/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 06:40:04,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 06:40:04,275 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 06:40:04,279 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 06:40:04,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 06:40:04,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 06:40:04,309 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 06:40:04,309 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 06:40:04,310 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 06:40:04,313 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 06:40:04,313 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 06:40:04,314 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 06:40:04,314 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 06:40:04,315 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 06:40:04,315 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 06:40:04,315 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 06:40:04,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 06:40:04,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 06:40:04,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 06:40:04,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 06:40:04,317 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 06:40:04,321 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 06:40:04,321 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 06:40:04,322 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 06:40:04,322 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 06:40:04,322 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 06:40:04,322 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 06:40:04,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:40:04,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 06:40:04,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 06:40:04,324 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 06:40:04,324 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 06:40:04,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 06:40:04,324 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 06:40:04,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 06:40:04,325 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 06:40:04,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 06:40:04,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 06:40:04,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 06:40:04,677 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 06:40:04,677 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 06:40:04,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-08-27 06:40:05,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 06:40:06,099 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 06:40:06,100 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-08-27 06:40:06,111 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd2f3854/0f4b56b94713462c99c33ec145dd9fcd/FLAG55a13294c [2023-08-27 06:40:06,126 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd2f3854/0f4b56b94713462c99c33ec145dd9fcd [2023-08-27 06:40:06,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 06:40:06,132 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 06:40:06,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 06:40:06,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 06:40:06,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 06:40:06,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:40:06" (1/1) ... [2023-08-27 06:40:06,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e702dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:40:06, skipping insertion in model container [2023-08-27 06:40:06,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:40:06" (1/1) ... [2023-08-27 06:40:06,165 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 06:40:06,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:40:06,366 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 06:40:06,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:40:06,430 INFO L206 MainTranslator]: Completed translation [2023-08-27 06:40:06,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:40:06 WrapperNode [2023-08-27 06:40:06,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 06:40:06,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 06:40:06,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 06:40:06,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 06:40:06,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:40:06" (1/1) ... [2023-08-27 06:40:06,456 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:40:06" (1/1) ... [2023-08-27 06:40:06,490 INFO L138 Inliner]: procedures = 25, calls = 42, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 219 [2023-08-27 06:40:06,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 06:40:06,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 06:40:06,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 06:40:06,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 06:40:06,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:40:06" (1/1) ... [2023-08-27 06:40:06,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:40:06" (1/1) ... [2023-08-27 06:40:06,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:40:06" (1/1) ... [2023-08-27 06:40:06,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:40:06" (1/1) ... [2023-08-27 06:40:06,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:40:06" (1/1) ... [2023-08-27 06:40:06,539 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:40:06" (1/1) ... [2023-08-27 06:40:06,541 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:40:06" (1/1) ... [2023-08-27 06:40:06,542 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:40:06" (1/1) ... [2023-08-27 06:40:06,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 06:40:06,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 06:40:06,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 06:40:06,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 06:40:06,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:40:06" (1/1) ... [2023-08-27 06:40:06,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:40:06,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:06,583 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 06:40:06,587 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 06:40:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 06:40:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-27 06:40:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 06:40:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 06:40:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 06:40:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-27 06:40:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 06:40:06,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 06:40:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 06:40:06,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 06:40:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 06:40:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 06:40:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 06:40:06,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 06:40:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 06:40:06,621 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 06:40:06,726 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 06:40:06,728 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 06:40:07,257 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 06:40:07,271 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 06:40:07,272 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-27 06:40:07,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:40:07 BoogieIcfgContainer [2023-08-27 06:40:07,275 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 06:40:07,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 06:40:07,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 06:40:07,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 06:40:07,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:40:06" (1/3) ... [2023-08-27 06:40:07,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623c4b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:40:07, skipping insertion in model container [2023-08-27 06:40:07,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:40:06" (2/3) ... [2023-08-27 06:40:07,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623c4b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:40:07, skipping insertion in model container [2023-08-27 06:40:07,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:40:07" (3/3) ... [2023-08-27 06:40:07,282 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-08-27 06:40:07,297 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 06:40:07,297 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2023-08-27 06:40:07,298 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 06:40:07,417 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 06:40:07,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 323 transitions, 662 flow [2023-08-27 06:40:07,523 INFO L124 PetriNetUnfolderBase]: 27/321 cut-off events. [2023-08-27 06:40:07,524 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 06:40:07,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 321 events. 27/321 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 469 event pairs, 0 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 229. Up to 2 conditions per place. [2023-08-27 06:40:07,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 323 transitions, 662 flow [2023-08-27 06:40:07,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 312 transitions, 636 flow [2023-08-27 06:40:07,538 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 06:40:07,548 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 312 transitions, 636 flow [2023-08-27 06:40:07,553 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 312 transitions, 636 flow [2023-08-27 06:40:07,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 312 transitions, 636 flow [2023-08-27 06:40:07,603 INFO L124 PetriNetUnfolderBase]: 27/312 cut-off events. [2023-08-27 06:40:07,603 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 06:40:07,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 312 events. 27/312 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 470 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 229. Up to 2 conditions per place. [2023-08-27 06:40:07,610 INFO L119 LiptonReduction]: Number of co-enabled transitions 2100 [2023-08-27 06:40:26,753 INFO L134 LiptonReduction]: Checked pairs total: 4141 [2023-08-27 06:40:26,753 INFO L136 LiptonReduction]: Total number of compositions: 383 [2023-08-27 06:40:26,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 06:40:26,771 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;@522c83fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 06:40:26,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-08-27 06:40:26,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 06:40:26,772 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-27 06:40:26,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 06:40:26,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:26,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-27 06:40:26,773 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:26,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:26,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1236, now seen corresponding path program 1 times [2023-08-27 06:40:26,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:26,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42790051] [2023-08-27 06:40:26,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:26,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:26,861 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 06:40:26,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:26,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42790051] [2023-08-27 06:40:26,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42790051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:26,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:26,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-27 06:40:26,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20997603] [2023-08-27 06:40:26,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:26,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 06:40:26,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:26,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 06:40:26,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 06:40:26,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 706 [2023-08-27 06:40:26,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 120 flow. Second operand has 2 states, 2 states have (on average 299.5) internal successors, (599), 2 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:26,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:26,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 706 [2023-08-27 06:40:26,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:27,071 INFO L124 PetriNetUnfolderBase]: 320/543 cut-off events. [2023-08-27 06:40:27,072 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-08-27 06:40:27,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 543 events. 320/543 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2413 event pairs, 222 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 926. Up to 528 conditions per place. [2023-08-27 06:40:27,080 INFO L140 encePairwiseOnDemand]: 700/706 looper letters, 45 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-08-27 06:40:27,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 198 flow [2023-08-27 06:40:27,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 06:40:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 06:40:27,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 649 transitions. [2023-08-27 06:40:27,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45963172804532576 [2023-08-27 06:40:27,102 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 649 transitions. [2023-08-27 06:40:27,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 649 transitions. [2023-08-27 06:40:27,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:27,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 649 transitions. [2023-08-27 06:40:27,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 324.5) internal successors, (649), 2 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:27,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 706.0) internal successors, (2118), 3 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:27,118 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 706.0) internal successors, (2118), 3 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:27,119 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 120 flow. Second operand 2 states and 649 transitions. [2023-08-27 06:40:27,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 198 flow [2023-08-27 06:40:27,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 190 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 06:40:27,124 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 100 flow [2023-08-27 06:40:27,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2023-08-27 06:40:27,129 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2023-08-27 06:40:27,129 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 100 flow [2023-08-27 06:40:27,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 299.5) internal successors, (599), 2 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:27,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:27,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 06:40:27,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 06:40:27,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:27,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:27,131 INFO L85 PathProgramCache]: Analyzing trace with hash 39521, now seen corresponding path program 1 times [2023-08-27 06:40:27,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:27,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346503003] [2023-08-27 06:40:27,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:27,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:27,148 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:27,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343456082] [2023-08-27 06:40:27,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:27,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:27,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:27,153 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 06:40:27,216 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 06:40:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:27,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 06:40:27,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:27,288 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 06:40:27,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:27,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:27,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346503003] [2023-08-27 06:40:27,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:27,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343456082] [2023-08-27 06:40:27,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343456082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:27,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:27,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:40:27,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266188667] [2023-08-27 06:40:27,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:27,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:40:27,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:40:27,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:40:27,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 706 [2023-08-27 06:40:27,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:27,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:27,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 706 [2023-08-27 06:40:27,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:27,409 INFO L124 PetriNetUnfolderBase]: 320/540 cut-off events. [2023-08-27 06:40:27,409 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 06:40:27,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 540 events. 320/540 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2384 event pairs, 222 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 1071. Up to 516 conditions per place. [2023-08-27 06:40:27,412 INFO L140 encePairwiseOnDemand]: 697/706 looper letters, 36 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2023-08-27 06:40:27,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 178 flow [2023-08-27 06:40:27,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:40:27,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:40:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 870 transitions. [2023-08-27 06:40:27,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41076487252124644 [2023-08-27 06:40:27,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 870 transitions. [2023-08-27 06:40:27,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 870 transitions. [2023-08-27 06:40:27,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:27,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 870 transitions. [2023-08-27 06:40:27,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:27,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:27,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:27,423 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 100 flow. Second operand 3 states and 870 transitions. [2023-08-27 06:40:27,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 178 flow [2023-08-27 06:40:27,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 06:40:27,425 INFO L231 Difference]: Finished difference. Result has 44 places, 45 transitions, 106 flow [2023-08-27 06:40:27,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=44, PETRI_TRANSITIONS=45} [2023-08-27 06:40:27,425 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2023-08-27 06:40:27,426 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 45 transitions, 106 flow [2023-08-27 06:40:27,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:27,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:27,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 06:40:27,436 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 06:40:27,636 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 06:40:27,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:27,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:27,637 INFO L85 PathProgramCache]: Analyzing trace with hash 39519, now seen corresponding path program 1 times [2023-08-27 06:40:27,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:27,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652163715] [2023-08-27 06:40:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:27,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:27,650 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:27,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294307273] [2023-08-27 06:40:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:27,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:27,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:27,652 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 06:40:27,661 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 06:40:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:27,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 06:40:27,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:27,721 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 06:40:27,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:27,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:27,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652163715] [2023-08-27 06:40:27,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:27,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294307273] [2023-08-27 06:40:27,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294307273] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:27,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:27,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:40:27,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658625066] [2023-08-27 06:40:27,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:27,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:40:27,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:40:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:40:27,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 706 [2023-08-27 06:40:27,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 45 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:27,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:27,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 706 [2023-08-27 06:40:27,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:27,845 INFO L124 PetriNetUnfolderBase]: 325/548 cut-off events. [2023-08-27 06:40:27,845 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 06:40:27,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 548 events. 325/548 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2426 event pairs, 222 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 1097. Up to 529 conditions per place. [2023-08-27 06:40:27,848 INFO L140 encePairwiseOnDemand]: 693/706 looper letters, 40 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2023-08-27 06:40:27,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 230 flow [2023-08-27 06:40:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:40:27,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:40:27,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 878 transitions. [2023-08-27 06:40:27,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4145420207743154 [2023-08-27 06:40:27,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 878 transitions. [2023-08-27 06:40:27,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 878 transitions. [2023-08-27 06:40:27,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:27,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 878 transitions. [2023-08-27 06:40:27,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:27,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:27,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:27,858 INFO L175 Difference]: Start difference. First operand has 44 places, 45 transitions, 106 flow. Second operand 3 states and 878 transitions. [2023-08-27 06:40:27,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 230 flow [2023-08-27 06:40:27,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:27,860 INFO L231 Difference]: Finished difference. Result has 46 places, 53 transitions, 172 flow [2023-08-27 06:40:27,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=46, PETRI_TRANSITIONS=53} [2023-08-27 06:40:27,861 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2023-08-27 06:40:27,861 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 53 transitions, 172 flow [2023-08-27 06:40:27,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:27,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:27,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:40:27,871 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 06:40:28,067 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 06:40:28,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:28,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1227098, now seen corresponding path program 1 times [2023-08-27 06:40:28,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:28,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209074488] [2023-08-27 06:40:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:28,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:28,078 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:28,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877342390] [2023-08-27 06:40:28,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:28,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:28,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:28,080 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 06:40:28,087 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 06:40:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:28,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:40:28,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:28,182 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 06:40:28,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:28,196 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 06:40:28,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:28,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209074488] [2023-08-27 06:40:28,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:28,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877342390] [2023-08-27 06:40:28,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877342390] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:28,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:40:28,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-27 06:40:28,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815193908] [2023-08-27 06:40:28,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:28,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:40:28,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:28,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:40:28,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:40:28,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 706 [2023-08-27 06:40:28,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 53 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:28,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:28,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 706 [2023-08-27 06:40:28,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:28,389 INFO L124 PetriNetUnfolderBase]: 340/572 cut-off events. [2023-08-27 06:40:28,389 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 06:40:28,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 572 events. 340/572 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2520 event pairs, 222 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 1193. Up to 541 conditions per place. [2023-08-27 06:40:28,392 INFO L140 encePairwiseOnDemand]: 693/706 looper letters, 40 selfloop transitions, 34 changer transitions 0/77 dead transitions. [2023-08-27 06:40:28,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 422 flow [2023-08-27 06:40:28,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:40:28,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:40:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1733 transitions. [2023-08-27 06:40:28,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4091123701605288 [2023-08-27 06:40:28,398 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1733 transitions. [2023-08-27 06:40:28,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1733 transitions. [2023-08-27 06:40:28,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:28,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1733 transitions. [2023-08-27 06:40:28,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 288.8333333333333) internal successors, (1733), 6 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:28,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:28,410 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:28,410 INFO L175 Difference]: Start difference. First operand has 46 places, 53 transitions, 172 flow. Second operand 6 states and 1733 transitions. [2023-08-27 06:40:28,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 422 flow [2023-08-27 06:40:28,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 77 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:28,413 INFO L231 Difference]: Finished difference. Result has 52 places, 77 transitions, 381 flow [2023-08-27 06:40:28,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=381, PETRI_PLACES=52, PETRI_TRANSITIONS=77} [2023-08-27 06:40:28,414 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-08-27 06:40:28,414 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 77 transitions, 381 flow [2023-08-27 06:40:28,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:28,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:28,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 06:40:28,424 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 06:40:28,620 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 06:40:28,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:28,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:28,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1180228036, now seen corresponding path program 1 times [2023-08-27 06:40:28,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:28,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448489873] [2023-08-27 06:40:28,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:28,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:28,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:28,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22808140] [2023-08-27 06:40:28,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:28,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:28,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:28,639 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 06:40:28,642 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 06:40:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:28,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 06:40:28,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:28,740 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 06:40:28,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:28,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:28,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448489873] [2023-08-27 06:40:28,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:28,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22808140] [2023-08-27 06:40:28,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22808140] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:28,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:28,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:40:28,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112741894] [2023-08-27 06:40:28,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:28,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:40:28,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:28,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:40:28,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:40:28,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 706 [2023-08-27 06:40:28,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 77 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:28,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:28,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 706 [2023-08-27 06:40:28,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:28,891 INFO L124 PetriNetUnfolderBase]: 351/590 cut-off events. [2023-08-27 06:40:28,891 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-27 06:40:28,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1343 conditions, 590 events. 351/590 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2580 event pairs, 222 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 1335. Up to 553 conditions per place. [2023-08-27 06:40:28,895 INFO L140 encePairwiseOnDemand]: 701/706 looper letters, 76 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2023-08-27 06:40:28,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 95 transitions, 685 flow [2023-08-27 06:40:28,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:40:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:40:28,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 922 transitions. [2023-08-27 06:40:28,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43531633616619453 [2023-08-27 06:40:28,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 922 transitions. [2023-08-27 06:40:28,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 922 transitions. [2023-08-27 06:40:28,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:28,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 922 transitions. [2023-08-27 06:40:28,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:28,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:28,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:28,905 INFO L175 Difference]: Start difference. First operand has 52 places, 77 transitions, 381 flow. Second operand 3 states and 922 transitions. [2023-08-27 06:40:28,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 95 transitions, 685 flow [2023-08-27 06:40:28,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 95 transitions, 608 flow, removed 30 selfloop flow, removed 1 redundant places. [2023-08-27 06:40:28,913 INFO L231 Difference]: Finished difference. Result has 55 places, 88 transitions, 476 flow [2023-08-27 06:40:28,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=55, PETRI_TRANSITIONS=88} [2023-08-27 06:40:28,915 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2023-08-27 06:40:28,915 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 88 transitions, 476 flow [2023-08-27 06:40:28,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:28,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:28,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 06:40:28,925 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 06:40:29,121 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 06:40:29,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:29,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:29,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1180228035, now seen corresponding path program 1 times [2023-08-27 06:40:29,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:29,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44569969] [2023-08-27 06:40:29,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:29,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:29,131 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:29,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [474792887] [2023-08-27 06:40:29,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:29,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:29,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:29,145 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 06:40:29,150 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 06:40:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:29,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 06:40:29,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:29,243 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 06:40:29,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:29,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:29,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44569969] [2023-08-27 06:40:29,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:29,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474792887] [2023-08-27 06:40:29,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474792887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:29,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:29,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:40:29,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245439526] [2023-08-27 06:40:29,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:29,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:40:29,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:29,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:40:29,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:40:29,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 706 [2023-08-27 06:40:29,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 88 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:29,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:29,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 706 [2023-08-27 06:40:29,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:29,359 INFO L124 PetriNetUnfolderBase]: 342/580 cut-off events. [2023-08-27 06:40:29,359 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-27 06:40:29,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 580 events. 342/580 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2554 event pairs, 222 based on Foata normal form. 10/316 useless extension candidates. Maximal degree in co-relation 1291. Up to 531 conditions per place. [2023-08-27 06:40:29,363 INFO L140 encePairwiseOnDemand]: 703/706 looper letters, 68 selfloop transitions, 7 changer transitions 0/78 dead transitions. [2023-08-27 06:40:29,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 544 flow [2023-08-27 06:40:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:40:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:40:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 915 transitions. [2023-08-27 06:40:29,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43201133144475923 [2023-08-27 06:40:29,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 915 transitions. [2023-08-27 06:40:29,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 915 transitions. [2023-08-27 06:40:29,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:29,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 915 transitions. [2023-08-27 06:40:29,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:29,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:29,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:29,373 INFO L175 Difference]: Start difference. First operand has 55 places, 88 transitions, 476 flow. Second operand 3 states and 915 transitions. [2023-08-27 06:40:29,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 544 flow [2023-08-27 06:40:29,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 78 transitions, 522 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:29,376 INFO L231 Difference]: Finished difference. Result has 54 places, 78 transitions, 386 flow [2023-08-27 06:40:29,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=386, PETRI_PLACES=54, PETRI_TRANSITIONS=78} [2023-08-27 06:40:29,377 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-08-27 06:40:29,377 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 78 transitions, 386 flow [2023-08-27 06:40:29,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:29,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:29,378 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 06:40:29,387 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 06:40:29,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:29,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:29,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:29,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2096234209, now seen corresponding path program 2 times [2023-08-27 06:40:29,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:29,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494325295] [2023-08-27 06:40:29,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:29,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:29,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:29,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640153799] [2023-08-27 06:40:29,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:40:29,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:29,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:29,601 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 06:40:29,603 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 06:40:29,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:40:29,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:40:29,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 06:40:29,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:29,746 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 06:40:29,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:29,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:29,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494325295] [2023-08-27 06:40:29,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:29,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640153799] [2023-08-27 06:40:29,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640153799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:29,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:29,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:40:29,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563818358] [2023-08-27 06:40:29,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:29,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:40:29,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:29,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:40:29,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:40:29,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 706 [2023-08-27 06:40:29,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 78 transitions, 386 flow. Second operand has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:29,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:29,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 706 [2023-08-27 06:40:29,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:31,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-08-27 06:40:31,975 INFO L124 PetriNetUnfolderBase]: 342/579 cut-off events. [2023-08-27 06:40:31,975 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-27 06:40:31,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 579 events. 342/579 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2564 event pairs, 222 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 1281. Up to 558 conditions per place. [2023-08-27 06:40:31,979 INFO L140 encePairwiseOnDemand]: 703/706 looper letters, 68 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2023-08-27 06:40:31,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 524 flow [2023-08-27 06:40:31,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:40:31,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:40:31,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 875 transitions. [2023-08-27 06:40:31,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131255901794145 [2023-08-27 06:40:31,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 875 transitions. [2023-08-27 06:40:31,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 875 transitions. [2023-08-27 06:40:31,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:31,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 875 transitions. [2023-08-27 06:40:31,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.6666666666667) internal successors, (875), 3 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:31,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:31,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:31,988 INFO L175 Difference]: Start difference. First operand has 54 places, 78 transitions, 386 flow. Second operand 3 states and 875 transitions. [2023-08-27 06:40:31,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 524 flow [2023-08-27 06:40:31,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 510 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:31,991 INFO L231 Difference]: Finished difference. Result has 53 places, 77 transitions, 374 flow [2023-08-27 06:40:31,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=53, PETRI_TRANSITIONS=77} [2023-08-27 06:40:31,992 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2023-08-27 06:40:31,992 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 77 transitions, 374 flow [2023-08-27 06:40:31,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:31,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:31,992 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:32,004 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 06:40:32,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:32,198 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:32,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:32,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1572265963, now seen corresponding path program 1 times [2023-08-27 06:40:32,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:32,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696135735] [2023-08-27 06:40:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:32,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:32,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:32,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108492652] [2023-08-27 06:40:32,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:32,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:32,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:32,219 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 06:40:32,221 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 06:40:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:32,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:40:32,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:32,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:32,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:32,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696135735] [2023-08-27 06:40:32,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:32,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108492652] [2023-08-27 06:40:32,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108492652] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:32,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:40:32,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-08-27 06:40:32,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330736160] [2023-08-27 06:40:32,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:32,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:40:32,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:32,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:40:32,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:40:32,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 706 [2023-08-27 06:40:32,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 77 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 233.71428571428572) internal successors, (1636), 7 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:32,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:32,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 706 [2023-08-27 06:40:32,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:32,789 INFO L124 PetriNetUnfolderBase]: 680/1118 cut-off events. [2023-08-27 06:40:32,789 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-27 06:40:32,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 1118 events. 680/1118 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5481 event pairs, 462 based on Foata normal form. 2/594 useless extension candidates. Maximal degree in co-relation 2381. Up to 592 conditions per place. [2023-08-27 06:40:32,796 INFO L140 encePairwiseOnDemand]: 696/706 looper letters, 93 selfloop transitions, 10 changer transitions 1/106 dead transitions. [2023-08-27 06:40:32,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 106 transitions, 659 flow [2023-08-27 06:40:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:40:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:40:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1470 transitions. [2023-08-27 06:40:32,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34702549575070823 [2023-08-27 06:40:32,800 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1470 transitions. [2023-08-27 06:40:32,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1470 transitions. [2023-08-27 06:40:32,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:32,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1470 transitions. [2023-08-27 06:40:32,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:32,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:32,811 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:32,811 INFO L175 Difference]: Start difference. First operand has 53 places, 77 transitions, 374 flow. Second operand 6 states and 1470 transitions. [2023-08-27 06:40:32,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 106 transitions, 659 flow [2023-08-27 06:40:32,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 106 transitions, 647 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:32,814 INFO L231 Difference]: Finished difference. Result has 57 places, 80 transitions, 415 flow [2023-08-27 06:40:32,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=415, PETRI_PLACES=57, PETRI_TRANSITIONS=80} [2023-08-27 06:40:32,815 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-27 06:40:32,815 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 80 transitions, 415 flow [2023-08-27 06:40:32,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 233.71428571428572) internal successors, (1636), 7 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:32,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:32,816 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 06:40:32,827 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 06:40:33,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:33,028 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:33,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:33,028 INFO L85 PathProgramCache]: Analyzing trace with hash 296308280, now seen corresponding path program 1 times [2023-08-27 06:40:33,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:33,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243622896] [2023-08-27 06:40:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:33,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:33,041 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:33,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911250229] [2023-08-27 06:40:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:33,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:33,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:33,043 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 06:40:33,045 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 06:40:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:33,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:40:33,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:40:33,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:33,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:33,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243622896] [2023-08-27 06:40:33,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:33,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911250229] [2023-08-27 06:40:33,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911250229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:33,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:33,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 06:40:33,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829654295] [2023-08-27 06:40:33,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:33,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:40:33,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:33,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:40:33,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 06:40:33,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 706 [2023-08-27 06:40:33,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 80 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 258.25) internal successors, (1033), 4 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:33,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:33,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 706 [2023-08-27 06:40:33,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:33,399 INFO L124 PetriNetUnfolderBase]: 636/1071 cut-off events. [2023-08-27 06:40:33,399 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-08-27 06:40:33,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2302 conditions, 1071 events. 636/1071 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5396 event pairs, 426 based on Foata normal form. 1/567 useless extension candidates. Maximal degree in co-relation 2291. Up to 1034 conditions per place. [2023-08-27 06:40:33,405 INFO L140 encePairwiseOnDemand]: 701/706 looper letters, 68 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2023-08-27 06:40:33,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 578 flow [2023-08-27 06:40:33,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:40:33,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:40:33,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1074 transitions. [2023-08-27 06:40:33,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3803116147308782 [2023-08-27 06:40:33,409 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1074 transitions. [2023-08-27 06:40:33,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1074 transitions. [2023-08-27 06:40:33,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:33,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1074 transitions. [2023-08-27 06:40:33,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 268.5) internal successors, (1074), 4 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:33,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 706.0) internal successors, (3530), 5 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:33,417 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 706.0) internal successors, (3530), 5 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:33,417 INFO L175 Difference]: Start difference. First operand has 57 places, 80 transitions, 415 flow. Second operand 4 states and 1074 transitions. [2023-08-27 06:40:33,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 578 flow [2023-08-27 06:40:33,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 81 transitions, 572 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-27 06:40:33,420 INFO L231 Difference]: Finished difference. Result has 60 places, 81 transitions, 436 flow [2023-08-27 06:40:33,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=436, PETRI_PLACES=60, PETRI_TRANSITIONS=81} [2023-08-27 06:40:33,421 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2023-08-27 06:40:33,421 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 81 transitions, 436 flow [2023-08-27 06:40:33,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.25) internal successors, (1033), 4 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:33,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:33,422 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:33,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 06:40:33,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-27 06:40:33,622 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:33,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:33,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1572367333, now seen corresponding path program 2 times [2023-08-27 06:40:33,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:33,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069250781] [2023-08-27 06:40:33,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:33,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:33,634 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:33,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [940145096] [2023-08-27 06:40:33,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:40:33,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:33,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:33,635 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 06:40:33,643 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 06:40:33,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:40:33,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:40:33,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:40:33,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:33,770 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 06:40:33,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:33,784 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 06:40:33,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:33,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069250781] [2023-08-27 06:40:33,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:33,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940145096] [2023-08-27 06:40:33,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940145096] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:33,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:40:33,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2023-08-27 06:40:33,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106932865] [2023-08-27 06:40:33,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:33,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:40:33,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:33,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:40:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 06:40:33,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 706 [2023-08-27 06:40:33,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 81 transitions, 436 flow. Second operand has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:33,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:33,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 706 [2023-08-27 06:40:33,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:33,937 INFO L124 PetriNetUnfolderBase]: 632/1065 cut-off events. [2023-08-27 06:40:33,938 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-08-27 06:40:33,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2278 conditions, 1065 events. 632/1065 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5423 event pairs, 426 based on Foata normal form. 0/567 useless extension candidates. Maximal degree in co-relation 2266. Up to 1012 conditions per place. [2023-08-27 06:40:33,944 INFO L140 encePairwiseOnDemand]: 700/706 looper letters, 52 selfloop transitions, 21 changer transitions 0/76 dead transitions. [2023-08-27 06:40:33,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 542 flow [2023-08-27 06:40:33,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:40:33,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:40:33,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1130 transitions. [2023-08-27 06:40:33,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40014164305949007 [2023-08-27 06:40:33,948 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1130 transitions. [2023-08-27 06:40:33,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1130 transitions. [2023-08-27 06:40:33,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:33,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1130 transitions. [2023-08-27 06:40:33,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 282.5) internal successors, (1130), 4 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:33,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 706.0) internal successors, (3530), 5 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:33,968 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 706.0) internal successors, (3530), 5 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:33,968 INFO L175 Difference]: Start difference. First operand has 60 places, 81 transitions, 436 flow. Second operand 4 states and 1130 transitions. [2023-08-27 06:40:33,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 542 flow [2023-08-27 06:40:33,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 515 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:33,971 INFO L231 Difference]: Finished difference. Result has 61 places, 76 transitions, 434 flow [2023-08-27 06:40:33,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=434, PETRI_PLACES=61, PETRI_TRANSITIONS=76} [2023-08-27 06:40:33,971 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2023-08-27 06:40:33,971 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 76 transitions, 434 flow [2023-08-27 06:40:33,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:33,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:33,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:33,980 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 06:40:34,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 06:40:34,172 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:34,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:34,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1460448946, now seen corresponding path program 1 times [2023-08-27 06:40:34,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:34,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25106400] [2023-08-27 06:40:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:34,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:34,182 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:34,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079997590] [2023-08-27 06:40:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:34,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:34,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:34,184 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 06:40:34,186 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 06:40:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:34,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:40:34,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:34,336 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 06:40:34,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:34,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:34,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25106400] [2023-08-27 06:40:34,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:34,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079997590] [2023-08-27 06:40:34,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079997590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:34,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:34,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 06:40:34,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375601125] [2023-08-27 06:40:34,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:34,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:40:34,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:34,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:40:34,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:40:34,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 706 [2023-08-27 06:40:34,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 76 transitions, 434 flow. Second operand has 5 states, 5 states have (on average 252.6) internal successors, (1263), 5 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:34,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:34,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 706 [2023-08-27 06:40:34,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:34,618 INFO L124 PetriNetUnfolderBase]: 844/1520 cut-off events. [2023-08-27 06:40:34,619 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2023-08-27 06:40:34,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3302 conditions, 1520 events. 844/1520 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8484 event pairs, 564 based on Foata normal form. 0/925 useless extension candidates. Maximal degree in co-relation 3289. Up to 970 conditions per place. [2023-08-27 06:40:34,628 INFO L140 encePairwiseOnDemand]: 695/706 looper letters, 118 selfloop transitions, 19 changer transitions 0/139 dead transitions. [2023-08-27 06:40:34,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 139 transitions, 999 flow [2023-08-27 06:40:34,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:40:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:40:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1600 transitions. [2023-08-27 06:40:34,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3777148253068933 [2023-08-27 06:40:34,632 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1600 transitions. [2023-08-27 06:40:34,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1600 transitions. [2023-08-27 06:40:34,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:34,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1600 transitions. [2023-08-27 06:40:34,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.6666666666667) internal successors, (1600), 6 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:34,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:34,641 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:34,641 INFO L175 Difference]: Start difference. First operand has 61 places, 76 transitions, 434 flow. Second operand 6 states and 1600 transitions. [2023-08-27 06:40:34,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 139 transitions, 999 flow [2023-08-27 06:40:34,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 139 transitions, 964 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:34,645 INFO L231 Difference]: Finished difference. Result has 67 places, 85 transitions, 558 flow [2023-08-27 06:40:34,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=558, PETRI_PLACES=67, PETRI_TRANSITIONS=85} [2023-08-27 06:40:34,646 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2023-08-27 06:40:34,646 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 85 transitions, 558 flow [2023-08-27 06:40:34,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 252.6) internal successors, (1263), 5 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:34,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:34,646 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 06:40:34,655 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 06:40:34,856 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,SelfDestructingSolverStorable10 [2023-08-27 06:40:34,856 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:34,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:34,856 INFO L85 PathProgramCache]: Analyzing trace with hash 713708573, now seen corresponding path program 1 times [2023-08-27 06:40:34,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:34,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846311020] [2023-08-27 06:40:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:34,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:34,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:34,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230435158] [2023-08-27 06:40:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:34,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:34,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:34,870 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 06:40:34,873 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 06:40:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:34,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 06:40:34,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:40:35,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 06:40:35,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:35,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846311020] [2023-08-27 06:40:35,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:35,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230435158] [2023-08-27 06:40:35,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230435158] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:35,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:40:35,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-08-27 06:40:35,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344931689] [2023-08-27 06:40:35,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:35,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 06:40:35,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:35,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 06:40:35,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-27 06:40:35,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 706 [2023-08-27 06:40:35,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 85 transitions, 558 flow. Second operand has 10 states, 10 states have (on average 258.2) internal successors, (2582), 10 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:35,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:35,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 706 [2023-08-27 06:40:35,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:35,509 INFO L124 PetriNetUnfolderBase]: 1217/2147 cut-off events. [2023-08-27 06:40:35,509 INFO L125 PetriNetUnfolderBase]: For 563/638 co-relation queries the response was YES. [2023-08-27 06:40:35,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5091 conditions, 2147 events. 1217/2147 cut-off events. For 563/638 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 13526 event pairs, 858 based on Foata normal form. 76/1305 useless extension candidates. Maximal degree in co-relation 5075. Up to 1376 conditions per place. [2023-08-27 06:40:35,523 INFO L140 encePairwiseOnDemand]: 698/706 looper letters, 95 selfloop transitions, 20 changer transitions 0/119 dead transitions. [2023-08-27 06:40:35,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 119 transitions, 911 flow [2023-08-27 06:40:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:40:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:40:35,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2395 transitions. [2023-08-27 06:40:35,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37692791942083725 [2023-08-27 06:40:35,530 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2395 transitions. [2023-08-27 06:40:35,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2395 transitions. [2023-08-27 06:40:35,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:35,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2395 transitions. [2023-08-27 06:40:35,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 266.1111111111111) internal successors, (2395), 9 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:35,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 706.0) internal successors, (7060), 10 states have internal predecessors, (7060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:35,543 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 706.0) internal successors, (7060), 10 states have internal predecessors, (7060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:35,543 INFO L175 Difference]: Start difference. First operand has 67 places, 85 transitions, 558 flow. Second operand 9 states and 2395 transitions. [2023-08-27 06:40:35,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 119 transitions, 911 flow [2023-08-27 06:40:35,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 119 transitions, 900 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:40:35,548 INFO L231 Difference]: Finished difference. Result has 75 places, 89 transitions, 635 flow [2023-08-27 06:40:35,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=75, PETRI_TRANSITIONS=89} [2023-08-27 06:40:35,549 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2023-08-27 06:40:35,550 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 89 transitions, 635 flow [2023-08-27 06:40:35,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 258.2) internal successors, (2582), 10 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:35,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:35,550 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-27 06:40:35,559 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 06:40:35,756 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,SelfDestructingSolverStorable11 [2023-08-27 06:40:35,756 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:35,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:35,757 INFO L85 PathProgramCache]: Analyzing trace with hash 768215768, now seen corresponding path program 2 times [2023-08-27 06:40:35,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:35,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241221630] [2023-08-27 06:40:35,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:35,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:35,771 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:35,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136926761] [2023-08-27 06:40:35,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:40:35,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:35,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:35,773 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 06:40:35,775 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 06:40:35,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:40:35,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:40:35,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 06:40:35,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-27 06:40:35,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:35,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:35,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241221630] [2023-08-27 06:40:35,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136926761] [2023-08-27 06:40:35,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136926761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:35,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:35,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:40:35,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953641350] [2023-08-27 06:40:35,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:35,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:40:35,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:35,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:40:35,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 06:40:35,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 706 [2023-08-27 06:40:35,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 89 transitions, 635 flow. Second operand has 4 states, 4 states have (on average 273.25) internal successors, (1093), 4 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:35,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:35,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 706 [2023-08-27 06:40:35,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:38,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-08-27 06:40:38,711 INFO L124 PetriNetUnfolderBase]: 1532/2648 cut-off events. [2023-08-27 06:40:38,711 INFO L125 PetriNetUnfolderBase]: For 599/674 co-relation queries the response was YES. [2023-08-27 06:40:38,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6251 conditions, 2648 events. 1532/2648 cut-off events. For 599/674 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 17028 event pairs, 1080 based on Foata normal form. 76/1540 useless extension candidates. Maximal degree in co-relation 6233. Up to 1367 conditions per place. [2023-08-27 06:40:38,776 INFO L140 encePairwiseOnDemand]: 703/706 looper letters, 109 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2023-08-27 06:40:38,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 117 transitions, 925 flow [2023-08-27 06:40:38,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:40:38,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:40:38,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1157 transitions. [2023-08-27 06:40:38,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097025495750708 [2023-08-27 06:40:38,780 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1157 transitions. [2023-08-27 06:40:38,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1157 transitions. [2023-08-27 06:40:38,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:38,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1157 transitions. [2023-08-27 06:40:38,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 289.25) internal successors, (1157), 4 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:38,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 706.0) internal successors, (3530), 5 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:38,786 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 706.0) internal successors, (3530), 5 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:38,786 INFO L175 Difference]: Start difference. First operand has 75 places, 89 transitions, 635 flow. Second operand 4 states and 1157 transitions. [2023-08-27 06:40:38,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 117 transitions, 925 flow [2023-08-27 06:40:38,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 117 transitions, 910 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:38,791 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 614 flow [2023-08-27 06:40:38,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=614, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2023-08-27 06:40:38,792 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2023-08-27 06:40:38,792 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 614 flow [2023-08-27 06:40:38,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 273.25) internal successors, (1093), 4 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:38,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:38,793 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-27 06:40:38,803 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 06:40:38,998 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,SelfDestructingSolverStorable12 [2023-08-27 06:40:38,998 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:38,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:38,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1498853017, now seen corresponding path program 1 times [2023-08-27 06:40:38,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:38,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672580158] [2023-08-27 06:40:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:38,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:39,016 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:39,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407852322] [2023-08-27 06:40:39,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:39,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:39,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:39,017 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 06:40:39,023 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 06:40:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:39,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 06:40:39,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:39,173 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 06:40:39,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:39,218 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 06:40:39,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:39,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672580158] [2023-08-27 06:40:39,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:39,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407852322] [2023-08-27 06:40:39,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407852322] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:39,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:40:39,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-27 06:40:39,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492026668] [2023-08-27 06:40:39,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:39,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 06:40:39,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:39,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 06:40:39,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-27 06:40:39,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 706 [2023-08-27 06:40:39,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 614 flow. Second operand has 12 states, 12 states have (on average 276.25) internal successors, (3315), 12 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:39,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:39,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 706 [2023-08-27 06:40:39,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:39,624 INFO L124 PetriNetUnfolderBase]: 1568/2720 cut-off events. [2023-08-27 06:40:39,624 INFO L125 PetriNetUnfolderBase]: For 868/941 co-relation queries the response was YES. [2023-08-27 06:40:39,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6591 conditions, 2720 events. 1568/2720 cut-off events. For 868/941 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 17593 event pairs, 1080 based on Foata normal form. 97/1605 useless extension candidates. Maximal degree in co-relation 6572. Up to 2586 conditions per place. [2023-08-27 06:40:39,640 INFO L140 encePairwiseOnDemand]: 697/706 looper letters, 39 selfloop transitions, 87 changer transitions 0/130 dead transitions. [2023-08-27 06:40:39,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 130 transitions, 1196 flow [2023-08-27 06:40:39,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 06:40:39,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 06:40:39,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3404 transitions. [2023-08-27 06:40:39,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40179414542020775 [2023-08-27 06:40:39,649 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3404 transitions. [2023-08-27 06:40:39,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3404 transitions. [2023-08-27 06:40:39,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:39,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3404 transitions. [2023-08-27 06:40:39,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 283.6666666666667) internal successors, (3404), 12 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:39,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 706.0) internal successors, (9178), 13 states have internal predecessors, (9178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:39,666 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 706.0) internal successors, (9178), 13 states have internal predecessors, (9178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:39,666 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 614 flow. Second operand 12 states and 3404 transitions. [2023-08-27 06:40:39,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 130 transitions, 1196 flow [2023-08-27 06:40:39,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 130 transitions, 1195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:40:39,672 INFO L231 Difference]: Finished difference. Result has 91 places, 130 transitions, 1201 flow [2023-08-27 06:40:39,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1201, PETRI_PLACES=91, PETRI_TRANSITIONS=130} [2023-08-27 06:40:39,673 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 37 predicate places. [2023-08-27 06:40:39,673 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 130 transitions, 1201 flow [2023-08-27 06:40:39,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 276.25) internal successors, (3315), 12 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:39,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:39,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:39,682 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 06:40:39,880 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,SelfDestructingSolverStorable13 [2023-08-27 06:40:39,880 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:39,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:39,880 INFO L85 PathProgramCache]: Analyzing trace with hash -657377190, now seen corresponding path program 1 times [2023-08-27 06:40:39,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:39,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387646341] [2023-08-27 06:40:39,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:39,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:39,889 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:39,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484930693] [2023-08-27 06:40:39,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:39,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:39,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:39,890 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 06:40:39,915 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 06:40:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:40,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:40:40,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:40,037 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 06:40:40,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:40,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387646341] [2023-08-27 06:40:40,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484930693] [2023-08-27 06:40:40,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484930693] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:40,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:40,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:40:40,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749563363] [2023-08-27 06:40:40,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:40,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:40:40,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:40,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:40:40,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:40:40,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 706 [2023-08-27 06:40:40,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 130 transitions, 1201 flow. Second operand has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:40,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:40,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 706 [2023-08-27 06:40:40,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:40,363 INFO L124 PetriNetUnfolderBase]: 1041/1848 cut-off events. [2023-08-27 06:40:40,363 INFO L125 PetriNetUnfolderBase]: For 708/770 co-relation queries the response was YES. [2023-08-27 06:40:40,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4943 conditions, 1848 events. 1041/1848 cut-off events. For 708/770 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10752 event pairs, 707 based on Foata normal form. 65/1254 useless extension candidates. Maximal degree in co-relation 4918. Up to 1522 conditions per place. [2023-08-27 06:40:40,377 INFO L140 encePairwiseOnDemand]: 697/706 looper letters, 127 selfloop transitions, 29 changer transitions 9/167 dead transitions. [2023-08-27 06:40:40,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 167 transitions, 1737 flow [2023-08-27 06:40:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:40:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:40:40,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1361 transitions. [2023-08-27 06:40:40,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38555240793201134 [2023-08-27 06:40:40,381 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1361 transitions. [2023-08-27 06:40:40,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1361 transitions. [2023-08-27 06:40:40,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:40,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1361 transitions. [2023-08-27 06:40:40,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 272.2) internal successors, (1361), 5 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:40,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 706.0) internal successors, (4236), 6 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:40,390 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 706.0) internal successors, (4236), 6 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:40,390 INFO L175 Difference]: Start difference. First operand has 91 places, 130 transitions, 1201 flow. Second operand 5 states and 1361 transitions. [2023-08-27 06:40:40,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 167 transitions, 1737 flow [2023-08-27 06:40:40,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 167 transitions, 1443 flow, removed 91 selfloop flow, removed 5 redundant places. [2023-08-27 06:40:40,401 INFO L231 Difference]: Finished difference. Result has 92 places, 132 transitions, 1022 flow [2023-08-27 06:40:40,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1022, PETRI_PLACES=92, PETRI_TRANSITIONS=132} [2023-08-27 06:40:40,402 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2023-08-27 06:40:40,402 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 132 transitions, 1022 flow [2023-08-27 06:40:40,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:40,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:40,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:40,409 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 06:40:40,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:40,609 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:40,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:40,609 INFO L85 PathProgramCache]: Analyzing trace with hash -455939694, now seen corresponding path program 1 times [2023-08-27 06:40:40,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:40,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454834238] [2023-08-27 06:40:40,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:40,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:40,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:40,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877666175] [2023-08-27 06:40:40,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:40,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:40,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:40,622 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 06:40:40,632 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 06:40:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:40,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 06:40:40,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:40,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 06:40:40,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:40,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:40,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454834238] [2023-08-27 06:40:40,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:40,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877666175] [2023-08-27 06:40:40,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877666175] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:40,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:40,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:40:40,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978505047] [2023-08-27 06:40:40,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:40,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:40:40,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:40,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:40:40,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:40:40,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 706 [2023-08-27 06:40:40,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 132 transitions, 1022 flow. Second operand has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:40,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:40,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 706 [2023-08-27 06:40:40,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:41,028 INFO L124 PetriNetUnfolderBase]: 1324/2294 cut-off events. [2023-08-27 06:40:41,028 INFO L125 PetriNetUnfolderBase]: For 1151/1186 co-relation queries the response was YES. [2023-08-27 06:40:41,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6073 conditions, 2294 events. 1324/2294 cut-off events. For 1151/1186 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12846 event pairs, 476 based on Foata normal form. 35/1463 useless extension candidates. Maximal degree in co-relation 6046. Up to 1531 conditions per place. [2023-08-27 06:40:41,047 INFO L140 encePairwiseOnDemand]: 701/706 looper letters, 144 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2023-08-27 06:40:41,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 153 transitions, 1379 flow [2023-08-27 06:40:41,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:40:41,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:40:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 933 transitions. [2023-08-27 06:40:41,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405099150141643 [2023-08-27 06:40:41,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 933 transitions. [2023-08-27 06:40:41,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 933 transitions. [2023-08-27 06:40:41,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:41,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 933 transitions. [2023-08-27 06:40:41,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:41,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:41,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:41,055 INFO L175 Difference]: Start difference. First operand has 92 places, 132 transitions, 1022 flow. Second operand 3 states and 933 transitions. [2023-08-27 06:40:41,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 153 transitions, 1379 flow [2023-08-27 06:40:41,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 153 transitions, 1326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:41,065 INFO L231 Difference]: Finished difference. Result has 94 places, 135 transitions, 1009 flow [2023-08-27 06:40:41,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1009, PETRI_PLACES=94, PETRI_TRANSITIONS=135} [2023-08-27 06:40:41,065 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2023-08-27 06:40:41,066 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 135 transitions, 1009 flow [2023-08-27 06:40:41,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:41,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:41,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:41,076 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 06:40:41,272 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,SelfDestructingSolverStorable15 [2023-08-27 06:40:41,272 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:41,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:41,273 INFO L85 PathProgramCache]: Analyzing trace with hash -455939696, now seen corresponding path program 1 times [2023-08-27 06:40:41,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:41,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409695926] [2023-08-27 06:40:41,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:41,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:41,282 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:41,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868267747] [2023-08-27 06:40:41,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:41,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:41,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:41,284 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 06:40:41,308 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 06:40:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:41,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 06:40:41,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:41,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 06:40:41,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:41,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:41,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409695926] [2023-08-27 06:40:41,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:41,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868267747] [2023-08-27 06:40:41,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868267747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:41,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:41,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:40:41,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774487934] [2023-08-27 06:40:41,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:41,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:40:41,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:41,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:40:41,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:40:41,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 706 [2023-08-27 06:40:41,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 135 transitions, 1009 flow. Second operand has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:41,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:41,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 706 [2023-08-27 06:40:41,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:41,697 INFO L124 PetriNetUnfolderBase]: 1159/2039 cut-off events. [2023-08-27 06:40:41,698 INFO L125 PetriNetUnfolderBase]: For 1727/1758 co-relation queries the response was YES. [2023-08-27 06:40:41,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6348 conditions, 2039 events. 1159/2039 cut-off events. For 1727/1758 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11855 event pairs, 313 based on Foata normal form. 163/1644 useless extension candidates. Maximal degree in co-relation 6320. Up to 1040 conditions per place. [2023-08-27 06:40:41,709 INFO L140 encePairwiseOnDemand]: 703/706 looper letters, 142 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2023-08-27 06:40:41,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 150 transitions, 1338 flow [2023-08-27 06:40:41,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:40:41,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:40:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 928 transitions. [2023-08-27 06:40:41,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4381491973559962 [2023-08-27 06:40:41,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 928 transitions. [2023-08-27 06:40:41,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 928 transitions. [2023-08-27 06:40:41,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:41,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 928 transitions. [2023-08-27 06:40:41,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:41,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:41,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:41,715 INFO L175 Difference]: Start difference. First operand has 94 places, 135 transitions, 1009 flow. Second operand 3 states and 928 transitions. [2023-08-27 06:40:41,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 150 transitions, 1338 flow [2023-08-27 06:40:41,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 150 transitions, 1328 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:41,725 INFO L231 Difference]: Finished difference. Result has 93 places, 133 transitions, 999 flow [2023-08-27 06:40:41,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=999, PETRI_PLACES=93, PETRI_TRANSITIONS=133} [2023-08-27 06:40:41,726 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 39 predicate places. [2023-08-27 06:40:41,726 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 133 transitions, 999 flow [2023-08-27 06:40:41,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:41,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:41,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:41,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 06:40:41,932 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,SelfDestructingSolverStorable16 [2023-08-27 06:40:41,932 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:41,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:41,933 INFO L85 PathProgramCache]: Analyzing trace with hash -273067218, now seen corresponding path program 1 times [2023-08-27 06:40:41,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:41,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913640853] [2023-08-27 06:40:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:41,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:41,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:41,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18620986] [2023-08-27 06:40:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:41,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:41,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:41,943 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 06:40:41,951 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 06:40:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:42,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:40:42,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:42,125 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 06:40:42,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:42,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:42,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913640853] [2023-08-27 06:40:42,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:42,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18620986] [2023-08-27 06:40:42,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18620986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:42,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:42,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 06:40:42,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192198165] [2023-08-27 06:40:42,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:42,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:40:42,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:42,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:40:42,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:40:42,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 706 [2023-08-27 06:40:42,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 133 transitions, 999 flow. Second operand has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:42,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:42,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 706 [2023-08-27 06:40:42,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:42,423 INFO L124 PetriNetUnfolderBase]: 795/1440 cut-off events. [2023-08-27 06:40:42,424 INFO L125 PetriNetUnfolderBase]: For 1815/2014 co-relation queries the response was YES. [2023-08-27 06:40:42,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4536 conditions, 1440 events. 795/1440 cut-off events. For 1815/2014 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8114 event pairs, 501 based on Foata normal form. 199/1283 useless extension candidates. Maximal degree in co-relation 4508. Up to 1076 conditions per place. [2023-08-27 06:40:42,432 INFO L140 encePairwiseOnDemand]: 695/706 looper letters, 139 selfloop transitions, 19 changer transitions 1/163 dead transitions. [2023-08-27 06:40:42,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 163 transitions, 1444 flow [2023-08-27 06:40:42,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:40:42,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:40:42,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1432 transitions. [2023-08-27 06:40:42,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380547686496695 [2023-08-27 06:40:42,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1432 transitions. [2023-08-27 06:40:42,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1432 transitions. [2023-08-27 06:40:42,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:42,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1432 transitions. [2023-08-27 06:40:42,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 238.66666666666666) internal successors, (1432), 6 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:42,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:42,441 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:42,441 INFO L175 Difference]: Start difference. First operand has 93 places, 133 transitions, 999 flow. Second operand 6 states and 1432 transitions. [2023-08-27 06:40:42,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 163 transitions, 1444 flow [2023-08-27 06:40:42,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 163 transitions, 1422 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:42,450 INFO L231 Difference]: Finished difference. Result has 98 places, 137 transitions, 1069 flow [2023-08-27 06:40:42,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1069, PETRI_PLACES=98, PETRI_TRANSITIONS=137} [2023-08-27 06:40:42,450 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2023-08-27 06:40:42,450 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 137 transitions, 1069 flow [2023-08-27 06:40:42,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:42,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:42,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:42,460 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 06:40:42,656 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,SelfDestructingSolverStorable17 [2023-08-27 06:40:42,657 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:42,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:42,657 INFO L85 PathProgramCache]: Analyzing trace with hash -273067224, now seen corresponding path program 1 times [2023-08-27 06:40:42,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:42,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604294994] [2023-08-27 06:40:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:42,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:42,674 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:42,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788433059] [2023-08-27 06:40:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:42,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:42,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:42,676 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 06:40:42,698 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 06:40:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:42,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 06:40:42,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:40:42,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:42,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:42,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604294994] [2023-08-27 06:40:42,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:42,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788433059] [2023-08-27 06:40:42,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788433059] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:42,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:42,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:40:42,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294959475] [2023-08-27 06:40:42,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:42,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:40:42,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:42,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:40:42,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:40:42,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 706 [2023-08-27 06:40:42,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 137 transitions, 1069 flow. Second operand has 3 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:42,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:42,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 706 [2023-08-27 06:40:42,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:43,111 INFO L124 PetriNetUnfolderBase]: 1269/2180 cut-off events. [2023-08-27 06:40:43,111 INFO L125 PetriNetUnfolderBase]: For 2056/2342 co-relation queries the response was YES. [2023-08-27 06:40:43,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6936 conditions, 2180 events. 1269/2180 cut-off events. For 2056/2342 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12147 event pairs, 495 based on Foata normal form. 286/2007 useless extension candidates. Maximal degree in co-relation 6906. Up to 1358 conditions per place. [2023-08-27 06:40:43,123 INFO L140 encePairwiseOnDemand]: 701/706 looper letters, 153 selfloop transitions, 8 changer transitions 0/163 dead transitions. [2023-08-27 06:40:43,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 163 transitions, 1500 flow [2023-08-27 06:40:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:40:43,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:40:43,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 909 transitions. [2023-08-27 06:40:43,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42917847025495753 [2023-08-27 06:40:43,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 909 transitions. [2023-08-27 06:40:43,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 909 transitions. [2023-08-27 06:40:43,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:43,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 909 transitions. [2023-08-27 06:40:43,127 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 06:40:43,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:43,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:43,129 INFO L175 Difference]: Start difference. First operand has 98 places, 137 transitions, 1069 flow. Second operand 3 states and 909 transitions. [2023-08-27 06:40:43,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 163 transitions, 1500 flow [2023-08-27 06:40:43,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 163 transitions, 1470 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 06:40:43,141 INFO L231 Difference]: Finished difference. Result has 98 places, 142 transitions, 1109 flow [2023-08-27 06:40:43,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1109, PETRI_PLACES=98, PETRI_TRANSITIONS=142} [2023-08-27 06:40:43,141 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2023-08-27 06:40:43,142 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 142 transitions, 1109 flow [2023-08-27 06:40:43,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:43,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:43,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:43,149 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 06:40:43,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:43,348 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:43,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:43,349 INFO L85 PathProgramCache]: Analyzing trace with hash -273067261, now seen corresponding path program 1 times [2023-08-27 06:40:43,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:43,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274556728] [2023-08-27 06:40:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:43,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:43,358 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:43,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311507782] [2023-08-27 06:40:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:43,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:43,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:43,360 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:43,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 06:40:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:43,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 06:40:43,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:40:43,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:43,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:43,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274556728] [2023-08-27 06:40:43,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:43,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311507782] [2023-08-27 06:40:43,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311507782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:43,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:43,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:40:43,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890766629] [2023-08-27 06:40:43,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:43,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:40:43,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:43,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:40:43,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:40:43,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 706 [2023-08-27 06:40:43,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 142 transitions, 1109 flow. Second operand has 3 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:43,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:43,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 706 [2023-08-27 06:40:43,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:43,698 INFO L124 PetriNetUnfolderBase]: 1173/2044 cut-off events. [2023-08-27 06:40:43,698 INFO L125 PetriNetUnfolderBase]: For 2484/2754 co-relation queries the response was YES. [2023-08-27 06:40:43,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6976 conditions, 2044 events. 1173/2044 cut-off events. For 2484/2754 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11434 event pairs, 159 based on Foata normal form. 350/2059 useless extension candidates. Maximal degree in co-relation 6945. Up to 1412 conditions per place. [2023-08-27 06:40:43,712 INFO L140 encePairwiseOnDemand]: 703/706 looper letters, 141 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2023-08-27 06:40:43,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 148 transitions, 1412 flow [2023-08-27 06:40:43,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:40:43,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:40:43,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 895 transitions. [2023-08-27 06:40:43,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225684608120869 [2023-08-27 06:40:43,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 895 transitions. [2023-08-27 06:40:43,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 895 transitions. [2023-08-27 06:40:43,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:43,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 895 transitions. [2023-08-27 06:40:43,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:43,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:43,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:43,719 INFO L175 Difference]: Start difference. First operand has 98 places, 142 transitions, 1109 flow. Second operand 3 states and 895 transitions. [2023-08-27 06:40:43,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 148 transitions, 1412 flow [2023-08-27 06:40:43,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 148 transitions, 1400 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:43,731 INFO L231 Difference]: Finished difference. Result has 97 places, 138 transitions, 1075 flow [2023-08-27 06:40:43,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1075, PETRI_PLACES=97, PETRI_TRANSITIONS=138} [2023-08-27 06:40:43,732 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2023-08-27 06:40:43,732 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 138 transitions, 1075 flow [2023-08-27 06:40:43,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:43,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:43,732 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:43,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 06:40:43,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:43,939 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:43,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:43,939 INFO L85 PathProgramCache]: Analyzing trace with hash -71313927, now seen corresponding path program 1 times [2023-08-27 06:40:43,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:43,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259491971] [2023-08-27 06:40:43,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:43,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:43,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:43,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513617282] [2023-08-27 06:40:43,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:43,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:43,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:43,953 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:43,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 06:40:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:44,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:40:44,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:44,133 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 06:40:44,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:44,181 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 06:40:44,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:44,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259491971] [2023-08-27 06:40:44,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:44,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513617282] [2023-08-27 06:40:44,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513617282] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:44,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:40:44,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-27 06:40:44,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680626024] [2023-08-27 06:40:44,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:44,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 06:40:44,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:44,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 06:40:44,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-27 06:40:44,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 706 [2023-08-27 06:40:44,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 138 transitions, 1075 flow. Second operand has 11 states, 11 states have (on average 252.72727272727272) internal successors, (2780), 11 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:44,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:44,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 706 [2023-08-27 06:40:44,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:44,654 INFO L124 PetriNetUnfolderBase]: 1725/3036 cut-off events. [2023-08-27 06:40:44,654 INFO L125 PetriNetUnfolderBase]: For 3733/3865 co-relation queries the response was YES. [2023-08-27 06:40:44,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10261 conditions, 3036 events. 1725/3036 cut-off events. For 3733/3865 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 17835 event pairs, 897 based on Foata normal form. 194/2718 useless extension candidates. Maximal degree in co-relation 10230. Up to 1376 conditions per place. [2023-08-27 06:40:44,671 INFO L140 encePairwiseOnDemand]: 696/706 looper letters, 219 selfloop transitions, 29 changer transitions 4/255 dead transitions. [2023-08-27 06:40:44,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 255 transitions, 2327 flow [2023-08-27 06:40:44,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:40:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:40:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2621 transitions. [2023-08-27 06:40:44,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37124645892351277 [2023-08-27 06:40:44,677 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2621 transitions. [2023-08-27 06:40:44,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2621 transitions. [2023-08-27 06:40:44,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:44,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2621 transitions. [2023-08-27 06:40:44,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 262.1) internal successors, (2621), 10 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:44,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 706.0) internal successors, (7766), 11 states have internal predecessors, (7766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:44,687 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 706.0) internal successors, (7766), 11 states have internal predecessors, (7766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:44,687 INFO L175 Difference]: Start difference. First operand has 97 places, 138 transitions, 1075 flow. Second operand 10 states and 2621 transitions. [2023-08-27 06:40:44,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 255 transitions, 2327 flow [2023-08-27 06:40:44,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 255 transitions, 2299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:44,703 INFO L231 Difference]: Finished difference. Result has 108 places, 143 transitions, 1213 flow [2023-08-27 06:40:44,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1213, PETRI_PLACES=108, PETRI_TRANSITIONS=143} [2023-08-27 06:40:44,703 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2023-08-27 06:40:44,704 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 143 transitions, 1213 flow [2023-08-27 06:40:44,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 252.72727272727272) internal successors, (2780), 11 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:44,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:44,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:44,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 06:40:44,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-27 06:40:44,910 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:44,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:44,911 INFO L85 PathProgramCache]: Analyzing trace with hash -525544743, now seen corresponding path program 1 times [2023-08-27 06:40:44,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:44,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819880566] [2023-08-27 06:40:44,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:44,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:44,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:44,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798742034] [2023-08-27 06:40:44,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:44,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:44,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:44,928 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:44,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 06:40:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:45,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 06:40:45,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 06:40:45,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:45,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:45,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819880566] [2023-08-27 06:40:45,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:45,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798742034] [2023-08-27 06:40:45,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798742034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:45,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:45,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:40:45,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200180877] [2023-08-27 06:40:45,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:45,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:40:45,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:45,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:40:45,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:40:45,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 706 [2023-08-27 06:40:45,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 143 transitions, 1213 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:45,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:45,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 706 [2023-08-27 06:40:45,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:45,441 INFO L124 PetriNetUnfolderBase]: 2151/3592 cut-off events. [2023-08-27 06:40:45,442 INFO L125 PetriNetUnfolderBase]: For 8263/8905 co-relation queries the response was YES. [2023-08-27 06:40:45,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12639 conditions, 3592 events. 2151/3592 cut-off events. For 8263/8905 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 21241 event pairs, 837 based on Foata normal form. 702/3520 useless extension candidates. Maximal degree in co-relation 12605. Up to 2288 conditions per place. [2023-08-27 06:40:45,464 INFO L140 encePairwiseOnDemand]: 698/706 looper letters, 150 selfloop transitions, 11 changer transitions 0/166 dead transitions. [2023-08-27 06:40:45,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 166 transitions, 1658 flow [2023-08-27 06:40:45,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:40:45,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:40:45,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 916 transitions. [2023-08-27 06:40:45,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43248347497639283 [2023-08-27 06:40:45,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 916 transitions. [2023-08-27 06:40:45,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 916 transitions. [2023-08-27 06:40:45,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:45,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 916 transitions. [2023-08-27 06:40:45,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:45,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:45,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:45,470 INFO L175 Difference]: Start difference. First operand has 108 places, 143 transitions, 1213 flow. Second operand 3 states and 916 transitions. [2023-08-27 06:40:45,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 166 transitions, 1658 flow [2023-08-27 06:40:45,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 166 transitions, 1593 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-27 06:40:45,487 INFO L231 Difference]: Finished difference. Result has 106 places, 149 transitions, 1238 flow [2023-08-27 06:40:45,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1238, PETRI_PLACES=106, PETRI_TRANSITIONS=149} [2023-08-27 06:40:45,487 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 52 predicate places. [2023-08-27 06:40:45,487 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 149 transitions, 1238 flow [2023-08-27 06:40:45,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:45,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:45,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:45,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 06:40:45,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 06:40:45,694 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:45,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:45,694 INFO L85 PathProgramCache]: Analyzing trace with hash -525544742, now seen corresponding path program 1 times [2023-08-27 06:40:45,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:45,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439463207] [2023-08-27 06:40:45,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:45,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:45,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:45,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132888076] [2023-08-27 06:40:45,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:45,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:45,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:45,706 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:45,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 06:40:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:45,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 06:40:45,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 06:40:45,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:45,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:45,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439463207] [2023-08-27 06:40:45,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:45,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132888076] [2023-08-27 06:40:45,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132888076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:45,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:45,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:40:45,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587169318] [2023-08-27 06:40:45,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:45,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:40:45,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:45,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:40:45,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:40:45,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 706 [2023-08-27 06:40:45,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 149 transitions, 1238 flow. Second operand has 3 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:45,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:45,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 706 [2023-08-27 06:40:45,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:46,357 INFO L124 PetriNetUnfolderBase]: 2109/3496 cut-off events. [2023-08-27 06:40:46,357 INFO L125 PetriNetUnfolderBase]: For 8003/8561 co-relation queries the response was YES. [2023-08-27 06:40:46,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13601 conditions, 3496 events. 2109/3496 cut-off events. For 8003/8561 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 19889 event pairs, 873 based on Foata normal form. 558/3682 useless extension candidates. Maximal degree in co-relation 13567. Up to 2390 conditions per place. [2023-08-27 06:40:46,374 INFO L140 encePairwiseOnDemand]: 701/706 looper letters, 164 selfloop transitions, 7 changer transitions 0/174 dead transitions. [2023-08-27 06:40:46,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 174 transitions, 1731 flow [2023-08-27 06:40:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:40:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:40:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 906 transitions. [2023-08-27 06:40:46,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42776203966005666 [2023-08-27 06:40:46,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 906 transitions. [2023-08-27 06:40:46,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 906 transitions. [2023-08-27 06:40:46,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:46,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 906 transitions. [2023-08-27 06:40:46,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:46,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:46,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:46,379 INFO L175 Difference]: Start difference. First operand has 106 places, 149 transitions, 1238 flow. Second operand 3 states and 906 transitions. [2023-08-27 06:40:46,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 174 transitions, 1731 flow [2023-08-27 06:40:46,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 174 transitions, 1699 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:46,401 INFO L231 Difference]: Finished difference. Result has 107 places, 149 transitions, 1241 flow [2023-08-27 06:40:46,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1241, PETRI_PLACES=107, PETRI_TRANSITIONS=149} [2023-08-27 06:40:46,402 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 53 predicate places. [2023-08-27 06:40:46,402 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 149 transitions, 1241 flow [2023-08-27 06:40:46,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:46,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:46,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:46,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 06:40:46,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:46,609 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:46,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:46,609 INFO L85 PathProgramCache]: Analyzing trace with hash -525544741, now seen corresponding path program 1 times [2023-08-27 06:40:46,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:46,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387857151] [2023-08-27 06:40:46,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:46,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:46,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:46,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714674100] [2023-08-27 06:40:46,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:46,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:46,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:46,619 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:46,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 06:40:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:46,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 06:40:46,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:46,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 06:40:46,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:40:46,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:46,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387857151] [2023-08-27 06:40:46,770 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:46,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714674100] [2023-08-27 06:40:46,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714674100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:40:46,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:40:46,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:40:46,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73001681] [2023-08-27 06:40:46,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:40:46,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:40:46,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:46,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:40:46,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:40:46,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 706 [2023-08-27 06:40:46,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 149 transitions, 1241 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:46,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:46,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 706 [2023-08-27 06:40:46,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:47,082 INFO L124 PetriNetUnfolderBase]: 1695/2896 cut-off events. [2023-08-27 06:40:47,082 INFO L125 PetriNetUnfolderBase]: For 7285/7815 co-relation queries the response was YES. [2023-08-27 06:40:47,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11468 conditions, 2896 events. 1695/2896 cut-off events. For 7285/7815 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16713 event pairs, 333 based on Foata normal form. 650/3208 useless extension candidates. Maximal degree in co-relation 11433. Up to 1644 conditions per place. [2023-08-27 06:40:47,094 INFO L140 encePairwiseOnDemand]: 701/706 looper letters, 142 selfloop transitions, 11 changer transitions 0/158 dead transitions. [2023-08-27 06:40:47,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 158 transitions, 1606 flow [2023-08-27 06:40:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:40:47,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:40:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 905 transitions. [2023-08-27 06:40:47,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42728989612842305 [2023-08-27 06:40:47,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 905 transitions. [2023-08-27 06:40:47,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 905 transitions. [2023-08-27 06:40:47,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:47,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 905 transitions. [2023-08-27 06:40:47,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:47,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:47,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 706.0) internal successors, (2824), 4 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:47,098 INFO L175 Difference]: Start difference. First operand has 107 places, 149 transitions, 1241 flow. Second operand 3 states and 905 transitions. [2023-08-27 06:40:47,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 158 transitions, 1606 flow [2023-08-27 06:40:47,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 158 transitions, 1592 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:47,110 INFO L231 Difference]: Finished difference. Result has 105 places, 145 transitions, 1229 flow [2023-08-27 06:40:47,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1229, PETRI_PLACES=105, PETRI_TRANSITIONS=145} [2023-08-27 06:40:47,111 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2023-08-27 06:40:47,111 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 145 transitions, 1229 flow [2023-08-27 06:40:47,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:47,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:47,111 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:47,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-27 06:40:47,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:47,318 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:47,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:47,318 INFO L85 PathProgramCache]: Analyzing trace with hash -424508634, now seen corresponding path program 1 times [2023-08-27 06:40:47,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:47,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039708249] [2023-08-27 06:40:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:47,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:47,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:47,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525052272] [2023-08-27 06:40:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:47,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:47,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:47,328 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:47,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 06:40:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:47,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:40:47,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:47,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:47,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:47,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039708249] [2023-08-27 06:40:47,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:47,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525052272] [2023-08-27 06:40:47,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525052272] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:47,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:40:47,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-08-27 06:40:47,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725551803] [2023-08-27 06:40:47,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:47,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 06:40:47,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:47,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 06:40:47,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-27 06:40:47,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 706 [2023-08-27 06:40:47,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 145 transitions, 1229 flow. Second operand has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:47,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:47,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 706 [2023-08-27 06:40:47,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:48,264 INFO L124 PetriNetUnfolderBase]: 2682/4573 cut-off events. [2023-08-27 06:40:48,265 INFO L125 PetriNetUnfolderBase]: For 12204/12956 co-relation queries the response was YES. [2023-08-27 06:40:48,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18237 conditions, 4573 events. 2682/4573 cut-off events. For 12204/12956 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 27826 event pairs, 1323 based on Foata normal form. 812/5009 useless extension candidates. Maximal degree in co-relation 18202. Up to 2787 conditions per place. [2023-08-27 06:40:48,289 INFO L140 encePairwiseOnDemand]: 697/706 looper letters, 197 selfloop transitions, 50 changer transitions 0/250 dead transitions. [2023-08-27 06:40:48,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 250 transitions, 2537 flow [2023-08-27 06:40:48,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:40:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:40:48,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1891 transitions. [2023-08-27 06:40:48,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38263860785107245 [2023-08-27 06:40:48,292 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1891 transitions. [2023-08-27 06:40:48,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1891 transitions. [2023-08-27 06:40:48,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:48,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1891 transitions. [2023-08-27 06:40:48,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 270.14285714285717) internal successors, (1891), 7 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:48,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 706.0) internal successors, (5648), 8 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:48,297 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 706.0) internal successors, (5648), 8 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:48,298 INFO L175 Difference]: Start difference. First operand has 105 places, 145 transitions, 1229 flow. Second operand 7 states and 1891 transitions. [2023-08-27 06:40:48,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 250 transitions, 2537 flow [2023-08-27 06:40:48,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 250 transitions, 2505 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:48,330 INFO L231 Difference]: Finished difference. Result has 113 places, 166 transitions, 1602 flow [2023-08-27 06:40:48,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1602, PETRI_PLACES=113, PETRI_TRANSITIONS=166} [2023-08-27 06:40:48,330 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 59 predicate places. [2023-08-27 06:40:48,330 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 166 transitions, 1602 flow [2023-08-27 06:40:48,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:48,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:48,331 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:48,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-27 06:40:48,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 06:40:48,537 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:40:48,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:48,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1422387673, now seen corresponding path program 2 times [2023-08-27 06:40:48,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:48,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726599450] [2023-08-27 06:40:48,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:48,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:48,550 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:40:48,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [734852042] [2023-08-27 06:40:48,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:40:48,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:48,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:48,552 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:48,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 06:40:48,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:40:48,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:40:48,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 06:40:48,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:49,854 WARN L861 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ c_thread1Thread1of1ForFork0_~i~0 1) .cse0)))) is different from true [2023-08-27 06:40:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 1 not checked. [2023-08-27 06:40:49,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:51,906 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 06:40:51,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:51,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726599450] [2023-08-27 06:40:51,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:40:51,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734852042] [2023-08-27 06:40:51,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734852042] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:51,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:40:51,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-27 06:40:51,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191399972] [2023-08-27 06:40:51,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:51,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:40:51,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:51,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:40:51,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=11, Unknown=3, NotChecked=6, Total=30 [2023-08-27 06:40:51,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 706 [2023-08-27 06:40:51,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 166 transitions, 1602 flow. Second operand has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:51,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:51,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 706 [2023-08-27 06:40:51,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:02,399 INFO L124 PetriNetUnfolderBase]: 2950/5180 cut-off events. [2023-08-27 06:41:02,399 INFO L125 PetriNetUnfolderBase]: For 16859/17147 co-relation queries the response was YES. [2023-08-27 06:41:02,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21875 conditions, 5180 events. 2950/5180 cut-off events. For 16859/17147 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 31960 event pairs, 513 based on Foata normal form. 288/5113 useless extension candidates. Maximal degree in co-relation 21836. Up to 3063 conditions per place. [2023-08-27 06:41:02,425 INFO L140 encePairwiseOnDemand]: 687/706 looper letters, 174 selfloop transitions, 42 changer transitions 8/227 dead transitions. [2023-08-27 06:41:02,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 227 transitions, 2552 flow [2023-08-27 06:41:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:41:02,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:41:02,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1500 transitions. [2023-08-27 06:41:02,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42492917847025496 [2023-08-27 06:41:02,427 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1500 transitions. [2023-08-27 06:41:02,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1500 transitions. [2023-08-27 06:41:02,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:02,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1500 transitions. [2023-08-27 06:41:02,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:02,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 706.0) internal successors, (4236), 6 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:02,432 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 706.0) internal successors, (4236), 6 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:02,432 INFO L175 Difference]: Start difference. First operand has 113 places, 166 transitions, 1602 flow. Second operand 5 states and 1500 transitions. [2023-08-27 06:41:02,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 227 transitions, 2552 flow [2023-08-27 06:41:02,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 227 transitions, 2459 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-08-27 06:41:02,468 INFO L231 Difference]: Finished difference. Result has 115 places, 192 transitions, 1866 flow [2023-08-27 06:41:02,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1513, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1866, PETRI_PLACES=115, PETRI_TRANSITIONS=192} [2023-08-27 06:41:02,468 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2023-08-27 06:41:02,468 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 192 transitions, 1866 flow [2023-08-27 06:41:02,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:02,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:02,469 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2023-08-27 06:41:02,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-27 06:41:02,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 06:41:02,675 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:02,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:02,675 INFO L85 PathProgramCache]: Analyzing trace with hash 250658329, now seen corresponding path program 2 times [2023-08-27 06:41:02,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:02,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350897970] [2023-08-27 06:41:02,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:02,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:02,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:02,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598756698] [2023-08-27 06:41:02,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:41:02,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:02,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:02,694 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:02,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 06:41:02,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:41:02,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:41:02,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:41:02,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:02,873 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 06:41:02,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:41:02,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:02,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350897970] [2023-08-27 06:41:02,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:41:02,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598756698] [2023-08-27 06:41:02,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598756698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:41:02,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:41:02,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:41:02,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682318631] [2023-08-27 06:41:02,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:41:02,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:41:02,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:02,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:41:02,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 06:41:02,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 706 [2023-08-27 06:41:02,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 192 transitions, 1866 flow. Second operand has 4 states, 4 states have (on average 248.5) internal successors, (994), 4 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:02,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:02,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 706 [2023-08-27 06:41:02,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:03,340 INFO L124 PetriNetUnfolderBase]: 2619/4452 cut-off events. [2023-08-27 06:41:03,341 INFO L125 PetriNetUnfolderBase]: For 19024/20126 co-relation queries the response was YES. [2023-08-27 06:41:03,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22074 conditions, 4452 events. 2619/4452 cut-off events. For 19024/20126 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 27049 event pairs, 1176 based on Foata normal form. 1031/5160 useless extension candidates. Maximal degree in co-relation 22034. Up to 4359 conditions per place. [2023-08-27 06:41:03,364 INFO L140 encePairwiseOnDemand]: 702/706 looper letters, 170 selfloop transitions, 15 changer transitions 0/190 dead transitions. [2023-08-27 06:41:03,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 190 transitions, 2181 flow [2023-08-27 06:41:03,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:41:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:41:03,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1023 transitions. [2023-08-27 06:41:03,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36225212464589235 [2023-08-27 06:41:03,365 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1023 transitions. [2023-08-27 06:41:03,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1023 transitions. [2023-08-27 06:41:03,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:03,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1023 transitions. [2023-08-27 06:41:03,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.75) internal successors, (1023), 4 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:03,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 706.0) internal successors, (3530), 5 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:03,368 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 706.0) internal successors, (3530), 5 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:03,368 INFO L175 Difference]: Start difference. First operand has 115 places, 192 transitions, 1866 flow. Second operand 4 states and 1023 transitions. [2023-08-27 06:41:03,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 190 transitions, 2181 flow [2023-08-27 06:41:03,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 190 transitions, 1980 flow, removed 25 selfloop flow, removed 14 redundant places. [2023-08-27 06:41:03,393 INFO L231 Difference]: Finished difference. Result has 98 places, 190 transitions, 1640 flow [2023-08-27 06:41:03,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1640, PETRI_PLACES=98, PETRI_TRANSITIONS=190} [2023-08-27 06:41:03,393 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2023-08-27 06:41:03,393 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 190 transitions, 1640 flow [2023-08-27 06:41:03,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.5) internal successors, (994), 4 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:03,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:03,394 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:03,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-27 06:41:03,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 06:41:03,594 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:03,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:03,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1013252999, now seen corresponding path program 2 times [2023-08-27 06:41:03,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:03,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577022051] [2023-08-27 06:41:03,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:03,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:03,604 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:03,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995748204] [2023-08-27 06:41:03,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:41:03,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:03,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:03,606 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:03,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 06:41:03,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:41:03,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:41:03,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:41:03,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 06:41:03,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 06:41:03,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:03,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577022051] [2023-08-27 06:41:03,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:41:03,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995748204] [2023-08-27 06:41:03,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995748204] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:03,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:41:03,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2023-08-27 06:41:03,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330136236] [2023-08-27 06:41:03,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:03,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:41:03,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:03,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:41:03,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 06:41:03,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 706 [2023-08-27 06:41:03,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 190 transitions, 1640 flow. Second operand has 4 states, 4 states have (on average 267.5) internal successors, (1070), 4 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:03,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:03,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 706 [2023-08-27 06:41:03,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:04,304 INFO L124 PetriNetUnfolderBase]: 2681/4538 cut-off events. [2023-08-27 06:41:04,305 INFO L125 PetriNetUnfolderBase]: For 16253/17209 co-relation queries the response was YES. [2023-08-27 06:41:04,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21371 conditions, 4538 events. 2681/4538 cut-off events. For 16253/17209 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 27238 event pairs, 285 based on Foata normal form. 940/5289 useless extension candidates. Maximal degree in co-relation 21343. Up to 2972 conditions per place. [2023-08-27 06:41:04,324 INFO L140 encePairwiseOnDemand]: 700/706 looper letters, 161 selfloop transitions, 21 changer transitions 20/205 dead transitions. [2023-08-27 06:41:04,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 205 transitions, 2154 flow [2023-08-27 06:41:04,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:41:04,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:41:04,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1098 transitions. [2023-08-27 06:41:04,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888101983002833 [2023-08-27 06:41:04,326 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1098 transitions. [2023-08-27 06:41:04,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1098 transitions. [2023-08-27 06:41:04,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:04,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1098 transitions. [2023-08-27 06:41:04,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 274.5) internal successors, (1098), 4 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:04,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 706.0) internal successors, (3530), 5 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:04,330 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 706.0) internal successors, (3530), 5 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:04,330 INFO L175 Difference]: Start difference. First operand has 98 places, 190 transitions, 1640 flow. Second operand 4 states and 1098 transitions. [2023-08-27 06:41:04,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 205 transitions, 2154 flow [2023-08-27 06:41:04,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 205 transitions, 2134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 06:41:04,381 INFO L231 Difference]: Finished difference. Result has 98 places, 168 transitions, 1388 flow [2023-08-27 06:41:04,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1388, PETRI_PLACES=98, PETRI_TRANSITIONS=168} [2023-08-27 06:41:04,382 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2023-08-27 06:41:04,382 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 168 transitions, 1388 flow [2023-08-27 06:41:04,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 267.5) internal successors, (1070), 4 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:04,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:04,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:04,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-08-27 06:41:04,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 06:41:04,588 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:04,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:04,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1346743301, now seen corresponding path program 1 times [2023-08-27 06:41:04,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:04,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760240642] [2023-08-27 06:41:04,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:04,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:04,598 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:04,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296097467] [2023-08-27 06:41:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:04,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:04,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:04,599 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:04,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 06:41:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:04,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:41:04,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:04,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:04,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:04,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760240642] [2023-08-27 06:41:04,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:41:04,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296097467] [2023-08-27 06:41:04,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296097467] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:04,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:41:04,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-27 06:41:04,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790342378] [2023-08-27 06:41:04,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:04,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 06:41:04,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:04,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 06:41:04,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-27 06:41:04,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 706 [2023-08-27 06:41:04,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 168 transitions, 1388 flow. Second operand has 11 states, 11 states have (on average 229.0909090909091) internal successors, (2520), 11 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:04,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:04,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 706 [2023-08-27 06:41:04,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:05,452 INFO L124 PetriNetUnfolderBase]: 3252/5491 cut-off events. [2023-08-27 06:41:05,452 INFO L125 PetriNetUnfolderBase]: For 23632/25018 co-relation queries the response was YES. [2023-08-27 06:41:05,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26438 conditions, 5491 events. 3252/5491 cut-off events. For 23632/25018 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 34228 event pairs, 1086 based on Foata normal form. 1515/6734 useless extension candidates. Maximal degree in co-relation 26409. Up to 3377 conditions per place. [2023-08-27 06:41:05,480 INFO L140 encePairwiseOnDemand]: 694/706 looper letters, 254 selfloop transitions, 36 changer transitions 0/295 dead transitions. [2023-08-27 06:41:05,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 295 transitions, 3051 flow [2023-08-27 06:41:05,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:41:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:41:05,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2123 transitions. [2023-08-27 06:41:05,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3341202392193894 [2023-08-27 06:41:05,483 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2123 transitions. [2023-08-27 06:41:05,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2123 transitions. [2023-08-27 06:41:05,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:05,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2123 transitions. [2023-08-27 06:41:05,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 235.88888888888889) internal successors, (2123), 9 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:05,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 706.0) internal successors, (7060), 10 states have internal predecessors, (7060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:05,488 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 706.0) internal successors, (7060), 10 states have internal predecessors, (7060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:05,488 INFO L175 Difference]: Start difference. First operand has 98 places, 168 transitions, 1388 flow. Second operand 9 states and 2123 transitions. [2023-08-27 06:41:05,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 295 transitions, 3051 flow [2023-08-27 06:41:05,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 295 transitions, 2893 flow, removed 54 selfloop flow, removed 6 redundant places. [2023-08-27 06:41:05,545 INFO L231 Difference]: Finished difference. Result has 100 places, 193 transitions, 1733 flow [2023-08-27 06:41:05,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1733, PETRI_PLACES=100, PETRI_TRANSITIONS=193} [2023-08-27 06:41:05,546 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2023-08-27 06:41:05,546 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 193 transitions, 1733 flow [2023-08-27 06:41:05,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 229.0909090909091) internal successors, (2520), 11 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:05,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:05,547 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:05,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-08-27 06:41:05,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 06:41:05,748 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:05,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:05,749 INFO L85 PathProgramCache]: Analyzing trace with hash -162652761, now seen corresponding path program 2 times [2023-08-27 06:41:05,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:05,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62220725] [2023-08-27 06:41:05,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:05,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:05,760 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:05,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389393786] [2023-08-27 06:41:05,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:41:05,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:05,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:05,761 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:05,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-27 06:41:05,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:41:05,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:41:05,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 06:41:05,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 06:41:05,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:41:05,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:05,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62220725] [2023-08-27 06:41:05,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:41:05,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389393786] [2023-08-27 06:41:05,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389393786] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:41:05,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:41:05,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:41:05,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083913794] [2023-08-27 06:41:05,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:41:05,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:41:05,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:05,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:41:05,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 06:41:05,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 706 [2023-08-27 06:41:05,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 193 transitions, 1733 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 06:41:05,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:05,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 706 [2023-08-27 06:41:05,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:06,559 INFO L124 PetriNetUnfolderBase]: 3348/5611 cut-off events. [2023-08-27 06:41:06,559 INFO L125 PetriNetUnfolderBase]: For 21592/22748 co-relation queries the response was YES. [2023-08-27 06:41:06,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27456 conditions, 5611 events. 3348/5611 cut-off events. For 21592/22748 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 34448 event pairs, 816 based on Foata normal form. 1208/6595 useless extension candidates. Maximal degree in co-relation 27428. Up to 3399 conditions per place. [2023-08-27 06:41:06,590 INFO L140 encePairwiseOnDemand]: 701/706 looper letters, 195 selfloop transitions, 23 changer transitions 0/221 dead transitions. [2023-08-27 06:41:06,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 221 transitions, 2379 flow [2023-08-27 06:41:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:41:06,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:41:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1091 transitions. [2023-08-27 06:41:06,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3863314447592068 [2023-08-27 06:41:06,592 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1091 transitions. [2023-08-27 06:41:06,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1091 transitions. [2023-08-27 06:41:06,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:06,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1091 transitions. [2023-08-27 06:41:06,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 272.75) internal successors, (1091), 4 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:06,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 706.0) internal successors, (3530), 5 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:06,594 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 706.0) internal successors, (3530), 5 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:06,594 INFO L175 Difference]: Start difference. First operand has 100 places, 193 transitions, 1733 flow. Second operand 4 states and 1091 transitions. [2023-08-27 06:41:06,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 221 transitions, 2379 flow [2023-08-27 06:41:06,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 221 transitions, 2331 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-27 06:41:06,659 INFO L231 Difference]: Finished difference. Result has 102 places, 193 transitions, 1757 flow [2023-08-27 06:41:06,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1757, PETRI_PLACES=102, PETRI_TRANSITIONS=193} [2023-08-27 06:41:06,659 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2023-08-27 06:41:06,659 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 193 transitions, 1757 flow [2023-08-27 06:41:06,659 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 06:41:06,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:06,659 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:06,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-27 06:41:06,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:06,860 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:06,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:06,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1261378453, now seen corresponding path program 1 times [2023-08-27 06:41:06,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:06,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027012539] [2023-08-27 06:41:06,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:06,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:06,876 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:06,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144390780] [2023-08-27 06:41:06,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:06,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:06,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:06,877 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:06,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-27 06:41:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:07,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:41:07,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 06:41:07,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 06:41:07,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:07,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027012539] [2023-08-27 06:41:07,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:41:07,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144390780] [2023-08-27 06:41:07,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144390780] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:41:07,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:41:07,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-08-27 06:41:07,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984001642] [2023-08-27 06:41:07,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:41:07,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:41:07,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:07,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:41:07,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:41:07,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 706 [2023-08-27 06:41:07,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 193 transitions, 1757 flow. Second operand has 5 states, 5 states have (on average 230.2) internal successors, (1151), 5 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:07,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:07,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 706 [2023-08-27 06:41:07,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:07,646 INFO L124 PetriNetUnfolderBase]: 2952/5125 cut-off events. [2023-08-27 06:41:07,646 INFO L125 PetriNetUnfolderBase]: For 24224/25562 co-relation queries the response was YES. [2023-08-27 06:41:07,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24647 conditions, 5125 events. 2952/5125 cut-off events. For 24224/25562 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 31712 event pairs, 492 based on Foata normal form. 1462/6331 useless extension candidates. Maximal degree in co-relation 24617. Up to 2797 conditions per place. [2023-08-27 06:41:07,675 INFO L140 encePairwiseOnDemand]: 694/706 looper letters, 174 selfloop transitions, 27 changer transitions 0/206 dead transitions. [2023-08-27 06:41:07,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 206 transitions, 2138 flow [2023-08-27 06:41:07,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:41:07,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:41:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1182 transitions. [2023-08-27 06:41:07,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3348441926345609 [2023-08-27 06:41:07,677 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1182 transitions. [2023-08-27 06:41:07,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1182 transitions. [2023-08-27 06:41:07,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:07,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1182 transitions. [2023-08-27 06:41:07,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.4) internal successors, (1182), 5 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:07,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 706.0) internal successors, (4236), 6 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:07,681 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 706.0) internal successors, (4236), 6 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:07,681 INFO L175 Difference]: Start difference. First operand has 102 places, 193 transitions, 1757 flow. Second operand 5 states and 1182 transitions. [2023-08-27 06:41:07,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 206 transitions, 2138 flow [2023-08-27 06:41:07,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 206 transitions, 2108 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 06:41:07,732 INFO L231 Difference]: Finished difference. Result has 106 places, 189 transitions, 1677 flow [2023-08-27 06:41:07,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1677, PETRI_PLACES=106, PETRI_TRANSITIONS=189} [2023-08-27 06:41:07,733 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 52 predicate places. [2023-08-27 06:41:07,733 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 189 transitions, 1677 flow [2023-08-27 06:41:07,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.2) internal successors, (1151), 5 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:07,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:07,733 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 06:41:07,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-27 06:41:07,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-27 06:41:07,934 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:07,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:07,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1074226076, now seen corresponding path program 1 times [2023-08-27 06:41:07,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:07,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802975190] [2023-08-27 06:41:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:07,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:07,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:07,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716823851] [2023-08-27 06:41:07,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:07,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:07,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:07,948 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:07,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-27 06:41:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:08,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:41:08,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:08,143 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 06:41:08,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:08,163 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 06:41:08,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:08,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802975190] [2023-08-27 06:41:08,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:41:08,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716823851] [2023-08-27 06:41:08,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716823851] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:08,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:41:08,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-08-27 06:41:08,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286633758] [2023-08-27 06:41:08,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:08,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:41:08,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:08,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:41:08,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:41:08,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 706 [2023-08-27 06:41:08,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 189 transitions, 1677 flow. Second operand has 6 states, 6 states have (on average 261.3333333333333) internal successors, (1568), 6 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:08,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:08,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 706 [2023-08-27 06:41:08,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:08,770 INFO L124 PetriNetUnfolderBase]: 3008/5273 cut-off events. [2023-08-27 06:41:08,770 INFO L125 PetriNetUnfolderBase]: For 24233/25389 co-relation queries the response was YES. [2023-08-27 06:41:08,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26014 conditions, 5273 events. 3008/5273 cut-off events. For 24233/25389 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 33000 event pairs, 330 based on Foata normal form. 1276/6427 useless extension candidates. Maximal degree in co-relation 25982. Up to 2741 conditions per place. [2023-08-27 06:41:08,794 INFO L140 encePairwiseOnDemand]: 699/706 looper letters, 191 selfloop transitions, 38 changer transitions 0/232 dead transitions. [2023-08-27 06:41:08,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 232 transitions, 2463 flow [2023-08-27 06:41:08,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:41:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:41:08,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1859 transitions. [2023-08-27 06:41:08,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761634965600971 [2023-08-27 06:41:08,797 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1859 transitions. [2023-08-27 06:41:08,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1859 transitions. [2023-08-27 06:41:08,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:08,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1859 transitions. [2023-08-27 06:41:08,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 265.57142857142856) internal successors, (1859), 7 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:08,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 706.0) internal successors, (5648), 8 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:08,801 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 706.0) internal successors, (5648), 8 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:08,801 INFO L175 Difference]: Start difference. First operand has 106 places, 189 transitions, 1677 flow. Second operand 7 states and 1859 transitions. [2023-08-27 06:41:08,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 232 transitions, 2463 flow [2023-08-27 06:41:08,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 232 transitions, 2417 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-27 06:41:08,854 INFO L231 Difference]: Finished difference. Result has 111 places, 185 transitions, 1665 flow [2023-08-27 06:41:08,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1665, PETRI_PLACES=111, PETRI_TRANSITIONS=185} [2023-08-27 06:41:08,854 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2023-08-27 06:41:08,854 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 185 transitions, 1665 flow [2023-08-27 06:41:08,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 261.3333333333333) internal successors, (1568), 6 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:08,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:08,855 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:08,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-08-27 06:41:09,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:09,055 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:09,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1690451686, now seen corresponding path program 1 times [2023-08-27 06:41:09,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:09,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649619998] [2023-08-27 06:41:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:09,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:09,076 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:09,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530525809] [2023-08-27 06:41:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:09,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:09,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:09,077 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:09,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-27 06:41:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:09,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:41:09,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 06:41:09,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 06:41:09,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:09,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649619998] [2023-08-27 06:41:09,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:41:09,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530525809] [2023-08-27 06:41:09,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530525809] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:09,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:41:09,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-27 06:41:09,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084178467] [2023-08-27 06:41:09,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:09,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:41:09,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:09,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:41:09,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:41:09,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 706 [2023-08-27 06:41:09,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 185 transitions, 1665 flow. Second operand has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:09,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:09,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 706 [2023-08-27 06:41:09,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:10,206 INFO L124 PetriNetUnfolderBase]: 4850/8247 cut-off events. [2023-08-27 06:41:10,206 INFO L125 PetriNetUnfolderBase]: For 39684/41664 co-relation queries the response was YES. [2023-08-27 06:41:10,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40739 conditions, 8247 events. 4850/8247 cut-off events. For 39684/41664 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 51201 event pairs, 789 based on Foata normal form. 2238/10245 useless extension candidates. Maximal degree in co-relation 40706. Up to 4605 conditions per place. [2023-08-27 06:41:10,254 INFO L140 encePairwiseOnDemand]: 702/706 looper letters, 258 selfloop transitions, 42 changer transitions 0/305 dead transitions. [2023-08-27 06:41:10,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 305 transitions, 3421 flow [2023-08-27 06:41:10,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:41:10,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:41:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1807 transitions. [2023-08-27 06:41:10,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42658168083097264 [2023-08-27 06:41:10,256 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1807 transitions. [2023-08-27 06:41:10,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1807 transitions. [2023-08-27 06:41:10,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:10,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1807 transitions. [2023-08-27 06:41:10,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 301.1666666666667) internal successors, (1807), 6 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:10,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:10,261 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:10,261 INFO L175 Difference]: Start difference. First operand has 111 places, 185 transitions, 1665 flow. Second operand 6 states and 1807 transitions. [2023-08-27 06:41:10,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 305 transitions, 3421 flow [2023-08-27 06:41:10,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 305 transitions, 3260 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-08-27 06:41:10,441 INFO L231 Difference]: Finished difference. Result has 114 places, 209 transitions, 2026 flow [2023-08-27 06:41:10,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2026, PETRI_PLACES=114, PETRI_TRANSITIONS=209} [2023-08-27 06:41:10,442 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2023-08-27 06:41:10,442 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 209 transitions, 2026 flow [2023-08-27 06:41:10,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:10,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:10,442 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:10,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-27 06:41:10,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:10,649 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:10,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:10,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1611346859, now seen corresponding path program 1 times [2023-08-27 06:41:10,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:10,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572096103] [2023-08-27 06:41:10,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:10,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:10,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:10,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258740616] [2023-08-27 06:41:10,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:10,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:10,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:10,669 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:10,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-27 06:41:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:10,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 06:41:10,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 06:41:11,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 06:41:11,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:11,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572096103] [2023-08-27 06:41:11,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:41:11,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258740616] [2023-08-27 06:41:11,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258740616] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:41:11,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:41:11,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2023-08-27 06:41:11,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082824124] [2023-08-27 06:41:11,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:41:11,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 06:41:11,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:11,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 06:41:11,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-08-27 06:41:11,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 706 [2023-08-27 06:41:11,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 209 transitions, 2026 flow. Second operand has 8 states, 8 states have (on average 214.375) internal successors, (1715), 8 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:11,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:11,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 706 [2023-08-27 06:41:11,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:12,369 INFO L124 PetriNetUnfolderBase]: 5032/8617 cut-off events. [2023-08-27 06:41:12,369 INFO L125 PetriNetUnfolderBase]: For 43878/46144 co-relation queries the response was YES. [2023-08-27 06:41:12,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44289 conditions, 8617 events. 5032/8617 cut-off events. For 43878/46144 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 54820 event pairs, 2586 based on Foata normal form. 2220/10597 useless extension candidates. Maximal degree in co-relation 44254. Up to 8172 conditions per place. [2023-08-27 06:41:12,423 INFO L140 encePairwiseOnDemand]: 698/706 looper letters, 224 selfloop transitions, 28 changer transitions 0/257 dead transitions. [2023-08-27 06:41:12,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 257 transitions, 2952 flow [2023-08-27 06:41:12,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:41:12,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:41:12,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1754 transitions. [2023-08-27 06:41:12,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31055240793201133 [2023-08-27 06:41:12,425 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1754 transitions. [2023-08-27 06:41:12,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1754 transitions. [2023-08-27 06:41:12,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:12,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1754 transitions. [2023-08-27 06:41:12,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 219.25) internal successors, (1754), 8 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:12,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 706.0) internal successors, (6354), 9 states have internal predecessors, (6354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:12,429 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 706.0) internal successors, (6354), 9 states have internal predecessors, (6354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:12,429 INFO L175 Difference]: Start difference. First operand has 114 places, 209 transitions, 2026 flow. Second operand 8 states and 1754 transitions. [2023-08-27 06:41:12,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 257 transitions, 2952 flow [2023-08-27 06:41:12,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 257 transitions, 2936 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:41:12,560 INFO L231 Difference]: Finished difference. Result has 122 places, 220 transitions, 2214 flow [2023-08-27 06:41:12,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2214, PETRI_PLACES=122, PETRI_TRANSITIONS=220} [2023-08-27 06:41:12,561 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2023-08-27 06:41:12,561 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 220 transitions, 2214 flow [2023-08-27 06:41:12,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 214.375) internal successors, (1715), 8 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:12,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:12,561 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:12,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-08-27 06:41:12,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-08-27 06:41:12,762 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:12,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:12,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2054847280, now seen corresponding path program 1 times [2023-08-27 06:41:12,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:12,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703206679] [2023-08-27 06:41:12,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:12,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:12,774 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:12,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411643777] [2023-08-27 06:41:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:12,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:12,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:12,775 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:12,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-27 06:41:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:12,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:41:12,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:13,010 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-27 06:41:13,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-27 06:41:13,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703206679] [2023-08-27 06:41:13,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:41:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411643777] [2023-08-27 06:41:13,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411643777] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:41:13,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:41:13,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-27 06:41:13,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22252953] [2023-08-27 06:41:13,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:41:13,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:41:13,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:13,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:41:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:41:13,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 706 [2023-08-27 06:41:13,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 220 transitions, 2214 flow. Second operand has 5 states, 5 states have (on average 260.2) internal successors, (1301), 5 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:13,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:13,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 706 [2023-08-27 06:41:13,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:13,759 INFO L124 PetriNetUnfolderBase]: 3588/6407 cut-off events. [2023-08-27 06:41:13,759 INFO L125 PetriNetUnfolderBase]: For 32948/34058 co-relation queries the response was YES. [2023-08-27 06:41:13,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33428 conditions, 6407 events. 3588/6407 cut-off events. For 32948/34058 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 40403 event pairs, 1548 based on Foata normal form. 1056/7254 useless extension candidates. Maximal degree in co-relation 33390. Up to 5646 conditions per place. [2023-08-27 06:41:13,869 INFO L140 encePairwiseOnDemand]: 701/706 looper letters, 227 selfloop transitions, 15 changer transitions 0/248 dead transitions. [2023-08-27 06:41:13,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 248 transitions, 2911 flow [2023-08-27 06:41:13,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:41:13,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:41:13,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1340 transitions. [2023-08-27 06:41:13,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37960339943342775 [2023-08-27 06:41:13,871 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1340 transitions. [2023-08-27 06:41:13,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1340 transitions. [2023-08-27 06:41:13,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:13,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1340 transitions. [2023-08-27 06:41:13,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 268.0) internal successors, (1340), 5 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:13,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 706.0) internal successors, (4236), 6 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:13,874 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 706.0) internal successors, (4236), 6 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:13,874 INFO L175 Difference]: Start difference. First operand has 122 places, 220 transitions, 2214 flow. Second operand 5 states and 1340 transitions. [2023-08-27 06:41:13,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 248 transitions, 2911 flow [2023-08-27 06:41:13,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 248 transitions, 2885 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-27 06:41:13,954 INFO L231 Difference]: Finished difference. Result has 120 places, 213 transitions, 2129 flow [2023-08-27 06:41:13,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2129, PETRI_PLACES=120, PETRI_TRANSITIONS=213} [2023-08-27 06:41:13,955 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2023-08-27 06:41:13,955 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 213 transitions, 2129 flow [2023-08-27 06:41:13,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 260.2) internal successors, (1301), 5 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:13,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:13,955 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:13,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-08-27 06:41:14,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-27 06:41:14,156 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:14,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:14,156 INFO L85 PathProgramCache]: Analyzing trace with hash -977034037, now seen corresponding path program 1 times [2023-08-27 06:41:14,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:14,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461174977] [2023-08-27 06:41:14,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:14,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:14,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:14,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485723485] [2023-08-27 06:41:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:14,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:14,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:14,177 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:14,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-27 06:41:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:14,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:41:14,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 06:41:14,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 06:41:14,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:14,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461174977] [2023-08-27 06:41:14,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:41:14,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485723485] [2023-08-27 06:41:14,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485723485] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:14,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:41:14,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-27 06:41:14,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116039897] [2023-08-27 06:41:14,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:14,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 06:41:14,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:14,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 06:41:14,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-08-27 06:41:14,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 706 [2023-08-27 06:41:14,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 213 transitions, 2129 flow. Second operand has 11 states, 11 states have (on average 229.0) internal successors, (2519), 11 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:14,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:14,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 706 [2023-08-27 06:41:14,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:15,753 INFO L124 PetriNetUnfolderBase]: 4308/7179 cut-off events. [2023-08-27 06:41:15,753 INFO L125 PetriNetUnfolderBase]: For 34374/35540 co-relation queries the response was YES. [2023-08-27 06:41:15,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36748 conditions, 7179 events. 4308/7179 cut-off events. For 34374/35540 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 41955 event pairs, 258 based on Foata normal form. 1150/8311 useless extension candidates. Maximal degree in co-relation 36712. Up to 3925 conditions per place. [2023-08-27 06:41:15,791 INFO L140 encePairwiseOnDemand]: 698/706 looper letters, 184 selfloop transitions, 76 changer transitions 0/263 dead transitions. [2023-08-27 06:41:15,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 263 transitions, 3082 flow [2023-08-27 06:41:15,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:41:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:41:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1853 transitions. [2023-08-27 06:41:15,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32808073654390935 [2023-08-27 06:41:15,794 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1853 transitions. [2023-08-27 06:41:15,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1853 transitions. [2023-08-27 06:41:15,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:15,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1853 transitions. [2023-08-27 06:41:15,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 231.625) internal successors, (1853), 8 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:15,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 706.0) internal successors, (6354), 9 states have internal predecessors, (6354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:15,799 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 706.0) internal successors, (6354), 9 states have internal predecessors, (6354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:15,799 INFO L175 Difference]: Start difference. First operand has 120 places, 213 transitions, 2129 flow. Second operand 8 states and 1853 transitions. [2023-08-27 06:41:15,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 263 transitions, 3082 flow [2023-08-27 06:41:15,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 263 transitions, 3078 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 06:41:15,912 INFO L231 Difference]: Finished difference. Result has 126 places, 210 transitions, 2250 flow [2023-08-27 06:41:15,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2250, PETRI_PLACES=126, PETRI_TRANSITIONS=210} [2023-08-27 06:41:15,912 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 72 predicate places. [2023-08-27 06:41:15,912 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 210 transitions, 2250 flow [2023-08-27 06:41:15,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 229.0) internal successors, (2519), 11 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:15,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:15,913 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:15,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-08-27 06:41:16,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-27 06:41:16,113 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:16,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:16,113 INFO L85 PathProgramCache]: Analyzing trace with hash -977033959, now seen corresponding path program 1 times [2023-08-27 06:41:16,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:16,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033933950] [2023-08-27 06:41:16,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:16,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:16,125 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:16,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770584470] [2023-08-27 06:41:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:16,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:16,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:16,127 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:16,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-27 06:41:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:16,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 06:41:16,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:41:16,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 06:41:16,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:16,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033933950] [2023-08-27 06:41:16,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:41:16,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770584470] [2023-08-27 06:41:16,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770584470] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:16,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:41:16,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-27 06:41:16,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733417749] [2023-08-27 06:41:16,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:16,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 06:41:16,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:16,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 06:41:16,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-27 06:41:16,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 706 [2023-08-27 06:41:16,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 210 transitions, 2250 flow. Second operand has 12 states, 12 states have (on average 223.25) internal successors, (2679), 12 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:16,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:16,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 706 [2023-08-27 06:41:16,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:19,104 INFO L124 PetriNetUnfolderBase]: 4986/8275 cut-off events. [2023-08-27 06:41:19,104 INFO L125 PetriNetUnfolderBase]: For 42990/44316 co-relation queries the response was YES. [2023-08-27 06:41:19,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42743 conditions, 8275 events. 4986/8275 cut-off events. For 42990/44316 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 48783 event pairs, 296 based on Foata normal form. 1730/9985 useless extension candidates. Maximal degree in co-relation 42706. Up to 4523 conditions per place. [2023-08-27 06:41:19,160 INFO L140 encePairwiseOnDemand]: 693/706 looper letters, 276 selfloop transitions, 138 changer transitions 0/417 dead transitions. [2023-08-27 06:41:19,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 417 transitions, 4756 flow [2023-08-27 06:41:19,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 06:41:19,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 06:41:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3641 transitions. [2023-08-27 06:41:19,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32232648725212465 [2023-08-27 06:41:19,163 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3641 transitions. [2023-08-27 06:41:19,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3641 transitions. [2023-08-27 06:41:19,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:19,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3641 transitions. [2023-08-27 06:41:19,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 227.5625) internal successors, (3641), 16 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:19,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 706.0) internal successors, (12002), 17 states have internal predecessors, (12002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:19,174 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 706.0) internal successors, (12002), 17 states have internal predecessors, (12002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:19,174 INFO L175 Difference]: Start difference. First operand has 126 places, 210 transitions, 2250 flow. Second operand 16 states and 3641 transitions. [2023-08-27 06:41:19,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 417 transitions, 4756 flow [2023-08-27 06:41:19,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 417 transitions, 4642 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-27 06:41:19,328 INFO L231 Difference]: Finished difference. Result has 139 places, 242 transitions, 2874 flow [2023-08-27 06:41:19,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2874, PETRI_PLACES=139, PETRI_TRANSITIONS=242} [2023-08-27 06:41:19,328 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 85 predicate places. [2023-08-27 06:41:19,329 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 242 transitions, 2874 flow [2023-08-27 06:41:19,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 223.25) internal successors, (2679), 12 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:19,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:19,329 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, 1] [2023-08-27 06:41:19,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-27 06:41:19,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:19,530 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:19,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:19,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1217653330, now seen corresponding path program 1 times [2023-08-27 06:41:19,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:19,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832621444] [2023-08-27 06:41:19,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:19,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:19,540 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:19,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391188159] [2023-08-27 06:41:19,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:19,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:19,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:19,541 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:19,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-27 06:41:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:19,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 06:41:19,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 06:41:19,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:41:19,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:19,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832621444] [2023-08-27 06:41:19,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:41:19,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391188159] [2023-08-27 06:41:19,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391188159] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:41:19,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:41:19,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:41:19,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825225449] [2023-08-27 06:41:19,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:41:19,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:41:19,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:19,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:41:19,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:41:19,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 706 [2023-08-27 06:41:19,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 242 transitions, 2874 flow. Second operand has 6 states, 6 states have (on average 215.66666666666666) internal successors, (1294), 6 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:19,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:19,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 706 [2023-08-27 06:41:19,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:20,802 INFO L124 PetriNetUnfolderBase]: 4617/7620 cut-off events. [2023-08-27 06:41:20,803 INFO L125 PetriNetUnfolderBase]: For 43444/44476 co-relation queries the response was YES. [2023-08-27 06:41:20,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41661 conditions, 7620 events. 4617/7620 cut-off events. For 43444/44476 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 44154 event pairs, 2118 based on Foata normal form. 993/8581 useless extension candidates. Maximal degree in co-relation 41622. Up to 7573 conditions per place. [2023-08-27 06:41:20,855 INFO L140 encePairwiseOnDemand]: 700/706 looper letters, 219 selfloop transitions, 2 changer transitions 3/228 dead transitions. [2023-08-27 06:41:20,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 228 transitions, 3107 flow [2023-08-27 06:41:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:41:20,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:41:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1308 transitions. [2023-08-27 06:41:20,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3087818696883853 [2023-08-27 06:41:20,857 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1308 transitions. [2023-08-27 06:41:20,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1308 transitions. [2023-08-27 06:41:20,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:20,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1308 transitions. [2023-08-27 06:41:20,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 218.0) internal successors, (1308), 6 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:20,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:20,860 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 706.0) internal successors, (4942), 7 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:20,860 INFO L175 Difference]: Start difference. First operand has 139 places, 242 transitions, 2874 flow. Second operand 6 states and 1308 transitions. [2023-08-27 06:41:20,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 228 transitions, 3107 flow [2023-08-27 06:41:21,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 228 transitions, 2850 flow, removed 82 selfloop flow, removed 9 redundant places. [2023-08-27 06:41:21,027 INFO L231 Difference]: Finished difference. Result has 132 places, 225 transitions, 2370 flow [2023-08-27 06:41:21,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=2402, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2370, PETRI_PLACES=132, PETRI_TRANSITIONS=225} [2023-08-27 06:41:21,027 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 78 predicate places. [2023-08-27 06:41:21,027 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 225 transitions, 2370 flow [2023-08-27 06:41:21,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 215.66666666666666) internal successors, (1294), 6 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:21,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:21,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:21,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-27 06:41:21,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-27 06:41:21,228 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:21,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:21,228 INFO L85 PathProgramCache]: Analyzing trace with hash 433938850, now seen corresponding path program 1 times [2023-08-27 06:41:21,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:21,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946483409] [2023-08-27 06:41:21,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:21,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:21,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:21,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215586305] [2023-08-27 06:41:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:21,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:21,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:21,241 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:21,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-27 06:41:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:21,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:41:21,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 06:41:21,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 06:41:21,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:21,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946483409] [2023-08-27 06:41:21,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:41:21,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215586305] [2023-08-27 06:41:21,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215586305] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:41:21,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:41:21,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-27 06:41:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724473976] [2023-08-27 06:41:21,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:41:21,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:41:21,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:41:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:41:21,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 706 [2023-08-27 06:41:21,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 225 transitions, 2370 flow. Second operand has 5 states, 5 states have (on average 255.8) internal successors, (1279), 5 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:21,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:21,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 706 [2023-08-27 06:41:21,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:22,276 INFO L124 PetriNetUnfolderBase]: 3849/7063 cut-off events. [2023-08-27 06:41:22,277 INFO L125 PetriNetUnfolderBase]: For 36542/36813 co-relation queries the response was YES. [2023-08-27 06:41:22,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37296 conditions, 7063 events. 3849/7063 cut-off events. For 36542/36813 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 44032 event pairs, 982 based on Foata normal form. 353/7404 useless extension candidates. Maximal degree in co-relation 37261. Up to 4337 conditions per place. [2023-08-27 06:41:22,331 INFO L140 encePairwiseOnDemand]: 700/706 looper letters, 261 selfloop transitions, 11 changer transitions 0/275 dead transitions. [2023-08-27 06:41:22,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 275 transitions, 3604 flow [2023-08-27 06:41:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:41:22,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:41:22,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1300 transitions. [2023-08-27 06:41:22,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36827195467422097 [2023-08-27 06:41:22,333 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1300 transitions. [2023-08-27 06:41:22,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1300 transitions. [2023-08-27 06:41:22,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:22,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1300 transitions. [2023-08-27 06:41:22,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:22,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 706.0) internal successors, (4236), 6 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:22,336 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 706.0) internal successors, (4236), 6 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:22,336 INFO L175 Difference]: Start difference. First operand has 132 places, 225 transitions, 2370 flow. Second operand 5 states and 1300 transitions. [2023-08-27 06:41:22,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 275 transitions, 3604 flow [2023-08-27 06:41:22,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 275 transitions, 3540 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-08-27 06:41:22,476 INFO L231 Difference]: Finished difference. Result has 124 places, 223 transitions, 2320 flow [2023-08-27 06:41:22,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=2298, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2320, PETRI_PLACES=124, PETRI_TRANSITIONS=223} [2023-08-27 06:41:22,476 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2023-08-27 06:41:22,476 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 223 transitions, 2320 flow [2023-08-27 06:41:22,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.8) internal successors, (1279), 5 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:22,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:22,477 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:22,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-27 06:41:22,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-27 06:41:22,678 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:22,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:22,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2057945825, now seen corresponding path program 2 times [2023-08-27 06:41:22,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:22,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675211647] [2023-08-27 06:41:22,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:22,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:22,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:22,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666296395] [2023-08-27 06:41:22,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:41:22,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:22,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:22,694 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:22,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-27 06:41:22,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:41:22,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:41:22,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:41:22,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-08-27 06:41:23,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-08-27 06:41:23,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:23,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675211647] [2023-08-27 06:41:23,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 06:41:23,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666296395] [2023-08-27 06:41:23,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666296395] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:23,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:41:23,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-27 06:41:23,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810192763] [2023-08-27 06:41:23,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:23,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:41:23,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:23,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:41:23,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:41:23,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 706 [2023-08-27 06:41:23,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 223 transitions, 2320 flow. Second operand has 6 states, 6 states have (on average 250.66666666666666) internal successors, (1504), 6 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:23,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:23,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 706 [2023-08-27 06:41:23,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:24,688 INFO L124 PetriNetUnfolderBase]: 4179/7107 cut-off events. [2023-08-27 06:41:24,688 INFO L125 PetriNetUnfolderBase]: For 34126/34902 co-relation queries the response was YES. [2023-08-27 06:41:24,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37196 conditions, 7107 events. 4179/7107 cut-off events. For 34126/34902 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 41050 event pairs, 438 based on Foata normal form. 912/8015 useless extension candidates. Maximal degree in co-relation 37163. Up to 5062 conditions per place. [2023-08-27 06:41:24,731 INFO L140 encePairwiseOnDemand]: 698/706 looper letters, 190 selfloop transitions, 51 changer transitions 0/243 dead transitions. [2023-08-27 06:41:24,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 243 transitions, 2929 flow [2023-08-27 06:41:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:41:24,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:41:24,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1265 transitions. [2023-08-27 06:41:24,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358356940509915 [2023-08-27 06:41:24,733 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1265 transitions. [2023-08-27 06:41:24,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1265 transitions. [2023-08-27 06:41:24,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:24,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1265 transitions. [2023-08-27 06:41:24,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:24,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 706.0) internal successors, (4236), 6 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:24,736 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 706.0) internal successors, (4236), 6 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:24,736 INFO L175 Difference]: Start difference. First operand has 124 places, 223 transitions, 2320 flow. Second operand 5 states and 1265 transitions. [2023-08-27 06:41:24,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 243 transitions, 2929 flow [2023-08-27 06:41:24,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 243 transitions, 2831 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-27 06:41:24,869 INFO L231 Difference]: Finished difference. Result has 117 places, 215 transitions, 2273 flow [2023-08-27 06:41:24,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=706, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2273, PETRI_PLACES=117, PETRI_TRANSITIONS=215} [2023-08-27 06:41:24,870 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 63 predicate places. [2023-08-27 06:41:24,870 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 215 transitions, 2273 flow [2023-08-27 06:41:24,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 250.66666666666666) internal successors, (1504), 6 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:24,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:24,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:24,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-08-27 06:41:25,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-27 06:41:25,071 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-27 06:41:25,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:25,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1693691551, now seen corresponding path program 1 times [2023-08-27 06:41:25,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:25,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032718181] [2023-08-27 06:41:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:25,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:25,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 06:41:25,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866821310] [2023-08-27 06:41:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:25,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:25,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:25,085 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:25,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-27 06:41:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:25,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 95 conjunts are in the unsatisfiable core [2023-08-27 06:41:25,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:25,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:25,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:25,479 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-27 06:41:25,479 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 16 [2023-08-27 06:41:25,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:25,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:25,578 INFO L322 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2023-08-27 06:41:25,578 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 45 [2023-08-27 06:41:25,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:25,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:25,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:25,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:25,693 INFO L322 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-08-27 06:41:25,694 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 49 [2023-08-27 06:41:25,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:25,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:25,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:25,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:25,828 INFO L322 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2023-08-27 06:41:25,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 39 [2023-08-27 06:41:26,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 06:41:26,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:26,101 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2023-08-27 06:41:26,374 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-08-27 06:41:26,391 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-08-27 06:41:26,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:26,467 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 23 [2023-08-27 06:41:26,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 06:41:26,473 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-08-27 06:41:26,842 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-27 06:41:26,843 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 65 [2023-08-27 06:41:26,862 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2023-08-27 06:41:26,868 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 49 [2023-08-27 06:41:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 06:41:27,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:29,609 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:41:29,609 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 322 treesize of output 290 [2023-08-27 06:41:29,622 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 137 [2023-08-27 06:42:10,969 WARN L234 SmtUtils]: Spent 35.16s on a formula simplification that was a NOOP. DAG size: 96 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 06:43:17,752 WARN L234 SmtUtils]: Spent 58.04s on a formula simplification. DAG size of input: 92 DAG size of output: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 06:43:40,649 WARN L234 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 06:43:40,845 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3508 (Array Int Int)) (v_ArrVal_3509 (Array Int Int)) (v_~a~0_96 Int) (v_arrayElimCell_27 Int) (v_~b~0_80 Int) (v_ArrVal_3507 (Array Int Int))) (or (< v_~b~0_80 0) (<= c_~N~0 v_~a~0_96) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3508))) (let ((.cse2 (select (select .cse1 c_~B~0.base) c_~B~0.offset))) (let ((.cse0 (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3507))) (store .cse4 .cse2 (store (select .cse4 .cse2) v_arrayElimCell_27 (select (select .cse4 c_~F~0.base) c_~F~0.offset))))) (.cse3 (* v_~b~0_80 4))) (= (select (select .cse0 (select (select (store .cse1 .cse2 v_ArrVal_3509) c_~B~0.base) (+ (* v_~a~0_96 4) c_~B~0.offset))) (+ .cse3 v_arrayElimCell_27)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset (* (* v_~a~0_96 c_~M~0) 4) .cse3)))))) (< v_~a~0_96 0) (<= c_~M~0 v_~b~0_80))) (forall ((v_ArrVal_3508 (Array Int Int)) (v_ArrVal_3509 (Array Int Int)) (v_arrayElimCell_28 Int) (v_~a~0_96 Int) (v_~b~0_80 Int) (v_arrayElimCell_26 Int) (v_ArrVal_3507 (Array Int Int))) (or (< v_~b~0_80 0) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3508))) (let ((.cse7 (select (select .cse6 c_~B~0.base) c_~B~0.offset))) (let ((.cse5 (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3507))) (store .cse9 .cse7 (store (select .cse9 .cse7) v_arrayElimCell_26 (select (select .cse9 c_~F~0.base) c_~F~0.offset))))) (.cse8 (* v_~b~0_80 4))) (= (select (select .cse5 (select (select (store .cse6 .cse7 v_ArrVal_3509) c_~B~0.base) (+ (* v_~a~0_96 4) c_~B~0.offset))) (+ .cse8 v_arrayElimCell_28)) (select (select .cse5 c_~A~0.base) (+ c_~A~0.offset (* (* v_~a~0_96 c_~M~0) 4) .cse8)))))) (<= c_~N~0 v_~a~0_96) (= v_~a~0_96 0) (< v_~a~0_96 0) (<= c_~M~0 v_~b~0_80))) (forall ((v_ArrVal_3508 (Array Int Int)) (v_ArrVal_3507 (Array Int Int))) (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3508))) (let ((.cse10 (select (select .cse12 c_~B~0.base) c_~B~0.offset))) (or (not (= .cse10 c_~B~0.base)) (forall ((v_ArrVal_3509 (Array Int Int)) (v_arrayElimCell_28 Int) (v_~a~0_96 Int) (v_arrayElimCell_27 Int) (v_~b~0_80 Int)) (or (< v_~b~0_80 0) (<= c_~N~0 v_~a~0_96) (< v_~a~0_96 0) (let ((.cse11 (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3507))) (store .cse14 .cse10 (store (select .cse14 .cse10) v_arrayElimCell_27 (select (select .cse14 c_~F~0.base) c_~F~0.offset))))) (.cse13 (* v_~b~0_80 4))) (= (select (select .cse11 (select (select (store .cse12 .cse10 v_ArrVal_3509) c_~B~0.base) (+ (* v_~a~0_96 4) c_~B~0.offset))) (+ .cse13 v_arrayElimCell_28)) (select (select .cse11 c_~A~0.base) (+ c_~A~0.offset (* (* v_~a~0_96 c_~M~0) 4) .cse13)))) (<= c_~M~0 v_~b~0_80)))))))) is different from false [2023-08-27 06:43:40,974 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_int| c_~A~0.base)) (.cse6 (* c_thread1Thread1of1ForFork0_~i~0 4))) (and (forall ((~A~0.offset Int) (v_ArrVal_3508 (Array Int Int)) (v_ArrVal_3505 (Array Int Int)) (v_ArrVal_3507 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_$Pointer$.base| c_~A~0.base v_ArrVal_3505) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3508))) (let ((.cse0 (select (select .cse3 c_~B~0.base) c_~B~0.offset))) (or (not (= .cse0 c_~B~0.base)) (forall ((v_ArrVal_3509 (Array Int Int)) (v_arrayElimCell_28 Int) (v_~a~0_96 Int) (v_arrayElimCell_27 Int) (v_~b~0_80 Int)) (or (< v_~b~0_80 0) (let ((.cse1 (let ((.cse4 (store (store |c_#memory_int| c_~A~0.base (store .cse5 (+ ~A~0.offset .cse6) |c_thread1Thread1of1ForFork0_#t~mem2|)) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3507))) (store .cse4 .cse0 (store (select .cse4 .cse0) v_arrayElimCell_27 (select (select .cse4 c_~F~0.base) c_~F~0.offset))))) (.cse2 (* v_~b~0_80 4))) (= (select (select .cse1 c_~A~0.base) (+ (* (* v_~a~0_96 c_~M~0) 4) .cse2 ~A~0.offset)) (select (select .cse1 (select (select (store .cse3 .cse0 v_ArrVal_3509) c_~B~0.base) (+ (* v_~a~0_96 4) c_~B~0.offset))) (+ .cse2 v_arrayElimCell_28)))) (<= c_~N~0 v_~a~0_96) (< v_~a~0_96 0) (<= c_~M~0 v_~b~0_80))))))) (forall ((~A~0.offset Int) (v_ArrVal_3508 (Array Int Int)) (v_ArrVal_3509 (Array Int Int)) (v_~a~0_96 Int) (v_arrayElimCell_27 Int) (v_~b~0_80 Int) (v_ArrVal_3505 (Array Int Int)) (v_ArrVal_3507 (Array Int Int))) (or (< v_~b~0_80 0) (let ((.cse9 (store (store |c_#memory_$Pointer$.base| c_~A~0.base v_ArrVal_3505) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3508))) (let ((.cse10 (select (select .cse9 c_~B~0.base) c_~B~0.offset))) (let ((.cse7 (let ((.cse11 (store (store |c_#memory_int| c_~A~0.base (store .cse5 (+ ~A~0.offset .cse6) |c_thread1Thread1of1ForFork0_#t~mem2|)) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3507))) (store .cse11 .cse10 (store (select .cse11 .cse10) v_arrayElimCell_27 (select (select .cse11 c_~F~0.base) c_~F~0.offset))))) (.cse8 (* v_~b~0_80 4))) (= (select (select .cse7 c_~A~0.base) (+ (* (* v_~a~0_96 c_~M~0) 4) .cse8 ~A~0.offset)) (select (select .cse7 (select (select (store .cse9 .cse10 v_ArrVal_3509) c_~B~0.base) (+ (* v_~a~0_96 4) c_~B~0.offset))) (+ .cse8 v_arrayElimCell_27)))))) (<= c_~N~0 v_~a~0_96) (< v_~a~0_96 0) (<= c_~M~0 v_~b~0_80))) (forall ((~A~0.offset Int) (v_ArrVal_3508 (Array Int Int)) (v_ArrVal_3509 (Array Int Int)) (v_arrayElimCell_28 Int) (v_~a~0_96 Int) (v_~b~0_80 Int) (v_arrayElimCell_26 Int) (v_ArrVal_3505 (Array Int Int)) (v_ArrVal_3507 (Array Int Int))) (or (< v_~b~0_80 0) (let ((.cse13 (store (store |c_#memory_$Pointer$.base| c_~A~0.base v_ArrVal_3505) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3508))) (let ((.cse14 (select (select .cse13 c_~B~0.base) c_~B~0.offset))) (let ((.cse12 (let ((.cse16 (store (store |c_#memory_int| c_~A~0.base (store .cse5 (+ ~A~0.offset .cse6) |c_thread1Thread1of1ForFork0_#t~mem2|)) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3507))) (store .cse16 .cse14 (store (select .cse16 .cse14) v_arrayElimCell_26 (select (select .cse16 c_~F~0.base) c_~F~0.offset))))) (.cse15 (* v_~b~0_80 4))) (= (select (select .cse12 (select (select (store .cse13 .cse14 v_ArrVal_3509) c_~B~0.base) (+ (* v_~a~0_96 4) c_~B~0.offset))) (+ .cse15 v_arrayElimCell_28)) (select (select .cse12 c_~A~0.base) (+ (* (* v_~a~0_96 c_~M~0) 4) .cse15 ~A~0.offset)))))) (<= c_~N~0 v_~a~0_96) (= v_~a~0_96 0) (< v_~a~0_96 0) (<= c_~M~0 v_~b~0_80))))) is different from false [2023-08-27 06:43:41,029 INFO L322 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2023-08-27 06:43:41,030 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 253 treesize of output 158 [2023-08-27 06:43:41,096 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:43:41,096 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 11434 treesize of output 9129 [2023-08-27 06:43:41,293 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 06:43:41,294 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 5674 treesize of output 4905 Received shutdown request... [2023-08-27 06:53:54,403 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 06:53:54,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONASSERT (38 of 39 remaining) [2023-08-27 06:53:54,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-08-27 06:53:54,436 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 06:53:54,436 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 06:53:54,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-08-27 06:53:54,605 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. [2023-08-27 06:53:54,607 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2023-08-27 06:53:54,607 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2023-08-27 06:53:54,607 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2023-08-27 06:53:54,607 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2023-08-27 06:53:54,607 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2023-08-27 06:53:54,607 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2023-08-27 06:53:54,607 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2023-08-27 06:53:54,607 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2023-08-27 06:53:54,607 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2023-08-27 06:53:54,607 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2023-08-27 06:53:54,607 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2023-08-27 06:53:54,607 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2023-08-27 06:53:54,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2023-08-27 06:53:54,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2023-08-27 06:53:54,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2023-08-27 06:53:54,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2023-08-27 06:53:54,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2023-08-27 06:53:54,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 39 remaining) [2023-08-27 06:53:54,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 39 remaining) [2023-08-27 06:53:54,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 39 remaining) [2023-08-27 06:53:54,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2023-08-27 06:53:54,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2023-08-27 06:53:54,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2023-08-27 06:53:54,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2023-08-27 06:53:54,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2023-08-27 06:53:54,608 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2023-08-27 06:53:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 39 remaining) [2023-08-27 06:53:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 39 remaining) [2023-08-27 06:53:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2023-08-27 06:53:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2023-08-27 06:53:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2023-08-27 06:53:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2023-08-27 06:53:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2023-08-27 06:53:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2023-08-27 06:53:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2023-08-27 06:53:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2023-08-27 06:53:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2023-08-27 06:53:54,609 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2023-08-27 06:53:54,609 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 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, 1, 1, 1] [2023-08-27 06:53:54,614 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 06:53:54,614 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 06:53:54,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:53:54 BasicIcfg [2023-08-27 06:53:54,617 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 06:53:54,617 INFO L158 Benchmark]: Toolchain (without parser) took 828485.60ms. Allocated memory was 356.5MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 333.1MB in the beginning and 757.6MB in the end (delta: -424.5MB). Peak memory consumption was 920.9MB. Max. memory is 16.0GB. [2023-08-27 06:53:54,617 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 356.5MB. Free memory is still 333.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 06:53:54,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.69ms. Allocated memory is still 356.5MB. Free memory was 332.6MB in the beginning and 321.2MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 06:53:54,617 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.28ms. Allocated memory is still 356.5MB. Free memory was 320.7MB in the beginning and 318.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 06:53:54,618 INFO L158 Benchmark]: Boogie Preprocessor took 52.71ms. Allocated memory is still 356.5MB. Free memory was 318.6MB in the beginning and 316.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 06:53:54,619 INFO L158 Benchmark]: RCFGBuilder took 729.88ms. Allocated memory is still 356.5MB. Free memory was 316.5MB in the beginning and 290.3MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-27 06:53:54,619 INFO L158 Benchmark]: TraceAbstraction took 827339.11ms. Allocated memory was 356.5MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 289.2MB in the beginning and 757.6MB in the end (delta: -468.4MB). Peak memory consumption was 876.9MB. Max. memory is 16.0GB. [2023-08-27 06:53:54,624 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 356.5MB. Free memory is still 333.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 295.69ms. Allocated memory is still 356.5MB. Free memory was 332.6MB in the beginning and 321.2MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.28ms. Allocated memory is still 356.5MB. Free memory was 320.7MB in the beginning and 318.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 52.71ms. Allocated memory is still 356.5MB. Free memory was 318.6MB in the beginning and 316.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 729.88ms. Allocated memory is still 356.5MB. Free memory was 316.5MB in the beginning and 290.3MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 827339.11ms. Allocated memory was 356.5MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 289.2MB in the beginning and 757.6MB in the end (delta: -468.4MB). Peak memory consumption was 876.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.2s, 292 PlacesBefore, 54 PlacesAfterwards, 312 TransitionsBefore, 54 TransitionsAfterwards, 2100 CoEnabledTransitionPairs, 9 FixpointIterations, 249 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 51 TrivialYvCompositions, 6 ConcurrentYvCompositions, 20 ChoiceCompositions, 383 TotalNumberOfCompositions, 4141 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2634, independent: 2486, independent conditional: 0, independent unconditional: 2486, dependent: 148, dependent conditional: 0, dependent unconditional: 148, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1153, independent: 1125, independent conditional: 0, independent unconditional: 1125, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2634, independent: 1361, independent conditional: 0, independent unconditional: 1361, dependent: 120, dependent conditional: 0, dependent unconditional: 120, unknown: 1153, unknown conditional: 0, unknown unconditional: 1153] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, 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 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 86]: 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 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - TimeoutResultAtElement [Line: 85]: 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 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 10ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 351 locations, 39 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: 827.2s, OverallIterations: 41, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 36.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 19.3s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 1370 SdHoareTripleChecker+Valid, 9.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1370 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 9.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 61 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 237 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4878 IncrementalHoareTripleChecker+Invalid, 5178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 237 mSolverCounterUnsat, 21 mSDtfsCounter, 4878 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 804 GetRequests, 595 SyntacticMatches, 15 SemanticMatches, 194 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2874occurred in iteration=37, InterpolantAutomatonStates: 214, 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: 0.6s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 513 NumberOfCodeBlocks, 453 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 761 ConstructedInterpolants, 87 QuantifiedInterpolants, 3218 SizeOfPredicates, 74 NumberOfNonLiveVariables, 9609 ConjunctsInSsa, 222 ConjunctsInUnsatCore, 59 InterpolantComputations, 25 PerfectInterpolantSequences, 365/442 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