/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:01:53,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:01:53,356 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 02:01:53,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:01:53,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:01:53,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:01:53,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:01:53,404 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:01:53,404 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:01:53,405 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:01:53,405 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:01:53,405 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:01:53,405 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:01:53,406 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:01:53,406 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:01:53,406 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:01:53,406 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:01:53,407 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:01:53,407 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:01:53,407 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:01:53,407 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:01:53,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:01:53,411 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:01:53,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:01:53,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:01:53,412 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:01:53,412 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:01:53,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:01:53,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:01:53,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:01:53,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:01:53,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:01:53,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:01:53,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:01:53,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:01:53,414 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:01:53,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:01:53,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:01:53,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:01:53,697 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:01:53,697 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:01:53,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2023-08-27 02:01:54,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:01:54,951 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:01:54,951 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2023-08-27 02:01:54,956 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab3b93c1/237a1279391b4880992d74e4e352a792/FLAGb8c194fce [2023-08-27 02:01:54,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab3b93c1/237a1279391b4880992d74e4e352a792 [2023-08-27 02:01:54,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:01:54,968 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:01:54,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:01:54,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:01:54,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:01:54,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:01:54" (1/1) ... [2023-08-27 02:01:54,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1553fe11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:01:54, skipping insertion in model container [2023-08-27 02:01:54,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:01:54" (1/1) ... [2023-08-27 02:01:54,985 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:01:55,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:01:55,097 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:01:55,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:01:55,120 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:01:55,121 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:01:55,125 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:01:55,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:01:55 WrapperNode [2023-08-27 02:01:55,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:01:55,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:01:55,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:01:55,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:01:55,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:01:55" (1/1) ... [2023-08-27 02:01:55,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:01:55" (1/1) ... [2023-08-27 02:01:55,176 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 294 [2023-08-27 02:01:55,176 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:01:55,176 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:01:55,176 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:01:55,176 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:01:55,183 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:01:55" (1/1) ... [2023-08-27 02:01:55,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:01:55" (1/1) ... [2023-08-27 02:01:55,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:01:55" (1/1) ... [2023-08-27 02:01:55,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:01:55" (1/1) ... [2023-08-27 02:01:55,202 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:01:55" (1/1) ... [2023-08-27 02:01:55,205 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:01:55" (1/1) ... [2023-08-27 02:01:55,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:01:55" (1/1) ... [2023-08-27 02:01:55,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:01:55" (1/1) ... [2023-08-27 02:01:55,223 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:01:55,223 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:01:55,223 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:01:55,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:01:55,224 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:01:55" (1/1) ... [2023-08-27 02:01:55,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:01:55,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:01:55,258 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 02:01:55,276 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 02:01:55,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:01:55,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:01:55,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:01:55,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:01:55,285 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 02:01:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 02:01:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 02:01:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 02:01:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 02:01:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 02:01:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:01:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 02:01:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 02:01:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 02:01:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:01:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:01:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:01:55,287 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 02:01:55,388 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:01:55,394 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:01:55,820 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:01:56,006 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:01:56,006 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-27 02:01:56,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:01:56 BoogieIcfgContainer [2023-08-27 02:01:56,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:01:56,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:01:56,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:01:56,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:01:56,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:01:54" (1/3) ... [2023-08-27 02:01:56,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ef18bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:01:56, skipping insertion in model container [2023-08-27 02:01:56,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:01:55" (2/3) ... [2023-08-27 02:01:56,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ef18bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:01:56, skipping insertion in model container [2023-08-27 02:01:56,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:01:56" (3/3) ... [2023-08-27 02:01:56,013 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2023-08-27 02:01:56,024 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:01:56,024 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2023-08-27 02:01:56,024 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:01:56,126 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 02:01:56,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 368 transitions, 760 flow [2023-08-27 02:01:56,305 INFO L124 PetriNetUnfolderBase]: 31/365 cut-off events. [2023-08-27 02:01:56,306 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 02:01:56,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 365 events. 31/365 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 432 event pairs, 0 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 277. Up to 2 conditions per place. [2023-08-27 02:01:56,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 347 places, 368 transitions, 760 flow [2023-08-27 02:01:56,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 333 places, 354 transitions, 726 flow [2023-08-27 02:01:56,321 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:01:56,341 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 333 places, 354 transitions, 726 flow [2023-08-27 02:01:56,344 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 333 places, 354 transitions, 726 flow [2023-08-27 02:01:56,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 354 transitions, 726 flow [2023-08-27 02:01:56,385 INFO L124 PetriNetUnfolderBase]: 31/354 cut-off events. [2023-08-27 02:01:56,385 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 02:01:56,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 354 events. 31/354 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 425 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 277. Up to 2 conditions per place. [2023-08-27 02:01:56,388 INFO L119 LiptonReduction]: Number of co-enabled transitions 5064 [2023-08-27 02:02:12,574 INFO L134 LiptonReduction]: Checked pairs total: 8918 [2023-08-27 02:02:12,574 INFO L136 LiptonReduction]: Total number of compositions: 412 [2023-08-27 02:02:12,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:02:12,605 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;@1afd4baa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:02:12,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-08-27 02:02:12,607 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:02:12,607 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 02:02:12,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:02:12,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:12,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 02:02:12,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:12,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:12,611 INFO L85 PathProgramCache]: Analyzing trace with hash 49426, now seen corresponding path program 1 times [2023-08-27 02:02:12,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:12,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373670026] [2023-08-27 02:02:12,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:12,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:12,887 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 02:02:12,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:12,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373670026] [2023-08-27 02:02:12,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373670026] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:02:12,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:02:12,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:02:12,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415425899] [2023-08-27 02:02:12,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:02:12,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:02:12,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:12,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:02:12,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:02:12,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 780 [2023-08-27 02:02:12,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:12,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:12,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 780 [2023-08-27 02:02:12,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:13,494 INFO L124 PetriNetUnfolderBase]: 4020/5234 cut-off events. [2023-08-27 02:02:13,494 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2023-08-27 02:02:13,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10600 conditions, 5234 events. 4020/5234 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 23566 event pairs, 2139 based on Foata normal form. 0/2170 useless extension candidates. Maximal degree in co-relation 9480. Up to 5134 conditions per place. [2023-08-27 02:02:13,518 INFO L140 encePairwiseOnDemand]: 755/780 looper letters, 54 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2023-08-27 02:02:13,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 286 flow [2023-08-27 02:02:13,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:02:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:02:13,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2023-08-27 02:02:13,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307692307692308 [2023-08-27 02:02:13,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2023-08-27 02:02:13,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2023-08-27 02:02:13,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:13,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2023-08-27 02:02:13,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:13,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:13,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:13,551 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 152 flow. Second operand 3 states and 1008 transitions. [2023-08-27 02:02:13,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 286 flow [2023-08-27 02:02:13,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 274 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 02:02:13,557 INFO L231 Difference]: Finished difference. Result has 59 places, 69 transitions, 220 flow [2023-08-27 02:02:13,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=59, PETRI_TRANSITIONS=69} [2023-08-27 02:02:13,561 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -10 predicate places. [2023-08-27 02:02:13,561 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 69 transitions, 220 flow [2023-08-27 02:02:13,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:13,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:13,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 02:02:13,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:02:13,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:13,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:13,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1533642, now seen corresponding path program 1 times [2023-08-27 02:02:13,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:13,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204800208] [2023-08-27 02:02:13,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:13,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:13,618 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 02:02:13,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:13,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204800208] [2023-08-27 02:02:13,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204800208] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:02:13,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:02:13,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:02:13,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234508088] [2023-08-27 02:02:13,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:02:13,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:02:13,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:13,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:02:13,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:02:13,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 780 [2023-08-27 02:02:13,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 69 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:13,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:13,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 780 [2023-08-27 02:02:13,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:14,068 INFO L124 PetriNetUnfolderBase]: 4020/5231 cut-off events. [2023-08-27 02:02:14,068 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-08-27 02:02:14,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10486 conditions, 5231 events. 4020/5231 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 23559 event pairs, 2139 based on Foata normal form. 0/2174 useless extension candidates. Maximal degree in co-relation 10399. Up to 5122 conditions per place. [2023-08-27 02:02:14,089 INFO L140 encePairwiseOnDemand]: 771/780 looper letters, 51 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2023-08-27 02:02:14,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 332 flow [2023-08-27 02:02:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:02:14,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:02:14,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 982 transitions. [2023-08-27 02:02:14,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41965811965811967 [2023-08-27 02:02:14,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 982 transitions. [2023-08-27 02:02:14,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 982 transitions. [2023-08-27 02:02:14,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:14,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 982 transitions. [2023-08-27 02:02:14,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:14,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:14,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:14,098 INFO L175 Difference]: Start difference. First operand has 59 places, 69 transitions, 220 flow. Second operand 3 states and 982 transitions. [2023-08-27 02:02:14,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 332 flow [2023-08-27 02:02:14,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:02:14,099 INFO L231 Difference]: Finished difference. Result has 56 places, 66 transitions, 208 flow [2023-08-27 02:02:14,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=56, PETRI_TRANSITIONS=66} [2023-08-27 02:02:14,100 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -13 predicate places. [2023-08-27 02:02:14,100 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 66 transitions, 208 flow [2023-08-27 02:02:14,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:14,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:14,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 02:02:14,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:02:14,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:14,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:14,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1533644, now seen corresponding path program 1 times [2023-08-27 02:02:14,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:14,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168065836] [2023-08-27 02:02:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:14,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:14,142 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 02:02:14,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:14,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168065836] [2023-08-27 02:02:14,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168065836] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:14,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214939172] [2023-08-27 02:02:14,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:14,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:14,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:14,145 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 02:02:14,183 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 02:02:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:14,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:02:14,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:14,297 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 02:02:14,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:02:14,307 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 02:02:14,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214939172] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:02:14,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:02:14,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 02:02:14,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729594978] [2023-08-27 02:02:14,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:02:14,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:02:14,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:14,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:02:14,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:02:14,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 780 [2023-08-27 02:02:14,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 66 transitions, 208 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:14,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:14,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 780 [2023-08-27 02:02:14,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:14,819 INFO L124 PetriNetUnfolderBase]: 4041/5261 cut-off events. [2023-08-27 02:02:14,820 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-08-27 02:02:14,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10591 conditions, 5261 events. 4041/5261 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 23603 event pairs, 2139 based on Foata normal form. 0/2184 useless extension candidates. Maximal degree in co-relation 10399. Up to 5146 conditions per place. [2023-08-27 02:02:14,845 INFO L140 encePairwiseOnDemand]: 766/780 looper letters, 51 selfloop transitions, 41 changer transitions 0/96 dead transitions. [2023-08-27 02:02:14,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 96 transitions, 542 flow [2023-08-27 02:02:14,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:02:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:02:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1955 transitions. [2023-08-27 02:02:14,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41773504273504275 [2023-08-27 02:02:14,849 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1955 transitions. [2023-08-27 02:02:14,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1955 transitions. [2023-08-27 02:02:14,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:14,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1955 transitions. [2023-08-27 02:02:14,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 325.8333333333333) internal successors, (1955), 6 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:14,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 780.0) internal successors, (5460), 7 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:14,860 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 780.0) internal successors, (5460), 7 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:14,860 INFO L175 Difference]: Start difference. First operand has 56 places, 66 transitions, 208 flow. Second operand 6 states and 1955 transitions. [2023-08-27 02:02:14,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 96 transitions, 542 flow [2023-08-27 02:02:14,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 96 transitions, 490 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:02:14,864 INFO L231 Difference]: Finished difference. Result has 62 places, 96 transitions, 461 flow [2023-08-27 02:02:14,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=461, PETRI_PLACES=62, PETRI_TRANSITIONS=96} [2023-08-27 02:02:14,865 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -7 predicate places. [2023-08-27 02:02:14,865 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 96 transitions, 461 flow [2023-08-27 02:02:14,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:14,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:14,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 02:02:14,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 02:02:15,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:15,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:15,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:15,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1474967161, now seen corresponding path program 1 times [2023-08-27 02:02:15,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:15,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686516639] [2023-08-27 02:02:15,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:15,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:15,148 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 02:02:15,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:15,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686516639] [2023-08-27 02:02:15,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686516639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:02:15,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:02:15,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:02:15,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644301473] [2023-08-27 02:02:15,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:02:15,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:02:15,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:15,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:02:15,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:02:15,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 780 [2023-08-27 02:02:15,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 96 transitions, 461 flow. Second operand has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:15,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:15,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 780 [2023-08-27 02:02:15,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:15,588 INFO L124 PetriNetUnfolderBase]: 4040/5260 cut-off events. [2023-08-27 02:02:15,588 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-27 02:02:15,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10653 conditions, 5260 events. 4040/5260 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 23631 event pairs, 2139 based on Foata normal form. 1/2191 useless extension candidates. Maximal degree in co-relation 10523. Up to 5164 conditions per place. [2023-08-27 02:02:15,603 INFO L140 encePairwiseOnDemand]: 777/780 looper letters, 89 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-08-27 02:02:15,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 95 transitions, 639 flow [2023-08-27 02:02:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:02:15,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:02:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 909 transitions. [2023-08-27 02:02:15,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38846153846153847 [2023-08-27 02:02:15,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 909 transitions. [2023-08-27 02:02:15,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 909 transitions. [2023-08-27 02:02:15,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:15,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 909 transitions. [2023-08-27 02:02:15,608 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 02:02:15,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:15,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:15,612 INFO L175 Difference]: Start difference. First operand has 62 places, 96 transitions, 461 flow. Second operand 3 states and 909 transitions. [2023-08-27 02:02:15,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 95 transitions, 639 flow [2023-08-27 02:02:15,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 95 transitions, 574 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-08-27 02:02:15,614 INFO L231 Difference]: Finished difference. Result has 63 places, 95 transitions, 396 flow [2023-08-27 02:02:15,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=63, PETRI_TRANSITIONS=95} [2023-08-27 02:02:15,615 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -6 predicate places. [2023-08-27 02:02:15,615 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 95 transitions, 396 flow [2023-08-27 02:02:15,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:15,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:15,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:02:15,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 02:02:15,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:15,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1553334657, now seen corresponding path program 1 times [2023-08-27 02:02:15,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:15,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251227410] [2023-08-27 02:02:15,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:15,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:15,691 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 02:02:15,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:15,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251227410] [2023-08-27 02:02:15,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251227410] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:15,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703996467] [2023-08-27 02:02:15,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:15,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:15,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:15,701 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 02:02:15,703 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 02:02:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:15,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 02:02:15,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:15,827 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 02:02:15,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:02:15,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703996467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:02:15,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:02:15,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-08-27 02:02:15,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638982748] [2023-08-27 02:02:15,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:02:15,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:02:15,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:15,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:02:15,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:02:15,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 780 [2023-08-27 02:02:15,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 95 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 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 02:02:15,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:15,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 780 [2023-08-27 02:02:15,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:16,291 INFO L124 PetriNetUnfolderBase]: 4034/5254 cut-off events. [2023-08-27 02:02:16,292 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-27 02:02:16,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10600 conditions, 5254 events. 4034/5254 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 23541 event pairs, 2139 based on Foata normal form. 2/2192 useless extension candidates. Maximal degree in co-relation 10583. Up to 5149 conditions per place. [2023-08-27 02:02:16,315 INFO L140 encePairwiseOnDemand]: 769/780 looper letters, 73 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2023-08-27 02:02:16,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 89 transitions, 537 flow [2023-08-27 02:02:16,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:02:16,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:02:16,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1201 transitions. [2023-08-27 02:02:16,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38493589743589746 [2023-08-27 02:02:16,318 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1201 transitions. [2023-08-27 02:02:16,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1201 transitions. [2023-08-27 02:02:16,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:16,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1201 transitions. [2023-08-27 02:02:16,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 300.25) internal successors, (1201), 4 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:16,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 780.0) internal successors, (3900), 5 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:16,325 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 780.0) internal successors, (3900), 5 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:16,325 INFO L175 Difference]: Start difference. First operand has 63 places, 95 transitions, 396 flow. Second operand 4 states and 1201 transitions. [2023-08-27 02:02:16,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 89 transitions, 537 flow [2023-08-27 02:02:16,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 533 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 02:02:16,328 INFO L231 Difference]: Finished difference. Result has 65 places, 89 transitions, 387 flow [2023-08-27 02:02:16,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=387, PETRI_PLACES=65, PETRI_TRANSITIONS=89} [2023-08-27 02:02:16,328 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -4 predicate places. [2023-08-27 02:02:16,328 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 89 transitions, 387 flow [2023-08-27 02:02:16,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 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 02:02:16,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:16,329 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 02:02:16,354 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 02:02:16,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:16,536 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:16,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:16,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1554423918, now seen corresponding path program 2 times [2023-08-27 02:02:16,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:16,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458783512] [2023-08-27 02:02:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:16,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:16,616 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 02:02:16,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:16,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458783512] [2023-08-27 02:02:16,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458783512] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:16,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104647670] [2023-08-27 02:02:16,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:02:16,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:16,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:16,633 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 02:02:16,634 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 02:02:16,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 02:02:16,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:02:16,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 02:02:16,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:16,747 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 02:02:16,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:02:16,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104647670] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:02:16,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:02:16,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 02:02:16,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670334751] [2023-08-27 02:02:16,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:02:16,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:02:16,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:16,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:02:16,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 02:02:16,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 780 [2023-08-27 02:02:16,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 89 transitions, 387 flow. Second operand has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:16,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:16,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 780 [2023-08-27 02:02:16,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:17,153 INFO L124 PetriNetUnfolderBase]: 4034/5253 cut-off events. [2023-08-27 02:02:17,154 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-08-27 02:02:17,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10604 conditions, 5253 events. 4034/5253 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 23565 event pairs, 2139 based on Foata normal form. 1/2192 useless extension candidates. Maximal degree in co-relation 10501. Up to 5152 conditions per place. [2023-08-27 02:02:17,181 INFO L140 encePairwiseOnDemand]: 777/780 looper letters, 79 selfloop transitions, 5 changer transitions 0/88 dead transitions. [2023-08-27 02:02:17,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 545 flow [2023-08-27 02:02:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:02:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:02:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 988 transitions. [2023-08-27 02:02:17,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2023-08-27 02:02:17,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 988 transitions. [2023-08-27 02:02:17,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 988 transitions. [2023-08-27 02:02:17,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:17,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 988 transitions. [2023-08-27 02:02:17,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:17,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:17,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:17,188 INFO L175 Difference]: Start difference. First operand has 65 places, 89 transitions, 387 flow. Second operand 3 states and 988 transitions. [2023-08-27 02:02:17,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 545 flow [2023-08-27 02:02:17,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 532 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:02:17,190 INFO L231 Difference]: Finished difference. Result has 64 places, 88 transitions, 374 flow [2023-08-27 02:02:17,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=64, PETRI_TRANSITIONS=88} [2023-08-27 02:02:17,191 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2023-08-27 02:02:17,191 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 88 transitions, 374 flow [2023-08-27 02:02:17,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:17,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:17,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:02:17,199 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 02:02:17,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:17,396 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:17,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:17,397 INFO L85 PathProgramCache]: Analyzing trace with hash -909951207, now seen corresponding path program 1 times [2023-08-27 02:02:17,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:17,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497391739] [2023-08-27 02:02:17,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:17,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:02:17,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:17,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497391739] [2023-08-27 02:02:17,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497391739] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:17,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783300561] [2023-08-27 02:02:17,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:17,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:17,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:17,610 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 02:02:17,611 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 02:02:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:17,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 02:02:17,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:17,747 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 02:02:17,767 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:02:17,789 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:02:17,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 02:02:17,810 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:02:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:02:17,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:02:17,891 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:17,891 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-08-27 02:02:17,899 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:17,900 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 33 treesize of output 29 [2023-08-27 02:02:17,904 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 9 treesize of output 7 [2023-08-27 02:02:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:02:17,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783300561] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:02:17,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:02:17,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 02:02:17,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179285412] [2023-08-27 02:02:17,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:02:17,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 02:02:17,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 02:02:17,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-08-27 02:02:17,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 780 [2023-08-27 02:02:17,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 88 transitions, 374 flow. Second operand has 13 states, 13 states have (on average 274.2307692307692) internal successors, (3565), 13 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:17,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:17,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 780 [2023-08-27 02:02:17,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:18,552 INFO L124 PetriNetUnfolderBase]: 4031/5249 cut-off events. [2023-08-27 02:02:18,552 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-08-27 02:02:18,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10584 conditions, 5249 events. 4031/5249 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 23509 event pairs, 2139 based on Foata normal form. 0/2191 useless extension candidates. Maximal degree in co-relation 10532. Up to 5116 conditions per place. [2023-08-27 02:02:18,570 INFO L140 encePairwiseOnDemand]: 772/780 looper letters, 64 selfloop transitions, 16 changer transitions 0/84 dead transitions. [2023-08-27 02:02:18,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 513 flow [2023-08-27 02:02:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:02:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:02:18,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1692 transitions. [2023-08-27 02:02:18,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36153846153846153 [2023-08-27 02:02:18,574 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1692 transitions. [2023-08-27 02:02:18,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1692 transitions. [2023-08-27 02:02:18,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:18,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1692 transitions. [2023-08-27 02:02:18,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:18,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 780.0) internal successors, (5460), 7 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:18,582 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 780.0) internal successors, (5460), 7 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:18,582 INFO L175 Difference]: Start difference. First operand has 64 places, 88 transitions, 374 flow. Second operand 6 states and 1692 transitions. [2023-08-27 02:02:18,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 513 flow [2023-08-27 02:02:18,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 503 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:02:18,584 INFO L231 Difference]: Finished difference. Result has 66 places, 84 transitions, 375 flow [2023-08-27 02:02:18,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=375, PETRI_PLACES=66, PETRI_TRANSITIONS=84} [2023-08-27 02:02:18,584 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2023-08-27 02:02:18,585 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 84 transitions, 375 flow [2023-08-27 02:02:18,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 274.2307692307692) internal successors, (3565), 13 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:18,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:18,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:02:18,610 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 02:02:18,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:18,789 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:18,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:18,789 INFO L85 PathProgramCache]: Analyzing trace with hash -909951220, now seen corresponding path program 1 times [2023-08-27 02:02:18,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:18,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571880530] [2023-08-27 02:02:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:18,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:02:19,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:19,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571880530] [2023-08-27 02:02:19,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571880530] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:19,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344809681] [2023-08-27 02:02:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:19,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:19,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:19,047 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 02:02:19,081 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 02:02:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:19,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 02:02:19,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:19,195 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 02:02:19,209 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:02:19,224 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:02:19,224 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 02:02:19,240 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:02:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:02:19,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:02:19,298 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:19,298 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-08-27 02:02:19,304 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:19,304 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 39 treesize of output 35 [2023-08-27 02:02:19,308 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 11 treesize of output 9 [2023-08-27 02:02:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:02:19,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344809681] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:02:19,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:02:19,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 02:02:19,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536201845] [2023-08-27 02:02:19,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:02:19,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 02:02:19,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:19,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 02:02:19,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2023-08-27 02:02:19,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 780 [2023-08-27 02:02:19,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 84 transitions, 375 flow. Second operand has 12 states, 12 states have (on average 274.25) internal successors, (3291), 12 states have internal predecessors, (3291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:19,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:19,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 780 [2023-08-27 02:02:19,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:19,890 INFO L124 PetriNetUnfolderBase]: 4028/5245 cut-off events. [2023-08-27 02:02:19,891 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-08-27 02:02:19,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10579 conditions, 5245 events. 4028/5245 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 23553 event pairs, 2139 based on Foata normal form. 0/2195 useless extension candidates. Maximal degree in co-relation 10479. Up to 5116 conditions per place. [2023-08-27 02:02:19,911 INFO L140 encePairwiseOnDemand]: 772/780 looper letters, 60 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2023-08-27 02:02:19,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 506 flow [2023-08-27 02:02:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:02:19,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:02:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1691 transitions. [2023-08-27 02:02:19,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3613247863247863 [2023-08-27 02:02:19,915 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1691 transitions. [2023-08-27 02:02:19,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1691 transitions. [2023-08-27 02:02:19,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:19,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1691 transitions. [2023-08-27 02:02:19,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 281.8333333333333) internal successors, (1691), 6 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:19,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 780.0) internal successors, (5460), 7 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:19,924 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 780.0) internal successors, (5460), 7 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:19,924 INFO L175 Difference]: Start difference. First operand has 66 places, 84 transitions, 375 flow. Second operand 6 states and 1691 transitions. [2023-08-27 02:02:19,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 506 flow [2023-08-27 02:02:19,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 80 transitions, 476 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 02:02:19,925 INFO L231 Difference]: Finished difference. Result has 67 places, 80 transitions, 356 flow [2023-08-27 02:02:19,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=67, PETRI_TRANSITIONS=80} [2023-08-27 02:02:19,928 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2023-08-27 02:02:19,928 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 80 transitions, 356 flow [2023-08-27 02:02:19,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 274.25) internal successors, (3291), 12 states have internal predecessors, (3291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:19,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:19,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:02:19,948 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 02:02:20,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:20,134 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:20,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:20,134 INFO L85 PathProgramCache]: Analyzing trace with hash -909951210, now seen corresponding path program 1 times [2023-08-27 02:02:20,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:20,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246006878] [2023-08-27 02:02:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:20,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:02:20,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:20,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246006878] [2023-08-27 02:02:20,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246006878] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:20,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927960992] [2023-08-27 02:02:20,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:20,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:20,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:20,525 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 02:02:20,527 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 02:02:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:20,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 02:02:20,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:20,673 INFO L322 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-27 02:02:20,674 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-27 02:02:20,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:02:20,704 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 02:02:20,704 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-27 02:02:20,724 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:02:20,743 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:02:20,743 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 02:02:20,751 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:02:20,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:02:20,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:02:20,823 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_343 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_343) c_~A~0.base) c_~A~0.offset) 2147483648)) is different from false [2023-08-27 02:02:20,888 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:20,889 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-08-27 02:02:20,896 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:20,896 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 125 treesize of output 117 [2023-08-27 02:02:20,902 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 23 treesize of output 21 [2023-08-27 02:02:20,907 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 24 treesize of output 20 [2023-08-27 02:02:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 02:02:20,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927960992] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:02:20,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:02:20,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-27 02:02:20,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809247926] [2023-08-27 02:02:20,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:02:20,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 02:02:20,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:20,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 02:02:20,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=168, Unknown=2, NotChecked=26, Total=240 [2023-08-27 02:02:20,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 780 [2023-08-27 02:02:20,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 80 transitions, 356 flow. Second operand has 16 states, 16 states have (on average 274.1875) internal successors, (4387), 16 states have internal predecessors, (4387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:20,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:20,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 780 [2023-08-27 02:02:20,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:21,688 INFO L124 PetriNetUnfolderBase]: 4025/5241 cut-off events. [2023-08-27 02:02:21,689 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-27 02:02:21,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10562 conditions, 5241 events. 4025/5241 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 23532 event pairs, 2139 based on Foata normal form. 0/2195 useless extension candidates. Maximal degree in co-relation 10470. Up to 5116 conditions per place. [2023-08-27 02:02:21,705 INFO L140 encePairwiseOnDemand]: 772/780 looper letters, 56 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2023-08-27 02:02:21,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 76 transitions, 479 flow [2023-08-27 02:02:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:02:21,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:02:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1690 transitions. [2023-08-27 02:02:21,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2023-08-27 02:02:21,709 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1690 transitions. [2023-08-27 02:02:21,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1690 transitions. [2023-08-27 02:02:21,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:21,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1690 transitions. [2023-08-27 02:02:21,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 281.6666666666667) internal successors, (1690), 6 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:21,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 780.0) internal successors, (5460), 7 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:21,717 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 780.0) internal successors, (5460), 7 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:21,717 INFO L175 Difference]: Start difference. First operand has 67 places, 80 transitions, 356 flow. Second operand 6 states and 1690 transitions. [2023-08-27 02:02:21,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 76 transitions, 479 flow [2023-08-27 02:02:21,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 447 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 02:02:21,719 INFO L231 Difference]: Finished difference. Result has 66 places, 76 transitions, 335 flow [2023-08-27 02:02:21,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=335, PETRI_PLACES=66, PETRI_TRANSITIONS=76} [2023-08-27 02:02:21,720 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2023-08-27 02:02:21,720 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 76 transitions, 335 flow [2023-08-27 02:02:21,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 274.1875) internal successors, (4387), 16 states have internal predecessors, (4387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:21,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:21,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:02:21,743 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 02:02:21,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:21,927 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:21,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:21,927 INFO L85 PathProgramCache]: Analyzing trace with hash -909951211, now seen corresponding path program 1 times [2023-08-27 02:02:21,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:21,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044374681] [2023-08-27 02:02:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:21,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:22,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:02:22,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:22,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044374681] [2023-08-27 02:02:22,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044374681] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:22,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676832058] [2023-08-27 02:02:22,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:22,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:22,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:22,160 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 02:02:22,177 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 02:02:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:22,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 02:02:22,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:22,324 INFO L322 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-27 02:02:22,325 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-27 02:02:22,335 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:02:22,363 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 02:02:22,364 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-27 02:02:22,386 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:02:22,415 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-27 02:02:22,415 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:02:22,433 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:02:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:02:22,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:02:22,527 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:22,527 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 02:02:22,534 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:22,534 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 143 treesize of output 135 [2023-08-27 02:02:22,539 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 27 treesize of output 25 [2023-08-27 02:02:22,544 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 28 treesize of output 24 [2023-08-27 02:02:22,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:02:22,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676832058] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:02:22,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:02:22,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-27 02:02:22,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003085050] [2023-08-27 02:02:22,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:02:22,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 02:02:22,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:22,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 02:02:22,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=236, Unknown=3, NotChecked=0, Total=306 [2023-08-27 02:02:22,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 780 [2023-08-27 02:02:22,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 76 transitions, 335 flow. Second operand has 18 states, 18 states have (on average 274.05555555555554) internal successors, (4933), 18 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:22,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:22,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 780 [2023-08-27 02:02:22,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:23,127 INFO L124 PetriNetUnfolderBase]: 4022/5237 cut-off events. [2023-08-27 02:02:23,127 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-27 02:02:23,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10546 conditions, 5237 events. 4022/5237 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 23504 event pairs, 2139 based on Foata normal form. 2/2195 useless extension candidates. Maximal degree in co-relation 10462. Up to 5116 conditions per place. [2023-08-27 02:02:23,142 INFO L140 encePairwiseOnDemand]: 772/780 looper letters, 52 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2023-08-27 02:02:23,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 72 transitions, 450 flow [2023-08-27 02:02:23,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:02:23,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:02:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1689 transitions. [2023-08-27 02:02:23,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608974358974359 [2023-08-27 02:02:23,160 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1689 transitions. [2023-08-27 02:02:23,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1689 transitions. [2023-08-27 02:02:23,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:23,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1689 transitions. [2023-08-27 02:02:23,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 281.5) internal successors, (1689), 6 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:23,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 780.0) internal successors, (5460), 7 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:23,166 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 780.0) internal successors, (5460), 7 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:23,166 INFO L175 Difference]: Start difference. First operand has 66 places, 76 transitions, 335 flow. Second operand 6 states and 1689 transitions. [2023-08-27 02:02:23,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 72 transitions, 450 flow [2023-08-27 02:02:23,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 72 transitions, 443 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:02:23,168 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 339 flow [2023-08-27 02:02:23,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=68, PETRI_TRANSITIONS=72} [2023-08-27 02:02:23,168 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2023-08-27 02:02:23,169 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 339 flow [2023-08-27 02:02:23,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 274.05555555555554) internal successors, (4933), 18 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:23,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:23,169 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 02:02:23,176 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 02:02:23,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:23,374 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:23,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:23,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1855025915, now seen corresponding path program 1 times [2023-08-27 02:02:23,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:23,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974970047] [2023-08-27 02:02:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:23,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 02:02:23,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:23,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974970047] [2023-08-27 02:02:23,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974970047] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:23,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935116735] [2023-08-27 02:02:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:23,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:23,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:23,441 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 02:02:23,461 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 02:02:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:23,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 02:02:23,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:23,583 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 02:02:23,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:02:23,642 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 02:02:23,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935116735] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:02:23,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:02:23,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-27 02:02:23,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496344922] [2023-08-27 02:02:23,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:02:23,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:02:23,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:23,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:02:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:02:23,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 780 [2023-08-27 02:02:23,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 72 transitions, 339 flow. Second operand has 14 states, 14 states have (on average 286.2857142857143) internal successors, (4008), 14 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:23,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:23,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 780 [2023-08-27 02:02:23,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:24,650 INFO L124 PetriNetUnfolderBase]: 7991/10374 cut-off events. [2023-08-27 02:02:24,650 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-08-27 02:02:24,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20862 conditions, 10374 events. 7991/10374 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 49616 event pairs, 3994 based on Foata normal form. 2/4328 useless extension candidates. Maximal degree in co-relation 20774. Up to 5057 conditions per place. [2023-08-27 02:02:24,692 INFO L140 encePairwiseOnDemand]: 770/780 looper letters, 106 selfloop transitions, 23 changer transitions 0/133 dead transitions. [2023-08-27 02:02:24,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 133 transitions, 759 flow [2023-08-27 02:02:24,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:02:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:02:24,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2684 transitions. [2023-08-27 02:02:24,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38233618233618233 [2023-08-27 02:02:24,698 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2684 transitions. [2023-08-27 02:02:24,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2684 transitions. [2023-08-27 02:02:24,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:24,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2684 transitions. [2023-08-27 02:02:24,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 298.22222222222223) internal successors, (2684), 9 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:24,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 780.0) internal successors, (7800), 10 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:24,710 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 780.0) internal successors, (7800), 10 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:24,711 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 339 flow. Second operand 9 states and 2684 transitions. [2023-08-27 02:02:24,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 133 transitions, 759 flow [2023-08-27 02:02:24,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 133 transitions, 719 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 02:02:24,713 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 392 flow [2023-08-27 02:02:24,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=392, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2023-08-27 02:02:24,714 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 3 predicate places. [2023-08-27 02:02:24,714 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 392 flow [2023-08-27 02:02:24,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 286.2857142857143) internal successors, (4008), 14 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:24,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:24,715 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-27 02:02:24,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-27 02:02:24,923 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,SelfDestructingSolverStorable10 [2023-08-27 02:02:24,924 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:24,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:24,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1503618357, now seen corresponding path program 2 times [2023-08-27 02:02:24,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:24,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934338313] [2023-08-27 02:02:24,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:24,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 02:02:24,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:24,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934338313] [2023-08-27 02:02:24,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934338313] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:24,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371001329] [2023-08-27 02:02:24,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:02:24,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:24,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:24,993 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 02:02:24,996 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 02:02:25,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 02:02:25,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:02:25,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 02:02:25,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:25,119 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 02:02:25,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:02:25,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371001329] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:02:25,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:02:25,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-08-27 02:02:25,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739461314] [2023-08-27 02:02:25,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:02:25,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:02:25,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:25,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:02:25,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-27 02:02:25,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 780 [2023-08-27 02:02:25,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 301.25) internal successors, (1205), 4 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:25,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:25,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 780 [2023-08-27 02:02:25,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:25,739 INFO L124 PetriNetUnfolderBase]: 7095/9252 cut-off events. [2023-08-27 02:02:25,739 INFO L125 PetriNetUnfolderBase]: For 555/555 co-relation queries the response was YES. [2023-08-27 02:02:25,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18585 conditions, 9252 events. 7095/9252 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 44414 event pairs, 3780 based on Foata normal form. 472/4412 useless extension candidates. Maximal degree in co-relation 18510. Up to 9080 conditions per place. [2023-08-27 02:02:25,768 INFO L140 encePairwiseOnDemand]: 776/780 looper letters, 68 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-08-27 02:02:25,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 497 flow [2023-08-27 02:02:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:02:25,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:02:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 947 transitions. [2023-08-27 02:02:25,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4047008547008547 [2023-08-27 02:02:25,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 947 transitions. [2023-08-27 02:02:25,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 947 transitions. [2023-08-27 02:02:25,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:25,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 947 transitions. [2023-08-27 02:02:25,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:25,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:25,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:25,775 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 392 flow. Second operand 3 states and 947 transitions. [2023-08-27 02:02:25,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 497 flow [2023-08-27 02:02:25,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 73 transitions, 428 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-27 02:02:25,776 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 292 flow [2023-08-27 02:02:25,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2023-08-27 02:02:25,777 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -6 predicate places. [2023-08-27 02:02:25,777 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 292 flow [2023-08-27 02:02:25,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 301.25) internal successors, (1205), 4 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:25,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:25,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:02:25,785 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 02:02:25,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:25,982 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:25,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:25,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1052215508, now seen corresponding path program 1 times [2023-08-27 02:02:25,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:25,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209797801] [2023-08-27 02:02:25,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:25,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 02:02:26,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:26,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209797801] [2023-08-27 02:02:26,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209797801] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:02:26,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:02:26,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:02:26,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50237930] [2023-08-27 02:02:26,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:02:26,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:02:26,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:26,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:02:26,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:02:26,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 780 [2023-08-27 02:02:26,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:26,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:26,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 780 [2023-08-27 02:02:26,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:26,747 INFO L124 PetriNetUnfolderBase]: 9955/13302 cut-off events. [2023-08-27 02:02:26,748 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-08-27 02:02:26,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26834 conditions, 13302 events. 9955/13302 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 68111 event pairs, 3742 based on Foata normal form. 0/6338 useless extension candidates. Maximal degree in co-relation 26823. Up to 8227 conditions per place. [2023-08-27 02:02:26,800 INFO L140 encePairwiseOnDemand]: 776/780 looper letters, 92 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2023-08-27 02:02:26,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 98 transitions, 534 flow [2023-08-27 02:02:26,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:02:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:02:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1052 transitions. [2023-08-27 02:02:26,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4495726495726496 [2023-08-27 02:02:26,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1052 transitions. [2023-08-27 02:02:26,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1052 transitions. [2023-08-27 02:02:26,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:26,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1052 transitions. [2023-08-27 02:02:26,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:26,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:26,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:26,811 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 292 flow. Second operand 3 states and 1052 transitions. [2023-08-27 02:02:26,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 98 transitions, 534 flow [2023-08-27 02:02:26,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 98 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:02:26,813 INFO L231 Difference]: Finished difference. Result has 65 places, 75 transitions, 310 flow [2023-08-27 02:02:26,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=65, PETRI_TRANSITIONS=75} [2023-08-27 02:02:26,814 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -4 predicate places. [2023-08-27 02:02:26,814 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 75 transitions, 310 flow [2023-08-27 02:02:26,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:26,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:26,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:02:26,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 02:02:26,815 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:26,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:26,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1052215509, now seen corresponding path program 1 times [2023-08-27 02:02:26,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:26,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520439689] [2023-08-27 02:02:26,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:26,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:02:26,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:26,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520439689] [2023-08-27 02:02:26,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520439689] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:26,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577498038] [2023-08-27 02:02:26,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:26,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:26,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:26,922 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 02:02:26,942 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 02:02:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:27,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 02:02:27,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:27,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:02:27,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:02:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:02:27,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577498038] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:02:27,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:02:27,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-27 02:02:27,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232432184] [2023-08-27 02:02:27,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:02:27,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 02:02:27,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:27,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 02:02:27,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-08-27 02:02:27,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 780 [2023-08-27 02:02:27,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 75 transitions, 310 flow. Second operand has 12 states, 12 states have (on average 282.8333333333333) internal successors, (3394), 12 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:27,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:27,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 780 [2023-08-27 02:02:27,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:27,773 INFO L124 PetriNetUnfolderBase]: 5992/8083 cut-off events. [2023-08-27 02:02:27,773 INFO L125 PetriNetUnfolderBase]: For 1062/1062 co-relation queries the response was YES. [2023-08-27 02:02:27,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17670 conditions, 8083 events. 5992/8083 cut-off events. For 1062/1062 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 38595 event pairs, 3576 based on Foata normal form. 124/4496 useless extension candidates. Maximal degree in co-relation 17658. Up to 6630 conditions per place. [2023-08-27 02:02:27,803 INFO L140 encePairwiseOnDemand]: 766/780 looper letters, 101 selfloop transitions, 22 changer transitions 0/126 dead transitions. [2023-08-27 02:02:27,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 126 transitions, 672 flow [2023-08-27 02:02:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:02:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:02:27,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2362 transitions. [2023-08-27 02:02:27,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378525641025641 [2023-08-27 02:02:27,808 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2362 transitions. [2023-08-27 02:02:27,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2362 transitions. [2023-08-27 02:02:27,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:27,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2362 transitions. [2023-08-27 02:02:27,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 295.25) internal successors, (2362), 8 states have internal predecessors, (2362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:27,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 780.0) internal successors, (7020), 9 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:27,817 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 780.0) internal successors, (7020), 9 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:27,817 INFO L175 Difference]: Start difference. First operand has 65 places, 75 transitions, 310 flow. Second operand 8 states and 2362 transitions. [2023-08-27 02:02:27,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 126 transitions, 672 flow [2023-08-27 02:02:27,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 667 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:02:27,820 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 379 flow [2023-08-27 02:02:27,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=379, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2023-08-27 02:02:27,820 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 4 predicate places. [2023-08-27 02:02:27,820 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 379 flow [2023-08-27 02:02:27,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 282.8333333333333) internal successors, (3394), 12 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:27,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:27,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:02:27,843 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 02:02:28,026 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,SelfDestructingSolverStorable13 [2023-08-27 02:02:28,026 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:28,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:28,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1412561371, now seen corresponding path program 1 times [2023-08-27 02:02:28,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:28,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408452265] [2023-08-27 02:02:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:28,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:02:28,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:28,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408452265] [2023-08-27 02:02:28,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408452265] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:28,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056827287] [2023-08-27 02:02:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:28,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:28,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:28,114 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 02:02:28,148 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 02:02:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:28,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 02:02:28,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:02:28,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:02:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:02:28,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056827287] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:02:28,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:02:28,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 02:02:28,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601966904] [2023-08-27 02:02:28,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:02:28,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 02:02:28,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:28,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 02:02:28,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-08-27 02:02:28,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 780 [2023-08-27 02:02:28,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 379 flow. Second operand has 12 states, 12 states have (on average 278.8333333333333) internal successors, (3346), 12 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:28,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:28,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 780 [2023-08-27 02:02:28,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:28,914 INFO L124 PetriNetUnfolderBase]: 4412/6148 cut-off events. [2023-08-27 02:02:28,914 INFO L125 PetriNetUnfolderBase]: For 1120/1381 co-relation queries the response was YES. [2023-08-27 02:02:28,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14309 conditions, 6148 events. 4412/6148 cut-off events. For 1120/1381 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 32362 event pairs, 2980 based on Foata normal form. 261/3571 useless extension candidates. Maximal degree in co-relation 14294. Up to 5648 conditions per place. [2023-08-27 02:02:28,935 INFO L140 encePairwiseOnDemand]: 770/780 looper letters, 87 selfloop transitions, 22 changer transitions 0/113 dead transitions. [2023-08-27 02:02:28,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 113 transitions, 683 flow [2023-08-27 02:02:28,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:02:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:02:28,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2312 transitions. [2023-08-27 02:02:28,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37051282051282053 [2023-08-27 02:02:28,939 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2312 transitions. [2023-08-27 02:02:28,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2312 transitions. [2023-08-27 02:02:28,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:28,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2312 transitions. [2023-08-27 02:02:28,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 289.0) internal successors, (2312), 8 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:28,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 780.0) internal successors, (7020), 9 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:28,948 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 780.0) internal successors, (7020), 9 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:28,948 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 379 flow. Second operand 8 states and 2312 transitions. [2023-08-27 02:02:28,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 113 transitions, 683 flow [2023-08-27 02:02:28,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 113 transitions, 645 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 02:02:28,951 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 401 flow [2023-08-27 02:02:28,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=401, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2023-08-27 02:02:28,951 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 8 predicate places. [2023-08-27 02:02:28,952 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 401 flow [2023-08-27 02:02:28,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 278.8333333333333) internal successors, (3346), 12 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:28,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:28,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:02:28,963 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 02:02:29,157 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,SelfDestructingSolverStorable14 [2023-08-27 02:02:29,158 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:29,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:29,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1544052953, now seen corresponding path program 1 times [2023-08-27 02:02:29,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:29,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489278328] [2023-08-27 02:02:29,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:29,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 02:02:29,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:29,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489278328] [2023-08-27 02:02:29,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489278328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:02:29,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:02:29,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:02:29,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427409626] [2023-08-27 02:02:29,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:02:29,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:02:29,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:29,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:02:29,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:02:29,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 780 [2023-08-27 02:02:29,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:29,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:29,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 780 [2023-08-27 02:02:29,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:29,830 INFO L124 PetriNetUnfolderBase]: 6497/8924 cut-off events. [2023-08-27 02:02:29,831 INFO L125 PetriNetUnfolderBase]: For 2090/2471 co-relation queries the response was YES. [2023-08-27 02:02:29,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21891 conditions, 8924 events. 6497/8924 cut-off events. For 2090/2471 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 48887 event pairs, 3185 based on Foata normal form. 381/5321 useless extension candidates. Maximal degree in co-relation 21874. Up to 6062 conditions per place. [2023-08-27 02:02:29,853 INFO L140 encePairwiseOnDemand]: 776/780 looper letters, 106 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2023-08-27 02:02:29,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 113 transitions, 724 flow [2023-08-27 02:02:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:02:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:02:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1058 transitions. [2023-08-27 02:02:29,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45213675213675214 [2023-08-27 02:02:29,855 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1058 transitions. [2023-08-27 02:02:29,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1058 transitions. [2023-08-27 02:02:29,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:29,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1058 transitions. [2023-08-27 02:02:29,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.6666666666667) internal successors, (1058), 3 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:29,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:29,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 780.0) internal successors, (3120), 4 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:29,859 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 401 flow. Second operand 3 states and 1058 transitions. [2023-08-27 02:02:29,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 113 transitions, 724 flow [2023-08-27 02:02:29,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 113 transitions, 686 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 02:02:29,867 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 377 flow [2023-08-27 02:02:29,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2023-08-27 02:02:29,867 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 6 predicate places. [2023-08-27 02:02:29,868 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 377 flow [2023-08-27 02:02:29,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:29,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:29,868 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:02:29,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 02:02:29,868 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:29,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:29,868 INFO L85 PathProgramCache]: Analyzing trace with hash -479272973, now seen corresponding path program 2 times [2023-08-27 02:02:29,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:29,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685364404] [2023-08-27 02:02:29,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:29,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:02:30,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:30,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685364404] [2023-08-27 02:02:30,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685364404] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:30,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397345893] [2023-08-27 02:02:30,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:02:30,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:30,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:30,638 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 02:02:30,640 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 02:02:30,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:02:30,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:02:30,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 02:02:30,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:30,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:30,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:30,826 INFO L322 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-27 02:02:30,826 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 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-27 02:02:30,882 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:02:30,923 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 02:02:30,923 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-27 02:02:30,956 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:02:30,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:02:31,006 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:02:31,006 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 02:02:31,033 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:02:31,047 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:02:31,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:31,077 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:02:31,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:31,105 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:02:31,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:02:31,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:02:31,203 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_765 (Array Int Int)) (v_ArrVal_764 (Array Int Int)) (v_ArrVal_763 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_763) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_764) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_765) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648)) is different from false [2023-08-27 02:02:31,307 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:31,307 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-27 02:02:31,316 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:31,316 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 1097 treesize of output 1073 [2023-08-27 02:02:31,328 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 258 treesize of output 242 [2023-08-27 02:02:31,334 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 242 treesize of output 234 [2023-08-27 02:02:31,340 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 234 treesize of output 202 [2023-08-27 02:02:31,347 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 102 treesize of output 98 [2023-08-27 02:02:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2023-08-27 02:02:31,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397345893] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:02:31,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:02:31,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-08-27 02:02:31,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869888818] [2023-08-27 02:02:31,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:02:31,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-27 02:02:31,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:31,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-27 02:02:31,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=753, Unknown=3, NotChecked=56, Total=930 [2023-08-27 02:02:31,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 780 [2023-08-27 02:02:31,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 377 flow. Second operand has 31 states, 31 states have (on average 246.3548387096774) internal successors, (7637), 31 states have internal predecessors, (7637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:31,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:31,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 780 [2023-08-27 02:02:31,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:33,444 INFO L124 PetriNetUnfolderBase]: 8299/11379 cut-off events. [2023-08-27 02:02:33,445 INFO L125 PetriNetUnfolderBase]: For 3215/3280 co-relation queries the response was YES. [2023-08-27 02:02:33,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29285 conditions, 11379 events. 8299/11379 cut-off events. For 3215/3280 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 60036 event pairs, 2335 based on Foata normal form. 65/6354 useless extension candidates. Maximal degree in co-relation 29268. Up to 9325 conditions per place. [2023-08-27 02:02:33,490 INFO L140 encePairwiseOnDemand]: 767/780 looper letters, 175 selfloop transitions, 39 changer transitions 0/218 dead transitions. [2023-08-27 02:02:33,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 218 transitions, 1346 flow [2023-08-27 02:02:33,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 02:02:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 02:02:33,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4824 transitions. [2023-08-27 02:02:33,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255060728744939 [2023-08-27 02:02:33,497 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4824 transitions. [2023-08-27 02:02:33,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4824 transitions. [2023-08-27 02:02:33,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:33,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4824 transitions. [2023-08-27 02:02:33,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 253.89473684210526) internal successors, (4824), 19 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:33,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 780.0) internal successors, (15600), 20 states have internal predecessors, (15600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:33,511 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 780.0) internal successors, (15600), 20 states have internal predecessors, (15600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:33,511 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 377 flow. Second operand 19 states and 4824 transitions. [2023-08-27 02:02:33,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 218 transitions, 1346 flow [2023-08-27 02:02:33,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 218 transitions, 1343 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:02:33,528 INFO L231 Difference]: Finished difference. Result has 98 places, 109 transitions, 704 flow [2023-08-27 02:02:33,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=704, PETRI_PLACES=98, PETRI_TRANSITIONS=109} [2023-08-27 02:02:33,529 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 29 predicate places. [2023-08-27 02:02:33,529 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 109 transitions, 704 flow [2023-08-27 02:02:33,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 246.3548387096774) internal successors, (7637), 31 states have internal predecessors, (7637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:33,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:33,530 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:02:33,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-27 02:02:33,735 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,SelfDestructingSolverStorable16 [2023-08-27 02:02:33,735 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:33,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:33,735 INFO L85 PathProgramCache]: Analyzing trace with hash -479272974, now seen corresponding path program 1 times [2023-08-27 02:02:33,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:33,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243724060] [2023-08-27 02:02:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:33,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:02:34,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:34,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243724060] [2023-08-27 02:02:34,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243724060] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:34,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228948557] [2023-08-27 02:02:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:34,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:34,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:34,369 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 02:02:34,370 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 02:02:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:34,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 02:02:34,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:34,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:34,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:34,577 INFO L322 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-27 02:02:34,577 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 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-27 02:02:34,634 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:02:34,679 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 02:02:34,680 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-27 02:02:34,709 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:02:34,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:02:34,756 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:02:34,757 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 02:02:34,788 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:02:34,802 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:02:34,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:34,831 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:02:34,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:34,862 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:02:34,872 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:02:34,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:02:39,005 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_846 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_846))) (let ((.cse0 (select (select .cse1 ~B~0.base) (+ ~B~0.offset 4)))) (or (< 4294967295 .cse0) (<= .cse0 0) (<= 0 (+ .cse0 2147483648 (select (select .cse1 c_~A~0.base) .cse2))))))) (forall ((v_ArrVal_846 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_846))) (let ((.cse3 (select (select .cse4 ~B~0.base) (+ ~B~0.offset 4)))) (or (< .cse3 0) (< 0 .cse3) (<= 0 (+ .cse3 2147483648 (select (select .cse4 c_~A~0.base) .cse2))))))))) is different from false [2023-08-27 02:02:39,597 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:39,598 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 297 treesize of output 214 [2023-08-27 02:02:39,779 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:39,782 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 6444653 treesize of output 6246192 [2023-08-27 02:02:40,623 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:40,623 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13071 treesize of output 12808 [2023-08-27 02:02:40,801 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:40,802 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12799 treesize of output 12672 [2023-08-27 02:02:40,958 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:40,959 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12663 treesize of output 11584 [2023-08-27 02:02:41,118 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:41,119 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11575 treesize of output 11040 [2023-08-27 02:02:41,279 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:41,280 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11031 treesize of output 10768 [2023-08-27 02:02:41,466 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:41,466 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10759 treesize of output 9680 [2023-08-27 02:02:41,631 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:41,631 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9671 treesize of output 9544 [2023-08-27 02:02:41,773 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-27 02:02:41,798 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:41,799 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9535 treesize of output 9000 [2023-08-27 02:04:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:04:17,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228948557] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:04:17,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:04:17,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-27 02:04:17,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425261718] [2023-08-27 02:04:17,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:04:17,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 02:04:17,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:04:17,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 02:04:17,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=671, Unknown=14, NotChecked=54, Total=870 [2023-08-27 02:04:17,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 780 [2023-08-27 02:04:17,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 109 transitions, 704 flow. Second operand has 30 states, 30 states have (on average 256.4) internal successors, (7692), 30 states have internal predecessors, (7692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:04:17,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:04:17,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 780 [2023-08-27 02:04:17,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:04:20,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:22,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:24,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:26,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:28,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:30,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:32,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:34,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:36,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:38,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:40,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:42,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:44,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:46,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:48,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:50,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:52,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:04:53,272 INFO L124 PetriNetUnfolderBase]: 8263/11327 cut-off events. [2023-08-27 02:04:53,272 INFO L125 PetriNetUnfolderBase]: For 7464/7529 co-relation queries the response was YES. [2023-08-27 02:04:53,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31167 conditions, 11327 events. 8263/11327 cut-off events. For 7464/7529 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 60017 event pairs, 2497 based on Foata normal form. 81/6992 useless extension candidates. Maximal degree in co-relation 31143. Up to 9328 conditions per place. [2023-08-27 02:04:53,335 INFO L140 encePairwiseOnDemand]: 771/780 looper letters, 134 selfloop transitions, 27 changer transitions 0/165 dead transitions. [2023-08-27 02:04:53,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 165 transitions, 1192 flow [2023-08-27 02:04:53,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:04:53,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:04:53,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2408 transitions. [2023-08-27 02:04:53,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34301994301994304 [2023-08-27 02:04:53,340 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2408 transitions. [2023-08-27 02:04:53,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2408 transitions. [2023-08-27 02:04:53,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:04:53,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2408 transitions. [2023-08-27 02:04:53,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 267.55555555555554) internal successors, (2408), 9 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:04:53,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 780.0) internal successors, (7800), 10 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:04:53,376 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 780.0) internal successors, (7800), 10 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:04:53,376 INFO L175 Difference]: Start difference. First operand has 98 places, 109 transitions, 704 flow. Second operand 9 states and 2408 transitions. [2023-08-27 02:04:53,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 165 transitions, 1192 flow [2023-08-27 02:04:53,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 165 transitions, 1179 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 02:04:53,395 INFO L231 Difference]: Finished difference. Result has 104 places, 110 transitions, 751 flow [2023-08-27 02:04:53,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=751, PETRI_PLACES=104, PETRI_TRANSITIONS=110} [2023-08-27 02:04:53,395 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 35 predicate places. [2023-08-27 02:04:53,395 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 110 transitions, 751 flow [2023-08-27 02:04:53,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 256.4) internal successors, (7692), 30 states have internal predecessors, (7692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:04:53,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:04:53,396 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:04:53,401 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 02:04:53,601 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,SelfDestructingSolverStorable17 [2023-08-27 02:04:53,601 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:04:53,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:04:53,602 INFO L85 PathProgramCache]: Analyzing trace with hash -479272976, now seen corresponding path program 1 times [2023-08-27 02:04:53,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:04:53,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665982128] [2023-08-27 02:04:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:04:53,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:04:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:04:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 02:04:54,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:04:54,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665982128] [2023-08-27 02:04:54,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665982128] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:04:54,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330788893] [2023-08-27 02:04:54,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:04:54,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:04:54,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:04:54,017 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 02:04:54,020 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 02:04:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:04:54,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 02:04:54,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:04:54,207 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 02:04:54,256 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:04:54,291 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:04:54,291 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 02:04:54,314 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:04:54,324 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:04:54,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:04:54,348 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:04:54,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:04:54,371 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:04:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:04:54,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:04:54,523 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:04:54,523 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-27 02:04:54,529 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:04:54,529 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 277 treesize of output 265 [2023-08-27 02:04:54,533 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 122 treesize of output 106 [2023-08-27 02:04:54,537 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 51 treesize of output 47 [2023-08-27 02:04:54,541 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 54 treesize of output 46 [2023-08-27 02:04:54,677 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:04:54,677 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2023-08-27 02:04:54,710 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 02:04:54,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330788893] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:04:54,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:04:54,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2023-08-27 02:04:54,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222903733] [2023-08-27 02:04:54,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:04:54,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 02:04:54,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:04:54,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 02:04:54,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=588, Unknown=11, NotChecked=0, Total=702 [2023-08-27 02:04:54,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 780 [2023-08-27 02:04:54,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 110 transitions, 751 flow. Second operand has 27 states, 27 states have (on average 264.44444444444446) internal successors, (7140), 27 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:04:54,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:04:54,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 780 [2023-08-27 02:04:54,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:04:56,292 INFO L124 PetriNetUnfolderBase]: 9232/12812 cut-off events. [2023-08-27 02:04:56,292 INFO L125 PetriNetUnfolderBase]: For 9216/9288 co-relation queries the response was YES. [2023-08-27 02:04:56,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35222 conditions, 12812 events. 9232/12812 cut-off events. For 9216/9288 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 71272 event pairs, 1654 based on Foata normal form. 72/7858 useless extension candidates. Maximal degree in co-relation 35197. Up to 7392 conditions per place. [2023-08-27 02:04:56,346 INFO L140 encePairwiseOnDemand]: 764/780 looper letters, 115 selfloop transitions, 62 changer transitions 0/181 dead transitions. [2023-08-27 02:04:56,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 181 transitions, 1395 flow [2023-08-27 02:04:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 02:04:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 02:04:56,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3807 transitions. [2023-08-27 02:04:56,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3486263736263736 [2023-08-27 02:04:56,349 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3807 transitions. [2023-08-27 02:04:56,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3807 transitions. [2023-08-27 02:04:56,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:04:56,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3807 transitions. [2023-08-27 02:04:56,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 271.92857142857144) internal successors, (3807), 14 states have internal predecessors, (3807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:04:56,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 780.0) internal successors, (11700), 15 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:04:56,359 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 780.0) internal successors, (11700), 15 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:04:56,359 INFO L175 Difference]: Start difference. First operand has 104 places, 110 transitions, 751 flow. Second operand 14 states and 3807 transitions. [2023-08-27 02:04:56,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 181 transitions, 1395 flow [2023-08-27 02:04:56,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 181 transitions, 1362 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 02:04:56,379 INFO L231 Difference]: Finished difference. Result has 116 places, 127 transitions, 1021 flow [2023-08-27 02:04:56,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1021, PETRI_PLACES=116, PETRI_TRANSITIONS=127} [2023-08-27 02:04:56,380 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 47 predicate places. [2023-08-27 02:04:56,380 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 127 transitions, 1021 flow [2023-08-27 02:04:56,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 264.44444444444446) internal successors, (7140), 27 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:04:56,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:04:56,380 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:04:56,390 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 02:04:56,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:04:56,586 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:04:56,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:04:56,587 INFO L85 PathProgramCache]: Analyzing trace with hash -479272977, now seen corresponding path program 1 times [2023-08-27 02:04:56,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:04:56,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106166738] [2023-08-27 02:04:56,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:04:56,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:04:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:04:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:04:57,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:04:57,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106166738] [2023-08-27 02:04:57,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106166738] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:04:57,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279506487] [2023-08-27 02:04:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:04:57,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:04:57,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:04:57,189 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 02:04:57,203 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 02:04:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:04:57,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 02:04:57,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:04:57,428 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 02:04:57,481 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:04:57,518 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:04:57,518 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 02:04:57,545 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:04:57,556 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:04:57,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:04:57,581 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:04:57,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:04:57,610 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:04:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:04:57,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:04:57,712 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_996 (Array Int Int)) (v_ArrVal_995 (Array Int Int)) (v_ArrVal_994 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_994) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_995) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_996) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-08-27 02:04:57,748 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:04:57,748 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-08-27 02:04:57,756 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:04:57,757 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 2467 treesize of output 2371 [2023-08-27 02:04:57,764 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 67 treesize of output 63 [2023-08-27 02:04:57,769 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 63 treesize of output 55 [2023-08-27 02:04:57,774 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 70 treesize of output 54 [2023-08-27 02:04:57,899 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:04:57,899 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2023-08-27 02:04:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2023-08-27 02:04:57,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279506487] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:04:57,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:04:57,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 28 [2023-08-27 02:04:57,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701126490] [2023-08-27 02:04:57,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:04:57,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 02:04:57,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:04:57,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 02:04:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=699, Unknown=6, NotChecked=54, Total=870 [2023-08-27 02:04:57,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 780 [2023-08-27 02:04:57,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 127 transitions, 1021 flow. Second operand has 30 states, 30 states have (on average 245.36666666666667) internal successors, (7361), 30 states have internal predecessors, (7361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:04:57,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:04:57,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 780 [2023-08-27 02:04:57,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:04:59,902 INFO L124 PetriNetUnfolderBase]: 9114/12679 cut-off events. [2023-08-27 02:04:59,902 INFO L125 PetriNetUnfolderBase]: For 15428/15500 co-relation queries the response was YES. [2023-08-27 02:04:59,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36588 conditions, 12679 events. 9114/12679 cut-off events. For 15428/15500 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 70843 event pairs, 1484 based on Foata normal form. 88/8295 useless extension candidates. Maximal degree in co-relation 36559. Up to 7310 conditions per place. [2023-08-27 02:04:59,980 INFO L140 encePairwiseOnDemand]: 764/780 looper letters, 110 selfloop transitions, 72 changer transitions 0/186 dead transitions. [2023-08-27 02:04:59,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 186 transitions, 1591 flow [2023-08-27 02:04:59,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 02:04:59,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 02:04:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4524 transitions. [2023-08-27 02:04:59,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32222222222222224 [2023-08-27 02:04:59,985 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4524 transitions. [2023-08-27 02:04:59,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4524 transitions. [2023-08-27 02:04:59,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:04:59,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4524 transitions. [2023-08-27 02:04:59,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 251.33333333333334) internal successors, (4524), 18 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:04:59,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 780.0) internal successors, (14820), 19 states have internal predecessors, (14820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:04:59,998 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 780.0) internal successors, (14820), 19 states have internal predecessors, (14820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:04:59,998 INFO L175 Difference]: Start difference. First operand has 116 places, 127 transitions, 1021 flow. Second operand 18 states and 4524 transitions. [2023-08-27 02:04:59,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 186 transitions, 1591 flow [2023-08-27 02:05:00,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 186 transitions, 1544 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-27 02:05:00,025 INFO L231 Difference]: Finished difference. Result has 130 places, 133 transitions, 1176 flow [2023-08-27 02:05:00,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1176, PETRI_PLACES=130, PETRI_TRANSITIONS=133} [2023-08-27 02:05:00,026 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 61 predicate places. [2023-08-27 02:05:00,026 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 133 transitions, 1176 flow [2023-08-27 02:05:00,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 245.36666666666667) internal successors, (7361), 30 states have internal predecessors, (7361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:00,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:05:00,027 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:05:00,035 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 02:05:00,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:05:00,229 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:05:00,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:05:00,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1993910803, now seen corresponding path program 2 times [2023-08-27 02:05:00,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:05:00,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942409521] [2023-08-27 02:05:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:05:00,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:05:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:05:00,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-27 02:05:00,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:05:00,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942409521] [2023-08-27 02:05:00,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942409521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:05:00,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:05:00,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:05:00,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479845448] [2023-08-27 02:05:00,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:05:00,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:05:00,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:05:00,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:05:00,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:05:00,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 780 [2023-08-27 02:05:00,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 133 transitions, 1176 flow. Second operand has 4 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:00,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:05:00,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 780 [2023-08-27 02:05:00,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:05:02,021 INFO L124 PetriNetUnfolderBase]: 16788/22555 cut-off events. [2023-08-27 02:05:02,021 INFO L125 PetriNetUnfolderBase]: For 48361/50114 co-relation queries the response was YES. [2023-08-27 02:05:02,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70129 conditions, 22555 events. 16788/22555 cut-off events. For 48361/50114 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 125996 event pairs, 6278 based on Foata normal form. 1205/16291 useless extension candidates. Maximal degree in co-relation 70101. Up to 14908 conditions per place. [2023-08-27 02:05:02,106 INFO L140 encePairwiseOnDemand]: 774/780 looper letters, 227 selfloop transitions, 6 changer transitions 0/242 dead transitions. [2023-08-27 02:05:02,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 242 transitions, 2544 flow [2023-08-27 02:05:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:05:02,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:05:02,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1363 transitions. [2023-08-27 02:05:02,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43685897435897436 [2023-08-27 02:05:02,108 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1363 transitions. [2023-08-27 02:05:02,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1363 transitions. [2023-08-27 02:05:02,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:05:02,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1363 transitions. [2023-08-27 02:05:02,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 340.75) internal successors, (1363), 4 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:02,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 780.0) internal successors, (3900), 5 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:02,111 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 780.0) internal successors, (3900), 5 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:02,111 INFO L175 Difference]: Start difference. First operand has 130 places, 133 transitions, 1176 flow. Second operand 4 states and 1363 transitions. [2023-08-27 02:05:02,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 242 transitions, 2544 flow [2023-08-27 02:05:02,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 242 transitions, 2414 flow, removed 8 selfloop flow, removed 10 redundant places. [2023-08-27 02:05:02,147 INFO L231 Difference]: Finished difference. Result has 125 places, 136 transitions, 1123 flow [2023-08-27 02:05:02,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1123, PETRI_PLACES=125, PETRI_TRANSITIONS=136} [2023-08-27 02:05:02,148 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 56 predicate places. [2023-08-27 02:05:02,148 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 136 transitions, 1123 flow [2023-08-27 02:05:02,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:02,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:05:02,149 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:05:02,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 02:05:02,150 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:05:02,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:05:02,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1020880352, now seen corresponding path program 1 times [2023-08-27 02:05:02,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:05:02,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645608467] [2023-08-27 02:05:02,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:05:02,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:05:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:05:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:05:02,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:05:02,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645608467] [2023-08-27 02:05:02,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645608467] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:05:02,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629684998] [2023-08-27 02:05:02,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:05:02,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:05:02,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:05:02,825 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 02:05:02,827 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 02:05:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:05:02,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 02:05:02,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:05:02,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:02,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:03,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:03,020 INFO L322 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-27 02:05:03,021 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-08-27 02:05:03,089 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:05:03,135 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 02:05:03,135 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-27 02:05:03,172 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:05:03,184 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:05:03,207 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:05:03,208 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 02:05:03,239 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:05:03,263 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:05:03,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:03,291 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:05:03,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:03,322 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:05:03,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:03,384 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:05:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 02:05:03,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:05:03,404 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1114 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1114) c_~A~0.base) (+ c_~A~0.offset (* |c_thread2Thread1of1ForFork1_~i~1#1| 4))) 2147483648)) is different from false [2023-08-27 02:05:03,407 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1114 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1114) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648)) is different from false [2023-08-27 02:05:09,770 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:05:09,771 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2023-08-27 02:05:09,794 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:05:09,794 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 34945 treesize of output 34561 [2023-08-27 02:05:09,834 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 263 treesize of output 231 [2023-08-27 02:05:09,848 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 231 treesize of output 223 [2023-08-27 02:05:09,857 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 223 treesize of output 219 [2023-08-27 02:05:09,866 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 219 treesize of output 203 [2023-08-27 02:05:09,876 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 266 treesize of output 202 [2023-08-27 02:05:10,121 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-27 02:05:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:05:10,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629684998] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:05:10,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:05:10,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 31 [2023-08-27 02:05:10,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454404542] [2023-08-27 02:05:10,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:05:10,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 02:05:10,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:05:10,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 02:05:10,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=779, Unknown=18, NotChecked=118, Total=1056 [2023-08-27 02:05:10,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 780 [2023-08-27 02:05:10,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 136 transitions, 1123 flow. Second operand has 33 states, 33 states have (on average 245.3939393939394) internal successors, (8098), 33 states have internal predecessors, (8098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:10,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:05:10,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 780 [2023-08-27 02:05:10,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:05:12,564 INFO L124 PetriNetUnfolderBase]: 13027/18217 cut-off events. [2023-08-27 02:05:12,564 INFO L125 PetriNetUnfolderBase]: For 29393/30180 co-relation queries the response was YES. [2023-08-27 02:05:12,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56086 conditions, 18217 events. 13027/18217 cut-off events. For 29393/30180 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 102752 event pairs, 5079 based on Foata normal form. 954/13876 useless extension candidates. Maximal degree in co-relation 56057. Up to 11258 conditions per place. [2023-08-27 02:05:12,719 INFO L140 encePairwiseOnDemand]: 772/780 looper letters, 175 selfloop transitions, 30 changer transitions 0/209 dead transitions. [2023-08-27 02:05:12,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 209 transitions, 1811 flow [2023-08-27 02:05:12,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:05:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:05:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2319 transitions. [2023-08-27 02:05:12,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33034188034188033 [2023-08-27 02:05:12,722 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2319 transitions. [2023-08-27 02:05:12,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2319 transitions. [2023-08-27 02:05:12,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:05:12,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2319 transitions. [2023-08-27 02:05:12,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 257.6666666666667) internal successors, (2319), 9 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:12,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 780.0) internal successors, (7800), 10 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:12,727 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 780.0) internal successors, (7800), 10 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:12,727 INFO L175 Difference]: Start difference. First operand has 125 places, 136 transitions, 1123 flow. Second operand 9 states and 2319 transitions. [2023-08-27 02:05:12,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 209 transitions, 1811 flow [2023-08-27 02:05:12,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 209 transitions, 1800 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:05:12,786 INFO L231 Difference]: Finished difference. Result has 134 places, 139 transitions, 1264 flow [2023-08-27 02:05:12,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1264, PETRI_PLACES=134, PETRI_TRANSITIONS=139} [2023-08-27 02:05:12,787 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 65 predicate places. [2023-08-27 02:05:12,787 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 139 transitions, 1264 flow [2023-08-27 02:05:12,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 245.3939393939394) internal successors, (8098), 33 states have internal predecessors, (8098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:12,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:05:12,788 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:05:12,793 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 02:05:12,993 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,SelfDestructingSolverStorable21 [2023-08-27 02:05:12,993 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:05:12,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:05:12,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1972211035, now seen corresponding path program 1 times [2023-08-27 02:05:12,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:05:12,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491135035] [2023-08-27 02:05:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:05:12,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:05:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:05:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:05:13,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:05:13,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491135035] [2023-08-27 02:05:13,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491135035] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:05:13,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843110366] [2023-08-27 02:05:13,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:05:13,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:05:13,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:05:13,701 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 02:05:13,708 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 02:05:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:05:13,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-27 02:05:13,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:05:13,920 INFO L322 Elim1Store]: treesize reduction 81, result has 25.7 percent of original size [2023-08-27 02:05:13,921 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 33 [2023-08-27 02:05:14,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:14,039 INFO L322 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2023-08-27 02:05:14,039 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 49 [2023-08-27 02:05:14,160 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:05:14,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:14,259 INFO L322 Elim1Store]: treesize reduction 8, result has 86.0 percent of original size [2023-08-27 02:05:14,259 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 34 treesize of output 72 [2023-08-27 02:05:14,426 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:05:14,445 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:05:14,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:14,482 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:05:14,537 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:05:14,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:14,578 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:05:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:05:14,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:05:14,640 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1201 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1201) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-08-27 02:05:14,729 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1201 (Array Int Int)) (v_ArrVal_1200 (Array Int Int)) (v_ArrVal_1199 (Array Int Int)) (v_ArrVal_1198 (Array Int Int))) (< 0 (+ (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1198) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1199) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1201) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-08-27 02:05:14,798 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:05:14,798 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2023-08-27 02:05:14,806 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:05:14,806 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 2451 treesize of output 2403 [2023-08-27 02:05:14,818 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 290 treesize of output 282 [2023-08-27 02:05:14,839 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 282 treesize of output 250 [2023-08-27 02:05:14,846 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 250 treesize of output 234 [2023-08-27 02:05:14,853 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 118 treesize of output 114 [2023-08-27 02:05:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2023-08-27 02:05:15,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843110366] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:05:15,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:05:15,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 31 [2023-08-27 02:05:15,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309312809] [2023-08-27 02:05:15,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:05:15,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 02:05:15,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:05:15,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 02:05:15,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=798, Unknown=9, NotChecked=118, Total=1056 [2023-08-27 02:05:15,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 780 [2023-08-27 02:05:15,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 139 transitions, 1264 flow. Second operand has 33 states, 33 states have (on average 244.36363636363637) internal successors, (8064), 33 states have internal predecessors, (8064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:15,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:05:15,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 780 [2023-08-27 02:05:15,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:05:25,006 WARN L234 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 87 DAG size of output: 62 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 02:05:36,805 INFO L124 PetriNetUnfolderBase]: 24130/33566 cut-off events. [2023-08-27 02:05:36,806 INFO L125 PetriNetUnfolderBase]: For 68015/69654 co-relation queries the response was YES. [2023-08-27 02:05:36,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107685 conditions, 33566 events. 24130/33566 cut-off events. For 68015/69654 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 206765 event pairs, 6528 based on Foata normal form. 1819/25425 useless extension candidates. Maximal degree in co-relation 107653. Up to 7108 conditions per place. [2023-08-27 02:05:36,985 INFO L140 encePairwiseOnDemand]: 753/780 looper letters, 307 selfloop transitions, 110 changer transitions 0/421 dead transitions. [2023-08-27 02:05:36,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 421 transitions, 3443 flow [2023-08-27 02:05:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-27 02:05:36,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-27 02:05:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 7117 transitions. [2023-08-27 02:05:36,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258699633699634 [2023-08-27 02:05:36,991 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 7117 transitions. [2023-08-27 02:05:36,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 7117 transitions. [2023-08-27 02:05:36,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:05:36,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 7117 transitions. [2023-08-27 02:05:36,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 254.17857142857142) internal successors, (7117), 28 states have internal predecessors, (7117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:37,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 780.0) internal successors, (22620), 29 states have internal predecessors, (22620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:37,007 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 780.0) internal successors, (22620), 29 states have internal predecessors, (22620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:37,007 INFO L175 Difference]: Start difference. First operand has 134 places, 139 transitions, 1264 flow. Second operand 28 states and 7117 transitions. [2023-08-27 02:05:37,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 421 transitions, 3443 flow [2023-08-27 02:05:37,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 421 transitions, 3376 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-27 02:05:37,125 INFO L231 Difference]: Finished difference. Result has 164 places, 194 transitions, 2107 flow [2023-08-27 02:05:37,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2107, PETRI_PLACES=164, PETRI_TRANSITIONS=194} [2023-08-27 02:05:37,126 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 95 predicate places. [2023-08-27 02:05:37,126 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 194 transitions, 2107 flow [2023-08-27 02:05:37,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 244.36363636363637) internal successors, (8064), 33 states have internal predecessors, (8064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:37,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:05:37,127 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:05:37,132 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 02:05:37,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:05:37,333 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:05:37,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:05:37,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1972211034, now seen corresponding path program 1 times [2023-08-27 02:05:37,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:05:37,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305006522] [2023-08-27 02:05:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:05:37,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:05:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:05:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:05:38,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:05:38,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305006522] [2023-08-27 02:05:38,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305006522] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:05:38,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943464012] [2023-08-27 02:05:38,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:05:38,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:05:38,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:05:38,332 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 02:05:38,334 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 02:05:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:05:38,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-27 02:05:38,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:05:38,622 INFO L322 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2023-08-27 02:05:38,622 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2023-08-27 02:05:38,826 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 02:05:38,826 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-27 02:05:39,010 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:05:39,144 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-27 02:05:39,145 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:05:39,248 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 14 treesize of output 16 [2023-08-27 02:05:39,275 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 14 treesize of output 16 [2023-08-27 02:05:39,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:39,365 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:05:39,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:39,462 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:05:39,483 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:05:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:05:39,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:05:40,281 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:05:40,281 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-27 02:05:40,299 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:05:40,299 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 275 treesize of output 269 [2023-08-27 02:05:40,306 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 258 treesize of output 226 [2023-08-27 02:05:40,314 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 226 treesize of output 210 [2023-08-27 02:05:40,321 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 210 treesize of output 202 [2023-08-27 02:05:40,330 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 102 treesize of output 98 [2023-08-27 02:05:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 02:05:41,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943464012] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:05:41,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:05:41,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 30 [2023-08-27 02:05:41,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055006132] [2023-08-27 02:05:41,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:05:41,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 02:05:41,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:05:41,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 02:05:41,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=834, Unknown=25, NotChecked=0, Total=992 [2023-08-27 02:05:41,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 780 [2023-08-27 02:05:41,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 194 transitions, 2107 flow. Second operand has 32 states, 32 states have (on average 244.34375) internal successors, (7819), 32 states have internal predecessors, (7819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:41,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:05:41,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 780 [2023-08-27 02:05:41,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:05:48,901 INFO L124 PetriNetUnfolderBase]: 22599/31543 cut-off events. [2023-08-27 02:05:48,902 INFO L125 PetriNetUnfolderBase]: For 92154/93689 co-relation queries the response was YES. [2023-08-27 02:05:49,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118696 conditions, 31543 events. 22599/31543 cut-off events. For 92154/93689 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 193948 event pairs, 5214 based on Foata normal form. 1795/23912 useless extension candidates. Maximal degree in co-relation 118655. Up to 14060 conditions per place. [2023-08-27 02:05:49,095 INFO L140 encePairwiseOnDemand]: 765/780 looper letters, 204 selfloop transitions, 84 changer transitions 0/292 dead transitions. [2023-08-27 02:05:49,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 292 transitions, 3051 flow [2023-08-27 02:05:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 02:05:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 02:05:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5034 transitions. [2023-08-27 02:05:49,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32269230769230767 [2023-08-27 02:05:49,100 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5034 transitions. [2023-08-27 02:05:49,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5034 transitions. [2023-08-27 02:05:49,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:05:49,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5034 transitions. [2023-08-27 02:05:49,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 251.7) internal successors, (5034), 20 states have internal predecessors, (5034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:49,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 780.0) internal successors, (16380), 21 states have internal predecessors, (16380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:49,111 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 780.0) internal successors, (16380), 21 states have internal predecessors, (16380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:49,111 INFO L175 Difference]: Start difference. First operand has 164 places, 194 transitions, 2107 flow. Second operand 20 states and 5034 transitions. [2023-08-27 02:05:49,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 292 transitions, 3051 flow [2023-08-27 02:05:49,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 292 transitions, 2889 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-08-27 02:05:49,293 INFO L231 Difference]: Finished difference. Result has 174 places, 193 transitions, 2103 flow [2023-08-27 02:05:49,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=1935, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2103, PETRI_PLACES=174, PETRI_TRANSITIONS=193} [2023-08-27 02:05:49,294 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 105 predicate places. [2023-08-27 02:05:49,294 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 193 transitions, 2103 flow [2023-08-27 02:05:49,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 244.34375) internal successors, (7819), 32 states have internal predecessors, (7819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:49,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:05:49,295 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:05:49,301 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 02:05:49,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:05:49,500 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:05:49,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:05:49,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1972211032, now seen corresponding path program 1 times [2023-08-27 02:05:49,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:05:49,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097187962] [2023-08-27 02:05:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:05:49,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:05:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:05:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:05:50,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:05:50,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097187962] [2023-08-27 02:05:50,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097187962] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:05:50,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128415334] [2023-08-27 02:05:50,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:05:50,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:05:50,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:05:50,885 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 02:05:50,914 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 02:05:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:05:51,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-27 02:05:51,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:05:51,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:51,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:51,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:51,144 INFO L322 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-27 02:05:51,144 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-08-27 02:05:51,455 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 02:05:51,579 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 02:05:51,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-27 02:05:51,685 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:05:51,731 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:05:51,835 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:05:51,835 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 02:05:51,918 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:05:51,941 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:05:52,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:52,034 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:05:52,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:52,126 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:05:52,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:05:52,199 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 02:05:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:05:52,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:05:56,517 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((~B~0.offset Int) (~B~0.base Int) (v_ArrVal_1371 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1371))) (let ((.cse0 (select (select .cse1 ~B~0.base) (+ ~B~0.offset 4)))) (or (< 4294967295 .cse0) (<= .cse0 0) (<= 0 (+ .cse0 (select (select .cse1 c_~A~0.base) .cse2) 2147483648)))))) (forall ((~B~0.offset Int) (~B~0.base Int) (v_ArrVal_1371 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1371))) (let ((.cse3 (select (select .cse4 ~B~0.base) (+ ~B~0.offset 4)))) (or (< .cse3 0) (< 0 .cse3) (<= 0 (+ .cse3 (select (select .cse4 c_~A~0.base) .cse2) 2147483648)))))))) is different from false [2023-08-27 02:05:56,799 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_1369 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int) (v_ArrVal_1371 (Array Int Int)) (v_ArrVal_1370 (Array Int Int))) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1369) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1370) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1371))) (let ((.cse0 (select (select .cse1 ~B~0.base) (+ ~B~0.offset 4)))) (or (< 0 .cse0) (< .cse0 0) (<= 0 (+ .cse0 (select (select .cse1 c_~A~0.base) .cse2) 2147483648)))))) (forall ((v_ArrVal_1369 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int) (v_ArrVal_1371 (Array Int Int)) (v_ArrVal_1370 (Array Int Int))) (let ((.cse4 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1369) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1370) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1371))) (let ((.cse3 (select (select .cse4 ~B~0.base) (+ ~B~0.offset 4)))) (or (< 4294967295 .cse3) (<= 0 (+ .cse3 (select (select .cse4 c_~A~0.base) .cse2) 2147483648)) (<= .cse3 0))))))) is different from false [2023-08-27 02:05:56,831 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_1369 (Array Int Int)) (v_ArrVal_1368 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int) (v_ArrVal_1371 (Array Int Int)) (v_ArrVal_1370 (Array Int Int))) (let ((.cse0 (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1368) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1369) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1370) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1371))) (let ((.cse2 (select (select .cse0 ~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse0 c_~A~0.base) .cse1) .cse2 2147483648)) (< .cse2 0) (< 0 .cse2))))) (forall ((v_ArrVal_1369 (Array Int Int)) (v_ArrVal_1368 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int) (v_ArrVal_1371 (Array Int Int)) (v_ArrVal_1370 (Array Int Int))) (let ((.cse3 (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1368) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1369) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1370) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1371))) (let ((.cse4 (select (select .cse3 ~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse3 c_~A~0.base) .cse1) .cse4 2147483648)) (<= .cse4 0) (< 4294967295 .cse4))))))) is different from false [2023-08-27 02:05:57,640 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:05:57,640 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 321 treesize of output 238 [2023-08-27 02:05:58,091 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:05:58,099 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 208734317 treesize of output 205489968 [2023-08-27 02:06:03,505 WARN L234 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 7333 DAG size of output: 1039 (called from [L 729] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-08-27 02:06:03,603 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:03,604 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50767 treesize of output 49720 [2023-08-27 02:06:04,166 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:04,168 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49711 treesize of output 49192 [2023-08-27 02:06:04,778 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:04,779 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49183 treesize of output 48928 [2023-08-27 02:06:05,355 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:05,356 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48919 treesize of output 46816 [2023-08-27 02:06:05,974 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:05,975 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46807 treesize of output 42592 [2023-08-27 02:06:06,566 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:06,567 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42583 treesize of output 42328 [2023-08-27 02:06:07,199 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:07,201 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42319 treesize of output 41272 [2023-08-27 02:06:07,748 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-27 02:06:07,803 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:07,804 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41263 treesize of output 39160 [2023-08-27 02:06:08,445 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:08,446 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39151 treesize of output 38632 [2023-08-27 02:06:09,051 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:09,053 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38623 treesize of output 34408 Received shutdown request... [2023-08-27 02:16:03,122 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 02:16:03,137 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 50 remaining) [2023-08-27 02:16:03,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-08-27 02:16:03,163 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 02:16:03,164 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 02:16:03,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:16:03,342 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. [2023-08-27 02:16:03,345 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 50 remaining) [2023-08-27 02:16:03,345 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 50 remaining) [2023-08-27 02:16:03,345 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 50 remaining) [2023-08-27 02:16:03,345 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 50 remaining) [2023-08-27 02:16:03,345 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 50 remaining) [2023-08-27 02:16:03,345 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 50 remaining) [2023-08-27 02:16:03,345 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 50 remaining) [2023-08-27 02:16:03,346 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 50 remaining) [2023-08-27 02:16:03,346 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 50 remaining) [2023-08-27 02:16:03,346 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 50 remaining) [2023-08-27 02:16:03,346 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 50 remaining) [2023-08-27 02:16:03,346 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 50 remaining) [2023-08-27 02:16:03,346 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 50 remaining) [2023-08-27 02:16:03,346 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 50 remaining) [2023-08-27 02:16:03,346 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 50 remaining) [2023-08-27 02:16:03,346 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 50 remaining) [2023-08-27 02:16:03,346 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 50 remaining) [2023-08-27 02:16:03,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 50 remaining) [2023-08-27 02:16:03,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 50 remaining) [2023-08-27 02:16:03,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 50 remaining) [2023-08-27 02:16:03,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 50 remaining) [2023-08-27 02:16:03,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 50 remaining) [2023-08-27 02:16:03,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 50 remaining) [2023-08-27 02:16:03,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 50 remaining) [2023-08-27 02:16:03,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 50 remaining) [2023-08-27 02:16:03,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 50 remaining) [2023-08-27 02:16:03,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 50 remaining) [2023-08-27 02:16:03,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 50 remaining) [2023-08-27 02:16:03,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 50 remaining) [2023-08-27 02:16:03,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 50 remaining) [2023-08-27 02:16:03,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 50 remaining) [2023-08-27 02:16:03,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 50 remaining) [2023-08-27 02:16:03,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18ASSERT_VIOLATIONASSERT (16 of 50 remaining) [2023-08-27 02:16:03,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 50 remaining) [2023-08-27 02:16:03,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 50 remaining) [2023-08-27 02:16:03,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 50 remaining) [2023-08-27 02:16:03,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 50 remaining) [2023-08-27 02:16:03,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 50 remaining) [2023-08-27 02:16:03,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 50 remaining) [2023-08-27 02:16:03,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 50 remaining) [2023-08-27 02:16:03,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 50 remaining) [2023-08-27 02:16:03,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 50 remaining) [2023-08-27 02:16:03,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 50 remaining) [2023-08-27 02:16:03,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 50 remaining) [2023-08-27 02:16:03,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 50 remaining) [2023-08-27 02:16:03,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 50 remaining) [2023-08-27 02:16:03,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 50 remaining) [2023-08-27 02:16:03,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 50 remaining) [2023-08-27 02:16:03,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 50 remaining) [2023-08-27 02:16:03,351 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:16:03,363 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 02:16:03,363 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 02:16:03,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 02:16:03 BasicIcfg [2023-08-27 02:16:03,365 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 02:16:03,365 INFO L158 Benchmark]: Toolchain (without parser) took 848397.27ms. Allocated memory was 352.3MB in the beginning and 2.7GB in the end (delta: 2.4GB). Free memory was 328.0MB in the beginning and 1.1GB in the end (delta: -726.1MB). Peak memory consumption was 2.2GB. Max. memory is 16.0GB. [2023-08-27 02:16:03,365 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 352.3MB. Free memory is still 329.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:16:03,365 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.05ms. Allocated memory is still 352.3MB. Free memory was 328.0MB in the beginning and 316.2MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 02:16:03,365 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.92ms. Allocated memory is still 352.3MB. Free memory was 315.6MB in the beginning and 313.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:16:03,365 INFO L158 Benchmark]: Boogie Preprocessor took 46.34ms. Allocated memory is still 352.3MB. Free memory was 313.0MB in the beginning and 310.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:16:03,366 INFO L158 Benchmark]: RCFGBuilder took 784.87ms. Allocated memory is still 352.3MB. Free memory was 310.9MB in the beginning and 291.4MB in the end (delta: 19.5MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-08-27 02:16:03,366 INFO L158 Benchmark]: TraceAbstraction took 847355.23ms. Allocated memory was 352.3MB in the beginning and 2.7GB in the end (delta: 2.4GB). Free memory was 290.5MB in the beginning and 1.1GB in the end (delta: -763.6MB). Peak memory consumption was 2.1GB. Max. memory is 16.0GB. [2023-08-27 02:16:03,366 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 352.3MB. Free memory is still 329.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 157.05ms. Allocated memory is still 352.3MB. Free memory was 328.0MB in the beginning and 316.2MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.92ms. Allocated memory is still 352.3MB. Free memory was 315.6MB in the beginning and 313.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 46.34ms. Allocated memory is still 352.3MB. Free memory was 313.0MB in the beginning and 310.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 784.87ms. Allocated memory is still 352.3MB. Free memory was 310.9MB in the beginning and 291.4MB in the end (delta: 19.5MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * TraceAbstraction took 847355.23ms. Allocated memory was 352.3MB in the beginning and 2.7GB in the end (delta: 2.4GB). Free memory was 290.5MB in the beginning and 1.1GB in the end (delta: -763.6MB). Peak memory consumption was 2.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.2s, 333 PlacesBefore, 69 PlacesAfterwards, 354 TransitionsBefore, 67 TransitionsAfterwards, 5064 CoEnabledTransitionPairs, 8 FixpointIterations, 256 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 61 TrivialYvCompositions, 11 ConcurrentYvCompositions, 23 ChoiceCompositions, 412 TotalNumberOfCompositions, 8918 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5989, independent: 5841, independent conditional: 0, independent unconditional: 5841, 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: 2663, independent: 2629, independent conditional: 0, independent unconditional: 2629, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5989, independent: 3212, independent conditional: 0, independent unconditional: 3212, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 2663, unknown conditional: 0, unknown unconditional: 2663] , Statistics on independence cache: Total cache size (in pairs): 230, Positive cache size: 213, Positive conditional cache size: 0, Positive unconditional cache size: 213, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 107]: 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 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 108]: 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 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - TimeoutResultAtElement [Line: 106]: 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 17 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 14ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 406 locations, 50 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: 847.2s, OverallIterations: 25, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 86.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 16.4s, HoareTripleCheckerStatistics: 64 mSolverCounterUnknown, 2495 SdHoareTripleChecker+Valid, 46.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2495 mSDsluCounter, 217 SdHoareTripleChecker+Invalid, 45.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1290 IncrementalHoareTripleChecker+Unchecked, 192 mSDsCounter, 811 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12185 IncrementalHoareTripleChecker+Invalid, 14350 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 811 mSolverCounterUnsat, 25 mSDtfsCounter, 12185 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 606 GetRequests, 165 SyntacticMatches, 16 SemanticMatches, 425 ConstructedPredicates, 8 IntricatePredicates, 2 DeprecatedPredicates, 3135 ImplicationChecksByTransitivity, 35.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2107occurred in iteration=23, InterpolantAutomatonStates: 201, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 123.5s InterpolantComputationTime, 441 NumberOfCodeBlocks, 431 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 557 ConstructedInterpolants, 105 QuantifiedInterpolants, 10228 SizeOfPredicates, 86 NumberOfNonLiveVariables, 4363 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 57 InterpolantComputations, 9 PerfectInterpolantSequences, 140/346 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