32,337 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:32,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:32,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1887231699, now seen corresponding path program 1 times [2023-08-27 12:18:32,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:32,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393660757] [2023-08-27 12:18:32,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:32,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 12:18:32,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:32,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393660757] [2023-08-27 12:18:32,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393660757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:18:32,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:18:32,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:18:32,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009547623] [2023-08-27 12:18:32,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:18:32,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:18:32,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:32,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:18:32,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:18:32,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-27 12:18:32,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 133 transitions, 1086 flow. Second operand has 5 states, 5 states have (on average 243.4) internal successors, (1217), 5 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 12:18:32,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:32,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-27 12:18:32,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:33,960 INFO L124 PetriNetUnfolderBase]: 10412/15269 cut-off events. [2023-08-27 12:18:33,960 INFO L125 PetriNetUnfolderBase]: For 24017/24017 co-relation queries the response was YES. [2023-08-27 12:18:34,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44218 conditions, 15269 events. 10412/15269 cut-off events. For 24017/24017 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 88743 event pairs, 3222 based on Foata normal form. 196/13925 useless extension candidates. Maximal degree in co-relation 44173. Up to 8363 conditions per place. [2023-08-27 12:18:34,067 INFO L140 encePairwiseOnDemand]: 680/686 looper letters, 163 selfloop transitions, 25 changer transitions 0/188 dead transitions. [2023-08-27 12:18:34,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 188 transitions, 1712 flow [2023-08-27 12:18:34,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 12:18:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 12:18:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1285 transitions. [2023-08-27 12:18:34,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746355685131195 [2023-08-27 12:18:34,071 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1285 transitions. [2023-08-27 12:18:34,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1285 transitions. [2023-08-27 12:18:34,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:34,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1285 transitions. [2023-08-27 12:18:34,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 257.0) internal successors, (1285), 5 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states 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 12:18:34,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states 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 12:18:34,079 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states 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 12:18:34,079 INFO L175 Difference]: Start difference. First operand has 117 places, 133 transitions, 1086 flow. Second operand 5 states and 1285 transitions. [2023-08-27 12:18:34,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 188 transitions, 1712 flow [2023-08-27 12:18:34,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 188 transitions, 1669 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 12:18:34,156 INFO L231 Difference]: Finished difference. Result has 119 places, 133 transitions, 1101 flow [2023-08-27 12:18:34,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1101, PETRI_PLACES=119, PETRI_TRANSITIONS=133} [2023-08-27 12:18:34,157 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 76 predicate places. [2023-08-27 12:18:34,158 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 133 transitions, 1101 flow [2023-08-27 12:18:34,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.4) internal successors, (1217), 5 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 12:18:34,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:34,158 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-27 12:18:34,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 12:18:34,158 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:34,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:34,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1665015328, now seen corresponding path program 2 times [2023-08-27 12:18:34,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:34,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904105427] [2023-08-27 12:18:34,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:34,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:34,366 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:18:34,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:34,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904105427] [2023-08-27 12:18:34,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904105427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:18:34,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568650826] [2023-08-27 12:18:34,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 12:18:34,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:34,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:18:34,368 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 12:18:34,371 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 12:18:34,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 12:18:34,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 12:18:34,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 12:18:34,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:18:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 12:18:34,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 12:18:34,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568650826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:18:34,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 12:18:34,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-27 12:18:34,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277736206] [2023-08-27 12:18:34,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:18:34,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 12:18:34,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:34,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 12:18:34,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-27 12:18:34,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 686 [2023-08-27 12:18:34,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 133 transitions, 1101 flow. Second operand has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states 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 12:18:34,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:34,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 686 [2023-08-27 12:18:34,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:35,952 INFO L124 PetriNetUnfolderBase]: 10412/15266 cut-off events. [2023-08-27 12:18:35,952 INFO L125 PetriNetUnfolderBase]: For 24235/24235 co-relation queries the response was YES. [2023-08-27 12:18:36,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44949 conditions, 15266 events. 10412/15266 cut-off events. For 24235/24235 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 86856 event pairs, 7646 based on Foata normal form. 3/13729 useless extension candidates. Maximal degree in co-relation 44904. Up to 15210 conditions per place. [2023-08-27 12:18:36,053 INFO L140 encePairwiseOnDemand]: 683/686 looper letters, 114 selfloop transitions, 16 changer transitions 0/130 dead transitions. [2023-08-27 12:18:36,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 130 transitions, 1286 flow [2023-08-27 12:18:36,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 12:18:36,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 12:18:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1092 transitions. [2023-08-27 12:18:36,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3979591836734694 [2023-08-27 12:18:36,056 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1092 transitions. [2023-08-27 12:18:36,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1092 transitions. [2023-08-27 12:18:36,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:36,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1092 transitions. [2023-08-27 12:18:36,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:18:36,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states 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 12:18:36,062 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states 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 12:18:36,062 INFO L175 Difference]: Start difference. First operand has 119 places, 133 transitions, 1101 flow. Second operand 4 states and 1092 transitions. [2023-08-27 12:18:36,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 130 transitions, 1286 flow [2023-08-27 12:18:36,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 130 transitions, 1261 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:18:36,142 INFO L231 Difference]: Finished difference. Result has 119 places, 130 transitions, 1033 flow [2023-08-27 12:18:36,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1033, PETRI_PLACES=119, PETRI_TRANSITIONS=130} [2023-08-27 12:18:36,143 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 76 predicate places. [2023-08-27 12:18:36,143 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 130 transitions, 1033 flow [2023-08-27 12:18:36,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states 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 12:18:36,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:36,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:36,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 12:18:36,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 12:18:36,349 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:36,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:36,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1566254872, now seen corresponding path program 1 times [2023-08-27 12:18:36,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:36,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158745139] [2023-08-27 12:18:36,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:36,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 12:18:36,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:36,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158745139] [2023-08-27 12:18:36,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158745139] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:18:36,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347515036] [2023-08-27 12:18:36,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:36,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:36,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:18:36,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:18:36,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 12:18:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:36,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 12:18:36,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:18:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:18:36,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:18:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:18:36,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347515036] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:18:36,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:18:36,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2023-08-27 12:18:36,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909305446] [2023-08-27 12:18:36,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:18:36,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 12:18:36,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:36,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 12:18:36,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-27 12:18:36,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-27 12:18:36,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 130 transitions, 1033 flow. Second operand has 13 states, 13 states have (on average 243.69230769230768) internal successors, (3168), 13 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 12:18:36,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:36,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-27 12:18:36,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:39,147 INFO L124 PetriNetUnfolderBase]: 14230/21045 cut-off events. [2023-08-27 12:18:39,147 INFO L125 PetriNetUnfolderBase]: For 35270/35270 co-relation queries the response was YES. [2023-08-27 12:18:39,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60084 conditions, 21045 events. 14230/21045 cut-off events. For 35270/35270 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 130395 event pairs, 5405 based on Foata normal form. 736/20329 useless extension candidates. Maximal degree in co-relation 60038. Up to 6912 conditions per place. [2023-08-27 12:18:39,332 INFO L140 encePairwiseOnDemand]: 677/686 looper letters, 202 selfloop transitions, 38 changer transitions 0/240 dead transitions. [2023-08-27 12:18:39,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 240 transitions, 2004 flow [2023-08-27 12:18:39,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 12:18:39,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 12:18:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2535 transitions. [2023-08-27 12:18:39,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.369533527696793 [2023-08-27 12:18:39,337 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2535 transitions. [2023-08-27 12:18:39,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2535 transitions. [2023-08-27 12:18:39,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:39,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2535 transitions. [2023-08-27 12:18:39,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 253.5) internal successors, (2535), 10 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states 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 12:18:39,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 686.0) internal successors, (7546), 11 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states 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 12:18:39,351 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 686.0) internal successors, (7546), 11 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states 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 12:18:39,351 INFO L175 Difference]: Start difference. First operand has 119 places, 130 transitions, 1033 flow. Second operand 10 states and 2535 transitions. [2023-08-27 12:18:39,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 240 transitions, 2004 flow [2023-08-27 12:18:39,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 240 transitions, 1987 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:18:39,420 INFO L231 Difference]: Finished difference. Result has 127 places, 130 transitions, 1111 flow [2023-08-27 12:18:39,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1111, PETRI_PLACES=127, PETRI_TRANSITIONS=130} [2023-08-27 12:18:39,421 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2023-08-27 12:18:39,421 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 130 transitions, 1111 flow [2023-08-27 12:18:39,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 243.69230769230768) internal successors, (3168), 13 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 12:18:39,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:39,422 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:39,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 12:18:39,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:39,628 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:39,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:39,629 INFO L85 PathProgramCache]: Analyzing trace with hash 141413116, now seen corresponding path program 2 times [2023-08-27 12:18:39,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:39,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684781969] [2023-08-27 12:18:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:39,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 12:18:39,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:39,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684781969] [2023-08-27 12:18:39,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684781969] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:18:39,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739083665] [2023-08-27 12:18:39,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 12:18:39,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:39,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:18:39,713 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:18:39,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 12:18:39,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 12:18:39,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 12:18:39,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 12:18:39,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:18:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 12:18:39,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:18:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 12:18:39,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739083665] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:18:39,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:18:39,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-27 12:18:39,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783921605] [2023-08-27 12:18:39,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:18:39,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 12:18:39,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:39,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 12:18:39,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 12:18:39,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 686 [2023-08-27 12:18:39,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 130 transitions, 1111 flow. Second operand has 6 states, 6 states have (on average 280.6666666666667) internal successors, (1684), 6 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states 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 12:18:39,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:39,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 686 [2023-08-27 12:18:39,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:42,369 INFO L124 PetriNetUnfolderBase]: 16838/24773 cut-off events. [2023-08-27 12:18:42,369 INFO L125 PetriNetUnfolderBase]: For 53671/53671 co-relation queries the response was YES. [2023-08-27 12:18:42,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75544 conditions, 24773 events. 16838/24773 cut-off events. For 53671/53671 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 150848 event pairs, 5909 based on Foata normal form. 0/23257 useless extension candidates. Maximal degree in co-relation 75496. Up to 12367 conditions per place. [2023-08-27 12:18:42,567 INFO L140 encePairwiseOnDemand]: 682/686 looper letters, 198 selfloop transitions, 9 changer transitions 0/207 dead transitions. [2023-08-27 12:18:42,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 207 transitions, 1868 flow [2023-08-27 12:18:42,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:18:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:18:42,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1767 transitions. [2023-08-27 12:18:42,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4293002915451895 [2023-08-27 12:18:42,572 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1767 transitions. [2023-08-27 12:18:42,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1767 transitions. [2023-08-27 12:18:42,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:42,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1767 transitions. [2023-08-27 12:18:42,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.5) internal successors, (1767), 6 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states 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 12:18:42,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states 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 12:18:42,580 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states 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 12:18:42,580 INFO L175 Difference]: Start difference. First operand has 127 places, 130 transitions, 1111 flow. Second operand 6 states and 1767 transitions. [2023-08-27 12:18:42,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 207 transitions, 1868 flow [2023-08-27 12:18:42,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 207 transitions, 1790 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 12:18:42,682 INFO L231 Difference]: Finished difference. Result has 128 places, 131 transitions, 1075 flow [2023-08-27 12:18:42,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1075, PETRI_PLACES=128, PETRI_TRANSITIONS=131} [2023-08-27 12:18:42,683 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2023-08-27 12:18:42,683 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 131 transitions, 1075 flow [2023-08-27 12:18:42,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 280.6666666666667) internal successors, (1684), 6 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states 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 12:18:42,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:42,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:42,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-27 12:18:42,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:42,889 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:42,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:42,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1267145843, now seen corresponding path program 1 times [2023-08-27 12:18:42,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:42,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438992837] [2023-08-27 12:18:42,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:42,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:42,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 12:18:42,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:42,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438992837] [2023-08-27 12:18:42,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438992837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:18:42,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993055307] [2023-08-27 12:18:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:42,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:42,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:18:42,953 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:18:42,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 12:18:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:43,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 12:18:43,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:18:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:18:43,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:18:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:18:43,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993055307] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:18:43,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:18:43,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 10 [2023-08-27 12:18:43,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327843423] [2023-08-27 12:18:43,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:18:43,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 12:18:43,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:43,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 12:18:43,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-08-27 12:18:43,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-27 12:18:43,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 131 transitions, 1075 flow. Second operand has 12 states, 12 states have (on average 244.25) internal successors, (2931), 12 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states 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 12:18:43,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:43,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-27 12:18:43,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:45,313 INFO L124 PetriNetUnfolderBase]: 13472/20195 cut-off events. [2023-08-27 12:18:45,313 INFO L125 PetriNetUnfolderBase]: For 50834/50834 co-relation queries the response was YES. [2023-08-27 12:18:45,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62992 conditions, 20195 events. 13472/20195 cut-off events. For 50834/50834 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 124567 event pairs, 5475 based on Foata normal form. 622/20401 useless extension candidates. Maximal degree in co-relation 62943. Up to 6104 conditions per place. [2023-08-27 12:18:45,646 INFO L140 encePairwiseOnDemand]: 675/686 looper letters, 271 selfloop transitions, 29 changer transitions 0/300 dead transitions. [2023-08-27 12:18:45,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 300 transitions, 2714 flow [2023-08-27 12:18:45,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 12:18:45,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 12:18:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3027 transitions. [2023-08-27 12:18:45,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36771137026239065 [2023-08-27 12:18:45,650 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3027 transitions. [2023-08-27 12:18:45,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3027 transitions. [2023-08-27 12:18:45,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:45,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3027 transitions. [2023-08-27 12:18:45,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 252.25) internal successors, (3027), 12 states have internal predecessors, (3027), 0 states have call successors, (0), 0 states 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 12:18:45,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 686.0) internal successors, (8918), 13 states have internal predecessors, (8918), 0 states have call successors, (0), 0 states 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 12:18:45,664 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 686.0) internal successors, (8918), 13 states have internal predecessors, (8918), 0 states have call successors, (0), 0 states 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 12:18:45,664 INFO L175 Difference]: Start difference. First operand has 128 places, 131 transitions, 1075 flow. Second operand 12 states and 3027 transitions. [2023-08-27 12:18:45,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 300 transitions, 2714 flow [2023-08-27 12:18:45,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 300 transitions, 2659 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-27 12:18:45,751 INFO L231 Difference]: Finished difference. Result has 138 places, 142 transitions, 1324 flow [2023-08-27 12:18:45,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1324, PETRI_PLACES=138, PETRI_TRANSITIONS=142} [2023-08-27 12:18:45,752 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 95 predicate places. [2023-08-27 12:18:45,752 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 142 transitions, 1324 flow [2023-08-27 12:18:45,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 244.25) internal successors, (2931), 12 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states 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 12:18:45,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:45,753 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-08-27 12:18:45,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 12:18:45,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:45,959 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:45,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:45,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1505992103, now seen corresponding path program 1 times [2023-08-27 12:18:45,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:45,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582287837] [2023-08-27 12:18:45,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:45,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:18:46,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:46,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582287837] [2023-08-27 12:18:46,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582287837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:18:46,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671998553] [2023-08-27 12:18:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:46,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:46,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:18:46,157 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:18:46,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 12:18:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:46,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 12:18:46,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:18:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:18:46,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:18:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:18:46,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671998553] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:18:46,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:18:46,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-27 12:18:46,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297051042] [2023-08-27 12:18:46,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:18:46,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 12:18:46,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:46,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 12:18:46,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-27 12:18:46,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 686 [2023-08-27 12:18:46,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 142 transitions, 1324 flow. Second operand has 25 states, 25 states have (on average 271.12) internal successors, (6778), 25 states have internal predecessors, (6778), 0 states have call successors, (0), 0 states 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 12:18:46,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:46,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 686 [2023-08-27 12:18:46,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:48,877 INFO L124 PetriNetUnfolderBase]: 13628/20507 cut-off events. [2023-08-27 12:18:48,878 INFO L125 PetriNetUnfolderBase]: For 54560/54560 co-relation queries the response was YES. [2023-08-27 12:18:49,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64413 conditions, 20507 events. 13628/20507 cut-off events. For 54560/54560 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 126655 event pairs, 10095 based on Foata normal form. 108/20199 useless extension candidates. Maximal degree in co-relation 64361. Up to 20142 conditions per place. [2023-08-27 12:18:49,049 INFO L140 encePairwiseOnDemand]: 678/686 looper letters, 50 selfloop transitions, 176 changer transitions 0/226 dead transitions. [2023-08-27 12:18:49,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 226 transitions, 2484 flow [2023-08-27 12:18:49,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 12:18:49,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 12:18:49,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6656 transitions. [2023-08-27 12:18:49,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4042759961127308 [2023-08-27 12:18:49,056 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6656 transitions. [2023-08-27 12:18:49,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6656 transitions. [2023-08-27 12:18:49,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:49,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6656 transitions. [2023-08-27 12:18:49,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 277.3333333333333) internal successors, (6656), 24 states have internal predecessors, (6656), 0 states have call successors, (0), 0 states 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 12:18:49,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 686.0) internal successors, (17150), 25 states have internal predecessors, (17150), 0 states have call successors, (0), 0 states 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 12:18:49,078 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 686.0) internal successors, (17150), 25 states have internal predecessors, (17150), 0 states have call successors, (0), 0 states 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 12:18:49,078 INFO L175 Difference]: Start difference. First operand has 138 places, 142 transitions, 1324 flow. Second operand 24 states and 6656 transitions. [2023-08-27 12:18:49,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 226 transitions, 2484 flow [2023-08-27 12:18:49,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 226 transitions, 2446 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-08-27 12:18:49,165 INFO L231 Difference]: Finished difference. Result has 169 places, 226 transitions, 2594 flow [2023-08-27 12:18:49,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2594, PETRI_PLACES=169, PETRI_TRANSITIONS=226} [2023-08-27 12:18:49,166 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2023-08-27 12:18:49,166 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 226 transitions, 2594 flow [2023-08-27 12:18:49,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 271.12) internal successors, (6778), 25 states have internal predecessors, (6778), 0 states have call successors, (0), 0 states 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 12:18:49,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:49,167 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:49,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 12:18:49,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-27 12:18:49,373 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:49,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash 205907828, now seen corresponding path program 1 times [2023-08-27 12:18:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:49,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687677328] [2023-08-27 12:18:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:49,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 12:18:49,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:49,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687677328] [2023-08-27 12:18:49,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687677328] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:18:49,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066747846] [2023-08-27 12:18:49,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:49,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:49,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:18:49,445 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:18:49,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 12:18:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:49,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 12:18:49,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:18:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 12:18:49,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:18:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 12:18:49,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066747846] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:18:49,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:18:49,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2023-08-27 12:18:49,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604068524] [2023-08-27 12:18:49,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:18:49,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 12:18:49,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:49,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 12:18:49,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-08-27 12:18:49,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-27 12:18:49,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 226 transitions, 2594 flow. Second operand has 13 states, 13 states have (on average 243.84615384615384) internal successors, (3170), 13 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states 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 12:18:49,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:49,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-27 12:18:49,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:52,550 INFO L124 PetriNetUnfolderBase]: 14709/22112 cut-off events. [2023-08-27 12:18:52,550 INFO L125 PetriNetUnfolderBase]: For 50529/50529 co-relation queries the response was YES. [2023-08-27 12:18:52,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69492 conditions, 22112 events. 14709/22112 cut-off events. For 50529/50529 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 135709 event pairs, 5235 based on Foata normal form. 162/22020 useless extension candidates. Maximal degree in co-relation 69429. Up to 6309 conditions per place. [2023-08-27 12:18:52,932 INFO L140 encePairwiseOnDemand]: 676/686 looper letters, 380 selfloop transitions, 56 changer transitions 0/436 dead transitions. [2023-08-27 12:18:52,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 436 transitions, 5012 flow [2023-08-27 12:18:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 12:18:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 12:18:52,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3278 transitions. [2023-08-27 12:18:52,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3675712043058982 [2023-08-27 12:18:52,945 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3278 transitions. [2023-08-27 12:18:52,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3278 transitions. [2023-08-27 12:18:52,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:52,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3278 transitions. [2023-08-27 12:18:52,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 252.15384615384616) internal successors, (3278), 13 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states 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 12:18:52,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 686.0) internal successors, (9604), 14 states have internal predecessors, (9604), 0 states have call successors, (0), 0 states 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 12:18:52,956 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 686.0) internal successors, (9604), 14 states have internal predecessors, (9604), 0 states have call successors, (0), 0 states 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 12:18:52,957 INFO L175 Difference]: Start difference. First operand has 169 places, 226 transitions, 2594 flow. Second operand 13 states and 3278 transitions. [2023-08-27 12:18:52,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 436 transitions, 5012 flow [2023-08-27 12:18:53,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 436 transitions, 4276 flow, removed 200 selfloop flow, removed 11 redundant places. [2023-08-27 12:18:53,066 INFO L231 Difference]: Finished difference. Result has 172 places, 229 transitions, 2279 flow [2023-08-27 12:18:53,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2138, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2279, PETRI_PLACES=172, PETRI_TRANSITIONS=229} [2023-08-27 12:18:53,066 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 129 predicate places. [2023-08-27 12:18:53,066 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 229 transitions, 2279 flow [2023-08-27 12:18:53,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 243.84615384615384) internal successors, (3170), 13 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states 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 12:18:53,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:53,067 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:53,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 12:18:53,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 12:18:53,268 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:53,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:53,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1375293532, now seen corresponding path program 1 times [2023-08-27 12:18:53,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:53,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857828381] [2023-08-27 12:18:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:53,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 12:18:53,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:53,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857828381] [2023-08-27 12:18:53,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857828381] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:18:53,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409653458] [2023-08-27 12:18:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:53,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:53,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:18:53,376 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:18:53,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 12:18:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:53,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 12:18:53,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:18:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 12:18:53,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:18:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 12:18:53,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409653458] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:18:53,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:18:53,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 12:18:53,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634698424] [2023-08-27 12:18:53,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:18:53,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 12:18:53,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:53,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 12:18:53,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 12:18:53,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 686 [2023-08-27 12:18:53,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 229 transitions, 2279 flow. Second operand has 7 states, 7 states have (on average 288.42857142857144) internal successors, (2019), 7 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states 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 12:18:53,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:53,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 686 [2023-08-27 12:18:53,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:18:57,846 INFO L124 PetriNetUnfolderBase]: 24735/36362 cut-off events. [2023-08-27 12:18:57,846 INFO L125 PetriNetUnfolderBase]: For 98366/98366 co-relation queries the response was YES. [2023-08-27 12:18:58,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116702 conditions, 36362 events. 24735/36362 cut-off events. For 98366/98366 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 229217 event pairs, 5897 based on Foata normal form. 1248/37176 useless extension candidates. Maximal degree in co-relation 116637. Up to 12441 conditions per place. [2023-08-27 12:18:58,295 INFO L140 encePairwiseOnDemand]: 683/686 looper letters, 341 selfloop transitions, 6 changer transitions 0/347 dead transitions. [2023-08-27 12:18:58,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 347 transitions, 3636 flow [2023-08-27 12:18:58,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:18:58,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:18:58,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1805 transitions. [2023-08-27 12:18:58,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43853255587949463 [2023-08-27 12:18:58,298 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1805 transitions. [2023-08-27 12:18:58,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1805 transitions. [2023-08-27 12:18:58,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:18:58,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1805 transitions. [2023-08-27 12:18:58,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 300.8333333333333) internal successors, (1805), 6 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states 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 12:18:58,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states 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 12:18:58,303 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states 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 12:18:58,304 INFO L175 Difference]: Start difference. First operand has 172 places, 229 transitions, 2279 flow. Second operand 6 states and 1805 transitions. [2023-08-27 12:18:58,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 347 transitions, 3636 flow [2023-08-27 12:18:58,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 347 transitions, 3522 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-27 12:18:58,499 INFO L231 Difference]: Finished difference. Result has 174 places, 232 transitions, 2234 flow [2023-08-27 12:18:58,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2189, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2234, PETRI_PLACES=174, PETRI_TRANSITIONS=232} [2023-08-27 12:18:58,499 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 131 predicate places. [2023-08-27 12:18:58,499 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 232 transitions, 2234 flow [2023-08-27 12:18:58,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 288.42857142857144) internal successors, (2019), 7 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states 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 12:18:58,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:18:58,500 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:18:58,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 12:18:58,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-27 12:18:58,701 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:18:58,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:18:58,701 INFO L85 PathProgramCache]: Analyzing trace with hash -726356740, now seen corresponding path program 2 times [2023-08-27 12:18:58,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:18:58,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429025904] [2023-08-27 12:18:58,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:18:58,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:18:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:18:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 12:18:58,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:18:58,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429025904] [2023-08-27 12:18:58,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429025904] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:18:58,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143040183] [2023-08-27 12:18:58,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 12:18:58,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:18:58,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:18:58,881 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:18:58,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 12:18:59,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 12:18:59,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 12:18:59,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 12:18:59,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:18:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 12:18:59,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:18:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 12:18:59,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143040183] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:18:59,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:18:59,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2023-08-27 12:18:59,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923934708] [2023-08-27 12:18:59,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:18:59,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 12:18:59,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:18:59,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 12:18:59,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-27 12:18:59,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 686 [2023-08-27 12:18:59,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 232 transitions, 2234 flow. Second operand has 11 states, 11 states have (on average 237.63636363636363) internal successors, (2614), 11 states have internal predecessors, (2614), 0 states have call successors, (0), 0 states 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 12:18:59,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:18:59,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 686 [2023-08-27 12:18:59,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:19:06,088 INFO L124 PetriNetUnfolderBase]: 37595/55461 cut-off events. [2023-08-27 12:19:06,088 INFO L125 PetriNetUnfolderBase]: For 180833/180833 co-relation queries the response was YES. [2023-08-27 12:19:06,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183195 conditions, 55461 events. 37595/55461 cut-off events. For 180833/180833 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 376144 event pairs, 13348 based on Foata normal form. 1092/56553 useless extension candidates. Maximal degree in co-relation 183127. Up to 10838 conditions per place. [2023-08-27 12:19:06,866 INFO L140 encePairwiseOnDemand]: 678/686 looper letters, 535 selfloop transitions, 49 changer transitions 0/584 dead transitions. [2023-08-27 12:19:06,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 584 transitions, 5725 flow [2023-08-27 12:19:06,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 12:19:06,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 12:19:06,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3493 transitions. [2023-08-27 12:19:06,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36370262390670555 [2023-08-27 12:19:06,870 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3493 transitions. [2023-08-27 12:19:06,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3493 transitions. [2023-08-27 12:19:06,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:19:06,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3493 transitions. [2023-08-27 12:19:06,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 249.5) internal successors, (3493), 14 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states 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 12:19:06,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 686.0) internal successors, (10290), 15 states have internal predecessors, (10290), 0 states have call successors, (0), 0 states 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 12:19:06,881 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 686.0) internal successors, (10290), 15 states have internal predecessors, (10290), 0 states have call successors, (0), 0 states 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 12:19:06,882 INFO L175 Difference]: Start difference. First operand has 174 places, 232 transitions, 2234 flow. Second operand 14 states and 3493 transitions. [2023-08-27 12:19:06,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 584 transitions, 5725 flow [2023-08-27 12:19:07,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 584 transitions, 5483 flow, removed 63 selfloop flow, removed 7 redundant places. [2023-08-27 12:19:07,264 INFO L231 Difference]: Finished difference. Result has 180 places, 234 transitions, 2310 flow [2023-08-27 12:19:07,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2172, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2310, PETRI_PLACES=180, PETRI_TRANSITIONS=234} [2023-08-27 12:19:07,265 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2023-08-27 12:19:07,265 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 234 transitions, 2310 flow [2023-08-27 12:19:07,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 237.63636363636363) internal successors, (2614), 11 states have internal predecessors, (2614), 0 states have call successors, (0), 0 states 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 12:19:07,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:19:07,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:19:07,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 12:19:07,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-27 12:19:07,469 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:19:07,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:19:07,469 INFO L85 PathProgramCache]: Analyzing trace with hash 812660271, now seen corresponding path program 1 times [2023-08-27 12:19:07,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:19:07,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203942053] [2023-08-27 12:19:07,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:19:07,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:19:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:19:07,761 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 12:19:07,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:19:07,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203942053] [2023-08-27 12:19:07,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203942053] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:19:07,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:19:07,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 12:19:07,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392245038] [2023-08-27 12:19:07,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:19:07,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 12:19:07,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:19:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 12:19:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 12:19:07,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 686 [2023-08-27 12:19:07,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 234 transitions, 2310 flow. Second operand has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 states 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 12:19:07,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:19:07,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 686 [2023-08-27 12:19:07,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:19:14,548 INFO L124 PetriNetUnfolderBase]: 37595/55440 cut-off events. [2023-08-27 12:19:14,548 INFO L125 PetriNetUnfolderBase]: For 166280/166280 co-relation queries the response was YES. [2023-08-27 12:19:15,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178994 conditions, 55440 events. 37595/55440 cut-off events. For 166280/166280 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 375141 event pairs, 29578 based on Foata normal form. 21/55461 useless extension candidates. Maximal degree in co-relation 178929. Up to 53022 conditions per place. [2023-08-27 12:19:15,319 INFO L140 encePairwiseOnDemand]: 682/686 looper letters, 270 selfloop transitions, 3 changer transitions 51/324 dead transitions. [2023-08-27 12:19:15,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 324 transitions, 3544 flow [2023-08-27 12:19:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 12:19:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 12:19:15,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 987 transitions. [2023-08-27 12:19:15,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3596938775510204 [2023-08-27 12:19:15,320 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 987 transitions. [2023-08-27 12:19:15,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 987 transitions. [2023-08-27 12:19:15,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:19:15,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 987 transitions. [2023-08-27 12:19:15,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 246.75) internal successors, (987), 4 states have internal predecessors, (987), 0 states have call successors, (0), 0 states 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 12:19:15,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states 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 12:19:15,324 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states 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 12:19:15,324 INFO L175 Difference]: Start difference. First operand has 180 places, 234 transitions, 2310 flow. Second operand 4 states and 987 transitions. [2023-08-27 12:19:15,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 324 transitions, 3544 flow [2023-08-27 12:19:15,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 324 transitions, 3461 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-27 12:19:15,503 INFO L231 Difference]: Finished difference. Result has 179 places, 230 transitions, 2198 flow [2023-08-27 12:19:15,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2198, PETRI_PLACES=179, PETRI_TRANSITIONS=230} [2023-08-27 12:19:15,503 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 136 predicate places. [2023-08-27 12:19:15,503 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 230 transitions, 2198 flow [2023-08-27 12:19:15,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 states 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 12:19:15,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:19:15,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:19:15,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 12:19:15,504 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:19:15,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:19:15,504 INFO L85 PathProgramCache]: Analyzing trace with hash -753199067, now seen corresponding path program 1 times [2023-08-27 12:19:15,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:19:15,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650142128] [2023-08-27 12:19:15,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:19:15,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:19:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:19:15,676 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 12:19:15,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:19:15,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650142128] [2023-08-27 12:19:15,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650142128] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:19:15,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574935578] [2023-08-27 12:19:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:19:15,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:19:15,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:19:15,681 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:19:15,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 12:19:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:19:15,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 12:19:15,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:19:16,104 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 12:19:16,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:19:16,320 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 12:19:16,321 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 262 [2023-08-27 12:19:22,352 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:23,018 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:25,302 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:25,534 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:26,576 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:27,148 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:27,415 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:27,527 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:27,646 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:27,741 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:19:27,818 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:27,903 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:27,985 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:28,107 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:28,194 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:19:28,268 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:28,349 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:28,754 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:28,939 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:29,118 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:29,455 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:29,780 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:29,895 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:19:29,986 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:30,090 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:30,184 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:30,762 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:30,963 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:31,081 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:19:31,180 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:31,295 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:31,401 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:32,213 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:32,334 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:32,440 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:19:32,610 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:32,760 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:33,305 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:33,920 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:34,263 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:34,397 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:34,517 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:19:34,706 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:34,874 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:35,844 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:36,936 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:37,515 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:37,908 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:39,378 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:41,475 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:45,475 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:19:46,063 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:07,596 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:07,800 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:08,039 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:08,556 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:08,804 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:09,283 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:09,490 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:09,735 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:10,354 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:10,715 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:11,034 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:11,316 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:11,698 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:12,014 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:12,903 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:13,292 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:13,655 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:13,944 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:13,981 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:14,378 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:14,415 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:15,525 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:16,761 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:18,747 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:19,950 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:20,187 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:20,571 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:20,936 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:21,263 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:21,621 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:22,018 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:25,385 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:27,012 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:27,240 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:27,548 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:27,801 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 12:20:27,977 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 12:20:28,705 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 12:20:28,706 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 118 [2023-08-27 12:20:30,422 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 12:20:30,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574935578] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 12:20:30,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 12:20:30,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 9 [2023-08-27 12:20:30,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116666457] [2023-08-27 12:20:30,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:20:30,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:20:30,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:20:30,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:20:30,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-27 12:20:30,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 686 [2023-08-27 12:20:30,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 230 transitions, 2198 flow. Second operand has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states 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 12:20:30,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:20:30,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 686 [2023-08-27 12:20:30,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:20:39,976 INFO L124 PetriNetUnfolderBase]: 46207/69672 cut-off events. [2023-08-27 12:20:39,976 INFO L125 PetriNetUnfolderBase]: For 196871/196871 co-relation queries the response was YES. [2023-08-27 12:20:40,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217080 conditions, 69672 events. 46207/69672 cut-off events. For 196871/196871 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 514115 event pairs, 18172 based on Foata normal form. 127/69799 useless extension candidates. Maximal degree in co-relation 217014. Up to 31661 conditions per place. [2023-08-27 12:20:41,312 INFO L140 encePairwiseOnDemand]: 679/686 looper letters, 288 selfloop transitions, 11 changer transitions 57/356 dead transitions. [2023-08-27 12:20:41,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 356 transitions, 3682 flow [2023-08-27 12:20:41,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 12:20:41,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 12:20:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1249 transitions. [2023-08-27 12:20:41,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3641399416909621 [2023-08-27 12:20:41,313 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1249 transitions. [2023-08-27 12:20:41,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1249 transitions. [2023-08-27 12:20:41,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:20:41,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1249 transitions. [2023-08-27 12:20:41,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.8) internal successors, (1249), 5 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states 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 12:20:41,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states 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 12:20:41,316 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states 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 12:20:41,316 INFO L175 Difference]: Start difference. First operand has 179 places, 230 transitions, 2198 flow. Second operand 5 states and 1249 transitions. [2023-08-27 12:20:41,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 356 transitions, 3682 flow [2023-08-27 12:20:41,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 356 transitions, 3677 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:20:41,540 INFO L231 Difference]: Finished difference. Result has 184 places, 225 transitions, 2194 flow [2023-08-27 12:20:41,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2194, PETRI_PLACES=184, PETRI_TRANSITIONS=225} [2023-08-27 12:20:41,541 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 141 predicate places. [2023-08-27 12:20:41,541 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 225 transitions, 2194 flow [2023-08-27 12:20:41,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states 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 12:20:41,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:20:41,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:20:41,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 12:20:41,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:20:41,742 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:20:41,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:20:41,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1281837083, now seen corresponding path program 1 times [2023-08-27 12:20:41,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:20:41,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399102626] [2023-08-27 12:20:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:20:41,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:20:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:20:41,948 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 12:20:41,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:20:41,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399102626] [2023-08-27 12:20:41,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399102626] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:20:41,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146392997] [2023-08-27 12:20:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:20:41,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:20:41,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:20:41,953 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:20:41,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 12:20:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:20:42,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 12:20:42,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:20:42,264 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 12:20:42,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:20:42,416 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 12:20:42,416 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 262 [2023-08-27 12:21:12,512 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 12:21:12,512 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 118 [2023-08-27 12:21:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:21:12,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146392997] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 12:21:12,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 12:21:12,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 14 [2023-08-27 12:21:12,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840378778] [2023-08-27 12:21:12,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:21:12,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 12:21:12,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:21:12,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 12:21:12,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-08-27 12:21:12,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 686 [2023-08-27 12:21:12,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 225 transitions, 2194 flow. Second operand has 7 states, 7 states have (on average 226.14285714285714) internal successors, (1583), 7 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states 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 12:21:12,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:21:12,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 686 [2023-08-27 12:21:12,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:21:20,908 INFO L124 PetriNetUnfolderBase]: 45115/70002 cut-off events. [2023-08-27 12:21:20,909 INFO L125 PetriNetUnfolderBase]: For 260828/260828 co-relation queries the response was YES. [2023-08-27 12:21:21,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235489 conditions, 70002 events. 45115/70002 cut-off events. For 260828/260828 co-relation queries the response was YES. Maximal size of possible extension queue 2021. Compared 546169 event pairs, 12488 based on Foata normal form. 184/70186 useless extension candidates. Maximal degree in co-relation 235420. Up to 24868 conditions per place. [2023-08-27 12:21:21,841 INFO L140 encePairwiseOnDemand]: 677/686 looper letters, 275 selfloop transitions, 48 changer transitions 48/371 dead transitions. [2023-08-27 12:21:21,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 371 transitions, 3891 flow [2023-08-27 12:21:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 12:21:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 12:21:21,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1660 transitions. [2023-08-27 12:21:21,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3456892961266139 [2023-08-27 12:21:21,843 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1660 transitions. [2023-08-27 12:21:21,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1660 transitions. [2023-08-27 12:21:21,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:21:21,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1660 transitions. [2023-08-27 12:21:21,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 237.14285714285714) internal successors, (1660), 7 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 12:21:21,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 686.0) internal successors, (5488), 8 states have internal predecessors, (5488), 0 states have call successors, (0), 0 states 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 12:21:21,847 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 686.0) internal successors, (5488), 8 states have internal predecessors, (5488), 0 states have call successors, (0), 0 states 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 12:21:21,847 INFO L175 Difference]: Start difference. First operand has 184 places, 225 transitions, 2194 flow. Second operand 7 states and 1660 transitions. [2023-08-27 12:21:21,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 371 transitions, 3891 flow [2023-08-27 12:21:22,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 371 transitions, 3813 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-08-27 12:21:22,328 INFO L231 Difference]: Finished difference. Result has 187 places, 233 transitions, 2390 flow [2023-08-27 12:21:22,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2390, PETRI_PLACES=187, PETRI_TRANSITIONS=233} [2023-08-27 12:21:22,328 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2023-08-27 12:21:22,328 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 233 transitions, 2390 flow [2023-08-27 12:21:22,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 226.14285714285714) internal successors, (1583), 7 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states 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 12:21:22,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:21:22,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:21:22,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 12:21:22,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 12:21:22,534 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:21:22,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:21:22,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2015304472, now seen corresponding path program 1 times [2023-08-27 12:21:22,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:21:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316848117] [2023-08-27 12:21:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:21:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:21:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:21:22,706 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 12:21:22,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:21:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316848117] [2023-08-27 12:21:22,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316848117] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:21:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139159729] [2023-08-27 12:21:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:21:22,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:21:22,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:21:22,709 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:21:22,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 12:21:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:21:22,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 12:21:22,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:21:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:21:23,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:21:23,146 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 12:21:23,146 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 262 [2023-08-27 12:21:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:21:29,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139159729] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:21:29,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:21:29,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12 [2023-08-27 12:21:29,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901277303] [2023-08-27 12:21:29,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:21:29,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 12:21:29,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:21:29,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 12:21:29,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-08-27 12:21:29,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 686 [2023-08-27 12:21:29,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 233 transitions, 2390 flow. Second operand has 14 states, 14 states have (on average 239.78571428571428) internal successors, (3357), 14 states have internal predecessors, (3357), 0 states have call successors, (0), 0 states 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 12:21:29,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:21:29,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 686 [2023-08-27 12:21:29,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:21:38,850 INFO L124 PetriNetUnfolderBase]: 47515/74574 cut-off events. [2023-08-27 12:21:38,850 INFO L125 PetriNetUnfolderBase]: For 282455/282455 co-relation queries the response was YES. [2023-08-27 12:21:39,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264683 conditions, 74574 events. 47515/74574 cut-off events. For 282455/282455 co-relation queries the response was YES. Maximal size of possible extension queue 2282. Compared 601376 event pairs, 13840 based on Foata normal form. 136/74710 useless extension candidates. Maximal degree in co-relation 264613. Up to 24404 conditions per place. [2023-08-27 12:21:39,835 INFO L140 encePairwiseOnDemand]: 678/686 looper letters, 216 selfloop transitions, 86 changer transitions 71/373 dead transitions. [2023-08-27 12:21:39,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 373 transitions, 4015 flow [2023-08-27 12:21:39,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 12:21:39,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 12:21:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1979 transitions. [2023-08-27 12:21:39,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606049562682216 [2023-08-27 12:21:39,837 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1979 transitions. [2023-08-27 12:21:39,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1979 transitions. [2023-08-27 12:21:39,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:21:39,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1979 transitions. [2023-08-27 12:21:39,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 247.375) internal successors, (1979), 8 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states 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 12:21:39,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 686.0) internal successors, (6174), 9 states have internal predecessors, (6174), 0 states have call successors, (0), 0 states 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 12:21:39,843 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 686.0) internal successors, (6174), 9 states have internal predecessors, (6174), 0 states have call successors, (0), 0 states 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 12:21:39,843 INFO L175 Difference]: Start difference. First operand has 187 places, 233 transitions, 2390 flow. Second operand 8 states and 1979 transitions. [2023-08-27 12:21:39,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 373 transitions, 4015 flow [2023-08-27 12:21:40,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 373 transitions, 3947 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-27 12:21:40,358 INFO L231 Difference]: Finished difference. Result has 193 places, 225 transitions, 2398 flow [2023-08-27 12:21:40,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2398, PETRI_PLACES=193, PETRI_TRANSITIONS=225} [2023-08-27 12:21:40,359 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2023-08-27 12:21:40,359 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 225 transitions, 2398 flow [2023-08-27 12:21:40,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 239.78571428571428) internal successors, (3357), 14 states have internal predecessors, (3357), 0 states have call successors, (0), 0 states 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 12:21:40,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:21:40,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:21:40,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-27 12:21:40,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 12:21:40,564 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:21:40,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:21:40,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1362381337, now seen corresponding path program 1 times [2023-08-27 12:21:40,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:21:40,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087848210] [2023-08-27 12:21:40,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:21:40,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:21:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:21:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 12:21:41,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:21:41,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087848210] [2023-08-27 12:21:41,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087848210] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:21:41,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805412147] [2023-08-27 12:21:41,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:21:41,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:21:41,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:21:41,689 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:21:41,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 12:21:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:21:41,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 12:21:41,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:21:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 12:21:42,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:21:42,422 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 12:21:42,423 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 262 [2023-08-27 12:21:43,304 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 12:21:43,305 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 118 [2023-08-27 12:21:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 12:21:43,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805412147] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 12:21:43,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 12:21:43,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 15 [2023-08-27 12:21:43,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149467546] [2023-08-27 12:21:43,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:21:43,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 12:21:43,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:21:43,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 12:21:43,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2023-08-27 12:21:43,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 686 [2023-08-27 12:21:43,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 225 transitions, 2398 flow. Second operand has 7 states, 7 states have (on average 219.42857142857142) internal successors, (1536), 7 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states 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 12:21:43,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:21:43,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 686 [2023-08-27 12:21:43,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:21:51,155 INFO L124 PetriNetUnfolderBase]: 37943/58397 cut-off events. [2023-08-27 12:21:51,156 INFO L125 PetriNetUnfolderBase]: For 229207/229207 co-relation queries the response was YES. [2023-08-27 12:21:51,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207742 conditions, 58397 events. 37943/58397 cut-off events. For 229207/229207 co-relation queries the response was YES. Maximal size of possible extension queue 1678. Compared 432370 event pairs, 17692 based on Foata normal form. 12/58409 useless extension candidates. Maximal degree in co-relation 207670. Up to 55153 conditions per place. [2023-08-27 12:21:52,051 INFO L140 encePairwiseOnDemand]: 681/686 looper letters, 238 selfloop transitions, 13 changer transitions 3/254 dead transitions. [2023-08-27 12:21:52,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 254 transitions, 3116 flow [2023-08-27 12:21:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:21:52,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:21:52,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2023-08-27 12:21:52,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3396501457725947 [2023-08-27 12:21:52,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2023-08-27 12:21:52,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2023-08-27 12:21:52,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:21:52,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2023-08-27 12:21:52,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states 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 12:21:52,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 12:21:52,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states 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 12:21:52,055 INFO L175 Difference]: Start difference. First operand has 193 places, 225 transitions, 2398 flow. Second operand 3 states and 699 transitions. [2023-08-27 12:21:52,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 254 transitions, 3116 flow [2023-08-27 12:21:52,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 254 transitions, 2990 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-08-27 12:21:52,391 INFO L231 Difference]: Finished difference. Result has 183 places, 237 transitions, 2492 flow [2023-08-27 12:21:52,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2294, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2492, PETRI_PLACES=183, PETRI_TRANSITIONS=237} [2023-08-27 12:21:52,391 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 140 predicate places. [2023-08-27 12:21:52,392 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 237 transitions, 2492 flow [2023-08-27 12:21:52,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 219.42857142857142) internal successors, (1536), 7 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states 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 12:21:52,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:21:52,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:21:52,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 12:21:52,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 12:21:52,598 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 12:21:52,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:21:52,598 INFO L85 PathProgramCache]: Analyzing trace with hash 377571798, now seen corresponding path program 1 times [2023-08-27 12:21:52,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:21:52,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068018400] [2023-08-27 12:21:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:21:52,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:21:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:21:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 12:21:54,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:21:54,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068018400] [2023-08-27 12:21:54,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068018400] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:21:54,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372628092] [2023-08-27 12:21:54,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:21:54,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:21:54,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:21:54,065 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 12:21:54,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 12:21:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:21:54,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-27 12:21:54,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:21:54,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:21:54,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:21:54,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:21:54,291 INFO L322 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-27 12:21:54,292 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-08-27 12:21:54,344 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 12:21:54,409 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 12:21:54,409 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-27 12:21:54,485 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 12:21:54,573 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-27 12:21:54,573 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 12:21:54,668 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 12:21:54,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 12:21:54,861 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 12:21:54,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:21:54,999 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 12:21:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:21:55,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:21:56,890 WARN L839 $PredicateComparison]: unable to prove that (or (< (+ c_~i_AB~0 1) c_~An~0) (let ((.cse14 (* c_~i_BC~0 4))) (let ((.cse3 (+ c_~B~0.offset (* c_~i_AB~0 4))) (.cse4 (+ .cse14 c_~B~0.offset)) (.cse6 (+ c_~C~0.offset .cse14)) (.cse7 (= c_~An~0 c_~i_AC~0))) (and (or (forall ((v_ArrVal_1285 (Array Int Int)) (~C~0.base Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1285))) (let ((.cse2 (select .cse5 c_~B~0.base))) (let ((.cse0 (select (select .cse5 ~C~0.base) .cse6)) (.cse1 (select .cse2 .cse4))) (or (< .cse0 .cse1) (< (select .cse2 .cse3) |c_thread1Thread1of1ForFork0_#t~mem1|) (= .cse0 .cse1)))))) (< c_~i_AC~0 c_~Cn~0) .cse7) (or (forall ((v_ArrVal_1285 (Array Int Int)) (~C~0.base Int)) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1285))) (let ((.cse13 (select .cse10 c_~B~0.base)) (.cse12 (select .cse10 ~C~0.base))) (let ((.cse8 (select .cse12 .cse6)) (.cse9 (select .cse13 .cse4))) (or (< .cse8 .cse9) (let ((.cse11 (* c_~i_AC~0 4))) (<= (select (select .cse10 c_~A~0.base) (+ c_~A~0.offset .cse11)) (select .cse12 (+ c_~C~0.offset .cse11)))) (< (select .cse13 .cse3) |c_thread1Thread1of1ForFork0_#t~mem1|) (= .cse8 .cse9)))))) .cse7)))) (<= c_~Cn~0 c_~i_BC~0)) is different from false [2023-08-27 12:21:57,158 WARN L839 $PredicateComparison]: unable to prove that (or (< (+ c_~i_AB~0 1) c_~An~0) (let ((.cse17 (* c_~i_BC~0 4)) (.cse18 (* c_~i_AB~0 4))) (let ((.cse6 (+ c_~B~0.offset .cse18)) (.cse8 (+ c_~A~0.offset .cse18)) (.cse9 (+ .cse17 c_~B~0.offset)) (.cse10 (+ c_~C~0.offset .cse17)) (.cse11 (= c_~An~0 c_~i_AC~0))) (and (or (forall ((v_ArrVal_1285 (Array Int Int)) (~C~0.base Int) (v_ArrVal_1284 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1284))) (let ((.cse2 (store .cse7 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1285))) (let ((.cse5 (select .cse2 c_~B~0.base)) (.cse4 (select .cse2 ~C~0.base))) (let ((.cse0 (select .cse4 .cse10)) (.cse1 (select .cse5 .cse9))) (or (< .cse0 .cse1) (let ((.cse3 (* c_~i_AC~0 4))) (<= (select (select .cse2 c_~A~0.base) (+ c_~A~0.offset .cse3)) (select .cse4 (+ c_~C~0.offset .cse3)))) (< (select .cse5 .cse6) (select (select .cse7 c_~A~0.base) .cse8)) (= .cse0 .cse1))))))) .cse11) (or (forall ((v_ArrVal_1285 (Array Int Int)) (~C~0.base Int) (v_ArrVal_1284 (Array Int Int))) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1284))) (let ((.cse16 (store .cse15 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1285))) (let ((.cse14 (select .cse16 c_~B~0.base))) (let ((.cse12 (select (select .cse16 ~C~0.base) .cse10)) (.cse13 (select .cse14 .cse9))) (or (< .cse12 .cse13) (< (select .cse14 .cse6) (select (select .cse15 c_~A~0.base) .cse8)) (= .cse12 .cse13))))))) (< c_~i_AC~0 c_~Cn~0) .cse11)))) (<= c_~Cn~0 c_~i_BC~0)) is different from false [2023-08-27 12:21:57,260 WARN L839 $PredicateComparison]: unable to prove that (or (< (+ c_~i_AB~0 1) c_~An~0) (let ((.cse17 (* c_~i_BC~0 4)) (.cse18 (* c_~i_AB~0 4))) (let ((.cse1 (+ c_~B~0.offset .cse18)) (.cse3 (+ c_~A~0.offset .cse18)) (.cse6 (+ .cse17 c_~B~0.offset)) (.cse8 (+ .cse17 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse9 (= c_~An~0 c_~i_AC~0))) (and (or (forall ((v_ArrVal_1285 (Array Int Int)) (~C~0.base Int) (v_ArrVal_1284 (Array Int Int)) (v_ArrVal_1283 (Array Int Int))) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1283) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1284))) (let ((.cse7 (store .cse2 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1285))) (let ((.cse0 (select .cse7 c_~B~0.base))) (let ((.cse4 (select (select .cse7 ~C~0.base) .cse8)) (.cse5 (select .cse0 .cse6))) (or (< (select .cse0 .cse1) (select (select .cse2 c_~A~0.base) .cse3)) (= .cse4 .cse5) (< .cse4 .cse5))))))) (< c_~i_AC~0 c_~Cn~0) .cse9) (or (forall ((v_ArrVal_1285 (Array Int Int)) (~C~0.base Int) (v_ArrVal_1284 (Array Int Int)) (v_ArrVal_1283 (Array Int Int))) (let ((.cse11 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1283) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1284))) (let ((.cse12 (store .cse11 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1285))) (let ((.cse10 (select .cse12 c_~B~0.base)) (.cse14 (select .cse12 ~C~0.base))) (let ((.cse15 (select .cse14 .cse8)) (.cse16 (select .cse10 .cse6))) (or (< (select .cse10 .cse1) (select (select .cse11 c_~A~0.base) .cse3)) (let ((.cse13 (* c_~i_AC~0 4))) (<= (select (select .cse12 c_~A~0.base) (+ c_~A~0.offset .cse13)) (select .cse14 (+ .cse13 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (= .cse15 .cse16) (< .cse15 .cse16))))))) .cse9)))) (<= c_~Cn~0 c_~i_BC~0)) is different from false [2023-08-27 12:21:58,426 INFO L322 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2023-08-27 12:21:58,426 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 309 treesize of output 151 [2023-08-27 12:21:58,432 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 12:21:58,618 INFO L322 Elim1Store]: treesize reduction 16, result has 87.9 percent of original size [2023-08-27 12:21:58,619 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 81242 treesize of output 75461 [2023-08-27 12:21:59,232 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 12:21:59,233 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4888 treesize of output 4790 [2023-08-27 12:21:59,401 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 12:21:59,402 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4776 treesize of output 4166 [2023-08-27 12:21:59,554 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 12:21:59,555 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4136 treesize of output 3814 [2023-08-27 12:21:59,715 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 12:21:59,716 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3784 treesize of output 3152 Received shutdown request... [2023-08-27 12:31:38,197 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 12:31:38,198 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (21 of 22 remaining) [2023-08-27 12:31:38,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 12:31:38,210 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 12:31:38,212 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 12:31:38,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:31:38,399 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. [2023-08-27 12:31:38,400 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-27 12:31:38,401 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-27 12:31:38,401 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-27 12:31:38,401 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-27 12:31:38,401 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-27 12:31:38,401 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-27 12:31:38,401 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-27 12:31:38,401 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-27 12:31:38,401 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-27 12:31:38,401 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-27 12:31:38,402 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-27 12:31:38,402 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2023-08-27 12:31:38,402 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2023-08-27 12:31:38,402 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 22 remaining) [2023-08-27 12:31:38,402 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 22 remaining) [2023-08-27 12:31:38,402 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-27 12:31:38,402 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-27 12:31:38,402 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-27 12:31:38,402 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-27 12:31:38,402 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-27 12:31:38,403 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-27 12:31:38,403 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:31:38,407 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 12:31:38,407 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 12:31:38,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 12:31:38 BasicIcfg [2023-08-27 12:31:38,410 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 12:31:38,410 INFO L158 Benchmark]: Toolchain (without parser) took 811172.92ms. Allocated memory was 343.9MB in the beginning and 15.3GB in the end (delta: 15.0GB). Free memory was 319.5MB in the beginning and 4.3GB in the end (delta: -4.0GB). Peak memory consumption was 13.6GB. Max. memory is 16.0GB. [2023-08-27 12:31:38,410 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 343.9MB. Free memory was 321.1MB in the beginning and 321.0MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 12:31:38,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.25ms. Allocated memory is still 343.9MB. Free memory was 319.1MB in the beginning and 307.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 12:31:38,411 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.43ms. Allocated memory is still 343.9MB. Free memory was 307.5MB in the beginning and 305.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 12:31:38,411 INFO L158 Benchmark]: Boogie Preprocessor took 50.44ms. Allocated memory is still 343.9MB. Free memory was 305.3MB in the beginning and 303.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 12:31:38,411 INFO L158 Benchmark]: RCFGBuilder took 659.09ms. Allocated memory is still 343.9MB. Free memory was 302.8MB in the beginning and 277.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-27 12:31:38,411 INFO L158 Benchmark]: TraceAbstraction took 810113.84ms. Allocated memory was 343.9MB in the beginning and 15.3GB in the end (delta: 15.0GB). Free memory was 276.6MB in the beginning and 4.3GB in the end (delta: -4.0GB). Peak memory consumption was 13.6GB. Max. memory is 16.0GB. [2023-08-27 12:31:38,412 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 343.9MB. Free memory was 321.1MB in the beginning and 321.0MB in the end (delta: 94.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 282.25ms. Allocated memory is still 343.9MB. Free memory was 319.1MB in the beginning and 307.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.43ms. Allocated memory is still 343.9MB. Free memory was 307.5MB in the beginning and 305.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 50.44ms. Allocated memory is still 343.9MB. Free memory was 305.3MB in the beginning and 303.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 659.09ms. Allocated memory is still 343.9MB. Free memory was 302.8MB in the beginning and 277.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 810113.84ms. Allocated memory was 343.9MB in the beginning and 15.3GB in the end (delta: 15.0GB). Free memory was 276.6MB in the beginning and 4.3GB in the end (delta: -4.0GB). Peak memory consumption was 13.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.0s, 282 PlacesBefore, 43 PlacesAfterwards, 302 TransitionsBefore, 41 TransitionsAfterwards, 3840 CoEnabledTransitionPairs, 8 FixpointIterations, 204 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 65 TrivialYvCompositions, 14 ConcurrentYvCompositions, 22 ChoiceCompositions, 370 TotalNumberOfCompositions, 6119 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4806, independent: 4674, independent conditional: 0, independent unconditional: 4674, dependent: 132, dependent conditional: 0, dependent unconditional: 132, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2283, independent: 2257, independent conditional: 0, independent unconditional: 2257, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4806, independent: 2417, independent conditional: 0, independent unconditional: 2417, dependent: 106, dependent conditional: 0, dependent unconditional: 106, unknown: 2283, unknown conditional: 0, unknown unconditional: 2283] , Statistics on independence cache: Total cache size (in pairs): 129, Positive cache size: 117, Positive conditional cache size: 0, Positive unconditional cache size: 117, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 61ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 344 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 810.0s, OverallIterations: 30, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 87.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3100 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3100 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 540 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4451 IncrementalHoareTripleChecker+Invalid, 4991 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 540 mSolverCounterUnsat, 0 mSDtfsCounter, 4451 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 593 GetRequests, 317 SyntacticMatches, 14 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1069 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2594occurred in iteration=21, InterpolantAutomatonStates: 217, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 118.9s InterpolantComputationTime, 585 NumberOfCodeBlocks, 557 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 734 ConstructedInterpolants, 0 QuantifiedInterpolants, 5963 SizeOfPredicates, 74 NumberOfNonLiveVariables, 3775 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 60 InterpolantComputations, 18 PerfectInterpolantSequences, 202/508 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown