/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-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 01:59:28,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 01:59:28,366 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 01:59:28,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 01:59:28,371 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 01:59:28,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 01:59:28,403 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 01:59:28,403 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 01:59:28,404 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 01:59:28,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 01:59:28,408 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 01:59:28,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 01:59:28,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 01:59:28,409 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 01:59:28,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 01:59:28,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 01:59:28,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 01:59:28,410 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 01:59:28,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 01:59:28,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 01:59:28,411 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 01:59:28,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 01:59:28,412 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 01:59:28,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 01:59:28,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 01:59:28,413 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 01:59:28,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 01:59:28,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:59:28,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 01:59:28,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 01:59:28,415 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 01:59:28,415 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 01:59:28,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 01:59:28,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 01:59:28,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 01:59:28,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 01:59:28,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 01:59:28,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 01:59:28,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 01:59:28,706 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 01:59:28,707 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 01:59:28,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-08-27 01:59:29,907 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 01:59:30,119 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 01:59:30,119 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-08-27 01:59:30,125 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d59b63cb4/b06f9c92efd349c4b29beb0c7e43a114/FLAG67056ae5c [2023-08-27 01:59:30,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d59b63cb4/b06f9c92efd349c4b29beb0c7e43a114 [2023-08-27 01:59:30,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 01:59:30,139 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 01:59:30,140 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 01:59:30,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 01:59:30,142 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 01:59:30,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:59:30" (1/1) ... [2023-08-27 01:59:30,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337f96b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:59:30, skipping insertion in model container [2023-08-27 01:59:30,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:59:30" (1/1) ... [2023-08-27 01:59:30,161 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 01:59:30,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:59:30,302 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 01:59:30,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:59:30,337 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:59:30,338 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:59:30,343 INFO L206 MainTranslator]: Completed translation [2023-08-27 01:59:30,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:59:30 WrapperNode [2023-08-27 01:59:30,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 01:59:30,345 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 01:59:30,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 01:59:30,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 01:59:30,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:59:30" (1/1) ... [2023-08-27 01:59:30,376 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:59:30" (1/1) ... [2023-08-27 01:59:30,419 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 294 [2023-08-27 01:59:30,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 01:59:30,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 01:59:30,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 01:59:30,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 01:59:30,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:59:30" (1/1) ... [2023-08-27 01:59:30,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:59:30" (1/1) ... [2023-08-27 01:59:30,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:59:30" (1/1) ... [2023-08-27 01:59:30,443 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:59:30" (1/1) ... [2023-08-27 01:59:30,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:59:30" (1/1) ... [2023-08-27 01:59:30,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:59:30" (1/1) ... [2023-08-27 01:59:30,465 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:59:30" (1/1) ... [2023-08-27 01:59:30,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:59:30" (1/1) ... [2023-08-27 01:59:30,484 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 01:59:30,484 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 01:59:30,485 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 01:59:30,485 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 01:59:30,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:59:30" (1/1) ... [2023-08-27 01:59:30,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:59:30,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:59:30,515 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 01:59:30,543 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 01:59:30,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 01:59:30,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 01:59:30,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 01:59:30,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 01:59:30,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 01:59:30,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 01:59:30,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 01:59:30,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 01:59:30,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 01:59:30,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 01:59:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 01:59:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 01:59:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 01:59:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 01:59:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 01:59:30,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 01:59:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 01:59:30,559 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 01:59:30,687 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 01:59:30,695 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 01:59:31,203 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 01:59:31,446 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 01:59:31,447 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-27 01:59:31,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:59:31 BoogieIcfgContainer [2023-08-27 01:59:31,450 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 01:59:31,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 01:59:31,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 01:59:31,455 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 01:59:31,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:59:30" (1/3) ... [2023-08-27 01:59:31,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28372020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:59:31, skipping insertion in model container [2023-08-27 01:59:31,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:59:30" (2/3) ... [2023-08-27 01:59:31,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28372020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:59:31, skipping insertion in model container [2023-08-27 01:59:31,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:59:31" (3/3) ... [2023-08-27 01:59:31,457 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2023-08-27 01:59:31,472 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 01:59:31,473 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2023-08-27 01:59:31,473 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 01:59:31,638 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 01:59:31,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 368 transitions, 760 flow [2023-08-27 01:59:31,841 INFO L124 PetriNetUnfolderBase]: 31/365 cut-off events. [2023-08-27 01:59:31,842 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 01:59:31,849 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 01:59:31,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 347 places, 368 transitions, 760 flow [2023-08-27 01:59:31,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 333 places, 354 transitions, 726 flow [2023-08-27 01:59:31,862 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 01:59:31,875 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 333 places, 354 transitions, 726 flow [2023-08-27 01:59:31,876 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 333 places, 354 transitions, 726 flow [2023-08-27 01:59:31,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 354 transitions, 726 flow [2023-08-27 01:59:31,924 INFO L124 PetriNetUnfolderBase]: 31/354 cut-off events. [2023-08-27 01:59:31,924 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 01:59:31,926 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 01:59:31,929 INFO L119 LiptonReduction]: Number of co-enabled transitions 5064 [2023-08-27 01:59:50,344 INFO L134 LiptonReduction]: Checked pairs total: 8918 [2023-08-27 01:59:50,344 INFO L136 LiptonReduction]: Total number of compositions: 412 [2023-08-27 01:59:50,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 01:59:50,361 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;@27378e65, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 01:59:50,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-08-27 01:59:50,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 01:59:50,363 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 01:59:50,364 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 01:59:50,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:59:50,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 01:59:50,365 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 01:59:50,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:59:50,369 INFO L85 PathProgramCache]: Analyzing trace with hash 49426, now seen corresponding path program 1 times [2023-08-27 01:59:50,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:59:50,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714404010] [2023-08-27 01:59:50,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:50,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:59:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:59:50,694 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 01:59:50,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:59:50,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714404010] [2023-08-27 01:59:50,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714404010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:59:50,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:59:50,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:59:50,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106057940] [2023-08-27 01:59:50,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:59:50,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:59:50,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:59:50,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:59:50,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:59:50,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 780 [2023-08-27 01:59:50,738 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 01:59:50,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:59:50,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 780 [2023-08-27 01:59:50,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:59:51,537 INFO L124 PetriNetUnfolderBase]: 4020/5234 cut-off events. [2023-08-27 01:59:51,538 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2023-08-27 01:59:51,546 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 01:59:51,576 INFO L140 encePairwiseOnDemand]: 755/780 looper letters, 54 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2023-08-27 01:59:51,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 286 flow [2023-08-27 01:59:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:59:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:59:51,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2023-08-27 01:59:51,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307692307692308 [2023-08-27 01:59:51,600 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2023-08-27 01:59:51,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2023-08-27 01:59:51,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:59:51,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2023-08-27 01:59:51,612 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 01:59:51,623 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 01:59:51,625 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 01:59:51,626 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 152 flow. Second operand 3 states and 1008 transitions. [2023-08-27 01:59:51,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 286 flow [2023-08-27 01:59:51,634 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 01:59:51,636 INFO L231 Difference]: Finished difference. Result has 59 places, 69 transitions, 220 flow [2023-08-27 01:59:51,638 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 01:59:51,641 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -10 predicate places. [2023-08-27 01:59:51,642 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 69 transitions, 220 flow [2023-08-27 01:59:51,642 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 01:59:51,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:59:51,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:59:51,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 01:59:51,644 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 01:59:51,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:59:51,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1533642, now seen corresponding path program 1 times [2023-08-27 01:59:51,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:59:51,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913884071] [2023-08-27 01:59:51,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:51,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:59:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:59:51,744 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 01:59:51,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:59:51,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913884071] [2023-08-27 01:59:51,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913884071] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:59:51,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:59:51,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:59:51,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196805159] [2023-08-27 01:59:51,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:59:51,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:59:51,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:59:51,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:59:51,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:59:51,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 780 [2023-08-27 01:59:51,750 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 01:59:51,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:59:51,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 780 [2023-08-27 01:59:51,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:59:52,350 INFO L124 PetriNetUnfolderBase]: 4020/5231 cut-off events. [2023-08-27 01:59:52,351 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-08-27 01:59:52,356 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 01:59:52,381 INFO L140 encePairwiseOnDemand]: 771/780 looper letters, 51 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2023-08-27 01:59:52,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 332 flow [2023-08-27 01:59:52,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:59:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:59:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 982 transitions. [2023-08-27 01:59:52,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41965811965811967 [2023-08-27 01:59:52,385 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 982 transitions. [2023-08-27 01:59:52,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 982 transitions. [2023-08-27 01:59:52,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:59:52,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 982 transitions. [2023-08-27 01:59:52,387 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 01:59:52,391 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 01:59:52,393 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 01:59:52,393 INFO L175 Difference]: Start difference. First operand has 59 places, 69 transitions, 220 flow. Second operand 3 states and 982 transitions. [2023-08-27 01:59:52,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 332 flow [2023-08-27 01:59:52,395 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 01:59:52,397 INFO L231 Difference]: Finished difference. Result has 56 places, 66 transitions, 208 flow [2023-08-27 01:59:52,397 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 01:59:52,399 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -13 predicate places. [2023-08-27 01:59:52,399 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 66 transitions, 208 flow [2023-08-27 01:59:52,400 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 01:59:52,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:59:52,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:59:52,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 01:59:52,404 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 01:59:52,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:59:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1533644, now seen corresponding path program 1 times [2023-08-27 01:59:52,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:59:52,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806380443] [2023-08-27 01:59:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:52,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:59:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:59:52,461 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 01:59:52,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:59:52,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806380443] [2023-08-27 01:59:52,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806380443] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:59:52,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614548011] [2023-08-27 01:59:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:52,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:59:52,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:59:52,507 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 01:59:52,508 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 01:59:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:59:52,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:59:52,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:59:52,673 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 01:59:52,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:59:52,686 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 01:59:52,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614548011] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:59:52,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:59:52,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:59:52,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946878896] [2023-08-27 01:59:52,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:59:52,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:59:52,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:59:52,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:59:52,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:59:52,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 780 [2023-08-27 01:59:52,693 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 01:59:52,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:59:52,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 780 [2023-08-27 01:59:52,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:59:53,340 INFO L124 PetriNetUnfolderBase]: 4041/5261 cut-off events. [2023-08-27 01:59:53,341 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-08-27 01:59:53,345 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 01:59:53,371 INFO L140 encePairwiseOnDemand]: 766/780 looper letters, 51 selfloop transitions, 41 changer transitions 0/96 dead transitions. [2023-08-27 01:59:53,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 96 transitions, 542 flow [2023-08-27 01:59:53,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:59:53,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:59:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1955 transitions. [2023-08-27 01:59:53,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41773504273504275 [2023-08-27 01:59:53,377 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1955 transitions. [2023-08-27 01:59:53,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1955 transitions. [2023-08-27 01:59:53,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:59:53,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1955 transitions. [2023-08-27 01:59:53,383 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 01:59:53,390 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 01:59:53,393 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 01:59:53,393 INFO L175 Difference]: Start difference. First operand has 56 places, 66 transitions, 208 flow. Second operand 6 states and 1955 transitions. [2023-08-27 01:59:53,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 96 transitions, 542 flow [2023-08-27 01:59:53,396 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 01:59:53,398 INFO L231 Difference]: Finished difference. Result has 62 places, 96 transitions, 461 flow [2023-08-27 01:59:53,399 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 01:59:53,400 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -7 predicate places. [2023-08-27 01:59:53,400 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 96 transitions, 461 flow [2023-08-27 01:59:53,401 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 01:59:53,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:59:53,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 01:59:53,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 01:59:53,607 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 01:59:53,608 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 01:59:53,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:59:53,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1474967161, now seen corresponding path program 1 times [2023-08-27 01:59:53,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:59:53,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414890770] [2023-08-27 01:59:53,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:53,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:59:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:59:53,732 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 01:59:53,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:59:53,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414890770] [2023-08-27 01:59:53,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414890770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:59:53,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:59:53,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:59:53,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140380412] [2023-08-27 01:59:53,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:59:53,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:59:53,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:59:53,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:59:53,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:59:53,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 780 [2023-08-27 01:59:53,736 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 01:59:53,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:59:53,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 780 [2023-08-27 01:59:53,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:59:54,298 INFO L124 PetriNetUnfolderBase]: 4040/5260 cut-off events. [2023-08-27 01:59:54,299 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-27 01:59:54,305 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 01:59:54,326 INFO L140 encePairwiseOnDemand]: 777/780 looper letters, 89 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-08-27 01:59:54,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 95 transitions, 639 flow [2023-08-27 01:59:54,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:59:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:59:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 909 transitions. [2023-08-27 01:59:54,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38846153846153847 [2023-08-27 01:59:54,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 909 transitions. [2023-08-27 01:59:54,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 909 transitions. [2023-08-27 01:59:54,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:59:54,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 909 transitions. [2023-08-27 01:59:54,332 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 01:59:54,336 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 01:59:54,338 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 01:59:54,338 INFO L175 Difference]: Start difference. First operand has 62 places, 96 transitions, 461 flow. Second operand 3 states and 909 transitions. [2023-08-27 01:59:54,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 95 transitions, 639 flow [2023-08-27 01:59:54,341 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 01:59:54,344 INFO L231 Difference]: Finished difference. Result has 63 places, 95 transitions, 396 flow [2023-08-27 01:59:54,344 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 01:59:54,345 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -6 predicate places. [2023-08-27 01:59:54,346 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 95 transitions, 396 flow [2023-08-27 01:59:54,346 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 01:59:54,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:59:54,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 01:59:54,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 01:59:54,347 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 01:59:54,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:59:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1553334657, now seen corresponding path program 1 times [2023-08-27 01:59:54,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:59:54,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733740337] [2023-08-27 01:59:54,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:54,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:59:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:59:54,490 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 01:59:54,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:59:54,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733740337] [2023-08-27 01:59:54,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733740337] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:59:54,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381750293] [2023-08-27 01:59:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:54,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:59:54,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:59:54,497 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 01:59:54,500 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 01:59:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:59:54,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 01:59:54,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:59:54,638 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 01:59:54,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:59:54,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381750293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:59:54,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:59:54,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-08-27 01:59:54,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129559310] [2023-08-27 01:59:54,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:59:54,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:59:54,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:59:54,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:59:54,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:59:54,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 780 [2023-08-27 01:59:54,644 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 01:59:54,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:59:54,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 780 [2023-08-27 01:59:54,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:59:55,254 INFO L124 PetriNetUnfolderBase]: 4034/5254 cut-off events. [2023-08-27 01:59:55,254 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-27 01:59:55,260 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 01:59:55,282 INFO L140 encePairwiseOnDemand]: 769/780 looper letters, 73 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2023-08-27 01:59:55,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 89 transitions, 537 flow [2023-08-27 01:59:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:59:55,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:59:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1201 transitions. [2023-08-27 01:59:55,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38493589743589746 [2023-08-27 01:59:55,286 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1201 transitions. [2023-08-27 01:59:55,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1201 transitions. [2023-08-27 01:59:55,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:59:55,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1201 transitions. [2023-08-27 01:59:55,288 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 01:59:55,293 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 01:59:55,295 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 01:59:55,295 INFO L175 Difference]: Start difference. First operand has 63 places, 95 transitions, 396 flow. Second operand 4 states and 1201 transitions. [2023-08-27 01:59:55,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 89 transitions, 537 flow [2023-08-27 01:59:55,297 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 01:59:55,299 INFO L231 Difference]: Finished difference. Result has 65 places, 89 transitions, 387 flow [2023-08-27 01:59:55,299 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 01:59:55,301 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -4 predicate places. [2023-08-27 01:59:55,301 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 89 transitions, 387 flow [2023-08-27 01:59:55,302 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 01:59:55,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:59:55,302 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 01:59:55,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 01:59:55,513 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 01:59:55,515 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 01:59:55,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:59:55,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1554423918, now seen corresponding path program 2 times [2023-08-27 01:59:55,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:59:55,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684385068] [2023-08-27 01:59:55,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:55,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:59:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:59:55,610 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 01:59:55,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:59:55,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684385068] [2023-08-27 01:59:55,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684385068] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:59:55,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471341982] [2023-08-27 01:59:55,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:59:55,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:59:55,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:59:55,613 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 01:59:55,616 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 01:59:55,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:59:55,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:59:55,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:59:55,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:59:55,751 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 01:59:55,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:59:55,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471341982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:59:55,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:59:55,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 01:59:55,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346472444] [2023-08-27 01:59:55,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:59:55,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:59:55,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:59:55,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:59:55,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:59:55,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 780 [2023-08-27 01:59:55,758 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 01:59:55,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:59:55,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 780 [2023-08-27 01:59:55,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:59:56,262 INFO L124 PetriNetUnfolderBase]: 4034/5253 cut-off events. [2023-08-27 01:59:56,262 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-08-27 01:59:56,268 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 01:59:56,286 INFO L140 encePairwiseOnDemand]: 777/780 looper letters, 79 selfloop transitions, 5 changer transitions 0/88 dead transitions. [2023-08-27 01:59:56,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 545 flow [2023-08-27 01:59:56,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:59:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:59:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 988 transitions. [2023-08-27 01:59:56,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2023-08-27 01:59:56,289 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 988 transitions. [2023-08-27 01:59:56,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 988 transitions. [2023-08-27 01:59:56,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:59:56,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 988 transitions. [2023-08-27 01:59:56,292 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 01:59:56,295 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 01:59:56,295 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 01:59:56,296 INFO L175 Difference]: Start difference. First operand has 65 places, 89 transitions, 387 flow. Second operand 3 states and 988 transitions. [2023-08-27 01:59:56,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 545 flow [2023-08-27 01:59:56,297 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 01:59:56,298 INFO L231 Difference]: Finished difference. Result has 64 places, 88 transitions, 374 flow [2023-08-27 01:59:56,298 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 01:59:56,299 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2023-08-27 01:59:56,299 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 88 transitions, 374 flow [2023-08-27 01:59:56,299 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 01:59:56,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:59:56,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:59:56,308 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 01:59:56,505 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 01:59:56,505 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 01:59:56,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:59:56,506 INFO L85 PathProgramCache]: Analyzing trace with hash -909951207, now seen corresponding path program 1 times [2023-08-27 01:59:56,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:59:56,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064505499] [2023-08-27 01:59:56,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:56,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:59:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:59:56,807 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 01:59:56,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:59:56,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064505499] [2023-08-27 01:59:56,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064505499] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:59:56,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420526401] [2023-08-27 01:59:56,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:56,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:59:56,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:59:56,809 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 01:59:56,811 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 01:59:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:59:56,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 01:59:56,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:59:56,952 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 01:59:56,969 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 01:59:56,994 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 01:59:56,995 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 01:59:57,017 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 01:59:57,029 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 01:59:57,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:59:57,093 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:59:57,093 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 01:59:57,102 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:59:57,102 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 01:59:57,106 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 01:59:57,146 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 01:59:57,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420526401] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:59:57,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:59:57,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 01:59:57,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599787822] [2023-08-27 01:59:57,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:59:57,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 01:59:57,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:59:57,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 01:59:57,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=117, Unknown=1, NotChecked=0, Total=156 [2023-08-27 01:59:57,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 780 [2023-08-27 01:59:57,153 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 01:59:57,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:59:57,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 780 [2023-08-27 01:59:57,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:59:57,857 INFO L124 PetriNetUnfolderBase]: 4031/5249 cut-off events. [2023-08-27 01:59:57,857 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-08-27 01:59:57,863 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 01:59:57,882 INFO L140 encePairwiseOnDemand]: 772/780 looper letters, 64 selfloop transitions, 16 changer transitions 0/84 dead transitions. [2023-08-27 01:59:57,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 513 flow [2023-08-27 01:59:57,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:59:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:59:57,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1692 transitions. [2023-08-27 01:59:57,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36153846153846153 [2023-08-27 01:59:57,886 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1692 transitions. [2023-08-27 01:59:57,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1692 transitions. [2023-08-27 01:59:57,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:59:57,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1692 transitions. [2023-08-27 01:59:57,890 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 01:59:57,896 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 01:59:57,897 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 01:59:57,897 INFO L175 Difference]: Start difference. First operand has 64 places, 88 transitions, 374 flow. Second operand 6 states and 1692 transitions. [2023-08-27 01:59:57,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 513 flow [2023-08-27 01:59:57,898 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 01:59:57,900 INFO L231 Difference]: Finished difference. Result has 66 places, 84 transitions, 375 flow [2023-08-27 01:59:57,900 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 01:59:57,900 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2023-08-27 01:59:57,900 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 84 transitions, 375 flow [2023-08-27 01:59:57,902 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 01:59:57,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:59:57,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:59:57,911 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 01:59:58,107 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 01:59:58,108 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 01:59:58,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:59:58,108 INFO L85 PathProgramCache]: Analyzing trace with hash -909951220, now seen corresponding path program 1 times [2023-08-27 01:59:58,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:59:58,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807654859] [2023-08-27 01:59:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:58,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:59:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:59:58,343 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 01:59:58,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:59:58,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807654859] [2023-08-27 01:59:58,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807654859] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:59:58,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522002729] [2023-08-27 01:59:58,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:58,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:59:58,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:59:58,344 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 01:59:58,370 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 01:59:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:59:58,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 01:59:58,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:59:58,484 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 01:59:58,496 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 01:59:58,514 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 01:59:58,514 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 01:59:58,530 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 01:59:58,541 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 01:59:58,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:59:58,591 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:59:58,591 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 01:59:58,598 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:59:58,598 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 01:59:58,603 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 01:59:58,637 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 01:59:58,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522002729] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:59:58,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:59:58,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 01:59:58,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607474516] [2023-08-27 01:59:58,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:59:58,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 01:59:58,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:59:58,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 01:59:58,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-27 01:59:58,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 780 [2023-08-27 01:59:58,644 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 01:59:58,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:59:58,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 780 [2023-08-27 01:59:58,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:59:59,401 INFO L124 PetriNetUnfolderBase]: 4028/5245 cut-off events. [2023-08-27 01:59:59,402 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-08-27 01:59:59,407 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 01:59:59,424 INFO L140 encePairwiseOnDemand]: 772/780 looper letters, 60 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2023-08-27 01:59:59,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 506 flow [2023-08-27 01:59:59,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:59:59,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:59:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1691 transitions. [2023-08-27 01:59:59,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3613247863247863 [2023-08-27 01:59:59,429 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1691 transitions. [2023-08-27 01:59:59,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1691 transitions. [2023-08-27 01:59:59,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:59:59,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1691 transitions. [2023-08-27 01:59:59,439 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 01:59:59,445 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 01:59:59,446 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 01:59:59,446 INFO L175 Difference]: Start difference. First operand has 66 places, 84 transitions, 375 flow. Second operand 6 states and 1691 transitions. [2023-08-27 01:59:59,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 506 flow [2023-08-27 01:59:59,448 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 01:59:59,449 INFO L231 Difference]: Finished difference. Result has 67 places, 80 transitions, 356 flow [2023-08-27 01:59:59,449 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 01:59:59,451 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2023-08-27 01:59:59,451 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 80 transitions, 356 flow [2023-08-27 01:59:59,452 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 01:59:59,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:59:59,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:59:59,460 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 01:59:59,658 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 01:59:59,658 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 01:59:59,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:59:59,659 INFO L85 PathProgramCache]: Analyzing trace with hash -909951210, now seen corresponding path program 1 times [2023-08-27 01:59:59,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:59:59,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143040183] [2023-08-27 01:59:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:59,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:59:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:00,144 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 02:00:00,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:00:00,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143040183] [2023-08-27 02:00:00,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143040183] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:00:00,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303875611] [2023-08-27 02:00:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:00,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:00:00,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:00:00,147 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 02:00:00,149 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 02:00:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:00,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 02:00:00,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:00:00,333 INFO L322 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-27 02:00:00,334 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 02:00:00,354 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 02:00:00,385 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 02:00:00,385 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 02:00:00,413 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 02:00:00,436 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:00:00,437 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 02:00:00,449 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 02:00:00,453 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 02:00:00,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:00:00,668 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:00,668 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 02:00:00,678 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:00,678 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 02:00:00,686 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 02:00:00,691 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 02:00:00,796 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 02:00:00,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303875611] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:00:00,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:00:00,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-27 02:00:00,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429954016] [2023-08-27 02:00:00,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:00:00,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 02:00:00,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:00:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 02:00:00,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=190, Unknown=3, NotChecked=0, Total=240 [2023-08-27 02:00:00,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 780 [2023-08-27 02:00:00,805 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 02:00:00,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:00:00,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 780 [2023-08-27 02:00:00,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:00:01,605 INFO L124 PetriNetUnfolderBase]: 4025/5241 cut-off events. [2023-08-27 02:00:01,605 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-27 02:00:01,612 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 02:00:01,632 INFO L140 encePairwiseOnDemand]: 772/780 looper letters, 56 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2023-08-27 02:00:01,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 76 transitions, 479 flow [2023-08-27 02:00:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:00:01,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:00:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1690 transitions. [2023-08-27 02:00:01,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2023-08-27 02:00:01,637 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1690 transitions. [2023-08-27 02:00:01,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1690 transitions. [2023-08-27 02:00:01,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:00:01,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1690 transitions. [2023-08-27 02:00:01,641 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 02:00:01,647 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 02:00:01,647 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 02:00:01,648 INFO L175 Difference]: Start difference. First operand has 67 places, 80 transitions, 356 flow. Second operand 6 states and 1690 transitions. [2023-08-27 02:00:01,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 76 transitions, 479 flow [2023-08-27 02:00:01,649 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 02:00:01,650 INFO L231 Difference]: Finished difference. Result has 66 places, 76 transitions, 335 flow [2023-08-27 02:00:01,650 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 02:00:01,651 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2023-08-27 02:00:01,651 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 76 transitions, 335 flow [2023-08-27 02:00:01,652 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 02:00:01,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:00:01,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:00:01,661 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 02:00:01,857 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 02:00:01,858 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 02:00:01,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:00:01,858 INFO L85 PathProgramCache]: Analyzing trace with hash -909951211, now seen corresponding path program 1 times [2023-08-27 02:00:01,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:00:01,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702827827] [2023-08-27 02:00:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:01,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:00:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:02,204 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 02:00:02,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:00:02,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702827827] [2023-08-27 02:00:02,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702827827] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:00:02,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276636262] [2023-08-27 02:00:02,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:02,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:00:02,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:00:02,209 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 02:00:02,212 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 02:00:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:02,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 02:00:02,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:00:02,384 INFO L322 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-27 02:00:02,385 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 02:00:02,398 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 02:00:02,429 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 02:00:02,430 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 02:00:02,456 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 02:00:02,490 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-27 02:00:02,490 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 02:00:02,511 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 02:00:02,524 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 02:00:02,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:00:02,637 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:02,637 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 02:00:02,646 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:02,646 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 02:00:02,653 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 02:00:02,659 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 02:00:02,737 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 02:00:02,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276636262] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:00:02,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:00:02,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-27 02:00:02,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915729172] [2023-08-27 02:00:02,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:00:02,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 02:00:02,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:00:02,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 02:00:02,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=237, Unknown=2, NotChecked=0, Total=306 [2023-08-27 02:00:02,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 780 [2023-08-27 02:00:02,745 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 02:00:02,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:00:02,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 780 [2023-08-27 02:00:02,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:00:03,424 INFO L124 PetriNetUnfolderBase]: 4022/5237 cut-off events. [2023-08-27 02:00:03,424 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-27 02:00:03,431 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 02:00:03,444 INFO L140 encePairwiseOnDemand]: 772/780 looper letters, 52 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2023-08-27 02:00:03,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 72 transitions, 450 flow [2023-08-27 02:00:03,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:00:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:00:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1689 transitions. [2023-08-27 02:00:03,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608974358974359 [2023-08-27 02:00:03,451 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1689 transitions. [2023-08-27 02:00:03,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1689 transitions. [2023-08-27 02:00:03,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:00:03,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1689 transitions. [2023-08-27 02:00:03,455 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 02:00:03,460 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 02:00:03,461 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 02:00:03,461 INFO L175 Difference]: Start difference. First operand has 66 places, 76 transitions, 335 flow. Second operand 6 states and 1689 transitions. [2023-08-27 02:00:03,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 72 transitions, 450 flow [2023-08-27 02:00:03,462 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 02:00:03,463 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 339 flow [2023-08-27 02:00:03,464 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 02:00:03,464 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2023-08-27 02:00:03,464 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 339 flow [2023-08-27 02:00:03,465 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 02:00:03,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:00:03,465 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 02:00:03,474 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 02:00:03,673 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 02:00:03,674 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 02:00:03,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:00:03,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1855025915, now seen corresponding path program 1 times [2023-08-27 02:00:03,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:00:03,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762584270] [2023-08-27 02:00:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:03,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:00:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:03,780 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 02:00:03,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:00:03,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762584270] [2023-08-27 02:00:03,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762584270] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:00:03,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249441908] [2023-08-27 02:00:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:03,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:00:03,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:00:03,785 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 02:00:03,800 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 02:00:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:03,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 02:00:03,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:00:03,963 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 02:00:03,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:00:04,006 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 02:00:04,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249441908] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:00:04,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:00:04,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-27 02:00:04,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016796110] [2023-08-27 02:00:04,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:00:04,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:00:04,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:00:04,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:00:04,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:00:04,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 780 [2023-08-27 02:00:04,014 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 02:00:04,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:00:04,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 780 [2023-08-27 02:00:04,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:00:05,060 INFO L124 PetriNetUnfolderBase]: 7991/10374 cut-off events. [2023-08-27 02:00:05,061 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-08-27 02:00:05,081 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 02:00:05,117 INFO L140 encePairwiseOnDemand]: 770/780 looper letters, 106 selfloop transitions, 23 changer transitions 0/133 dead transitions. [2023-08-27 02:00:05,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 133 transitions, 759 flow [2023-08-27 02:00:05,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:00:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:00:05,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2684 transitions. [2023-08-27 02:00:05,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38233618233618233 [2023-08-27 02:00:05,124 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2684 transitions. [2023-08-27 02:00:05,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2684 transitions. [2023-08-27 02:00:05,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:00:05,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2684 transitions. [2023-08-27 02:00:05,130 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 02:00:05,138 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 02:00:05,139 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 02:00:05,139 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 339 flow. Second operand 9 states and 2684 transitions. [2023-08-27 02:00:05,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 133 transitions, 759 flow [2023-08-27 02:00:05,141 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 02:00:05,143 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 392 flow [2023-08-27 02:00:05,143 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 02:00:05,143 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 3 predicate places. [2023-08-27 02:00:05,143 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 392 flow [2023-08-27 02:00:05,144 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 02:00:05,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:00:05,144 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-27 02:00:05,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 02:00:05,350 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 02:00:05,350 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 02:00:05,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:00:05,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1503618357, now seen corresponding path program 2 times [2023-08-27 02:00:05,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:00:05,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869817653] [2023-08-27 02:00:05,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:05,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:00:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:05,420 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 02:00:05,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:00:05,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869817653] [2023-08-27 02:00:05,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869817653] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:00:05,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956903896] [2023-08-27 02:00:05,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:00:05,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:00:05,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:00:05,425 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 02:00:05,448 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 02:00:05,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 02:00:05,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:00:05,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 02:00:05,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:00:05,574 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 02:00:05,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:00:05,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956903896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:00:05,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:00:05,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-08-27 02:00:05,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372472385] [2023-08-27 02:00:05,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:00:05,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:00:05,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:00:05,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:00:05,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-27 02:00:05,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 780 [2023-08-27 02:00:05,579 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 02:00:05,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:00:05,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 780 [2023-08-27 02:00:05,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:00:06,331 INFO L124 PetriNetUnfolderBase]: 7095/9252 cut-off events. [2023-08-27 02:00:06,331 INFO L125 PetriNetUnfolderBase]: For 555/555 co-relation queries the response was YES. [2023-08-27 02:00:06,344 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 44413 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 02:00:06,370 INFO L140 encePairwiseOnDemand]: 776/780 looper letters, 68 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-08-27 02:00:06,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 497 flow [2023-08-27 02:00:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:00:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:00:06,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 947 transitions. [2023-08-27 02:00:06,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4047008547008547 [2023-08-27 02:00:06,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 947 transitions. [2023-08-27 02:00:06,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 947 transitions. [2023-08-27 02:00:06,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:00:06,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 947 transitions. [2023-08-27 02:00:06,424 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 02:00:06,427 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 02:00:06,427 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 02:00:06,427 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 392 flow. Second operand 3 states and 947 transitions. [2023-08-27 02:00:06,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 497 flow [2023-08-27 02:00:06,429 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 02:00:06,430 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 292 flow [2023-08-27 02:00:06,430 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 02:00:06,430 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -6 predicate places. [2023-08-27 02:00:06,430 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 292 flow [2023-08-27 02:00:06,431 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 02:00:06,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:00:06,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:00:06,441 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 02:00:06,631 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 02:00:06,632 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:00:06,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:00:06,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1052215508, now seen corresponding path program 1 times [2023-08-27 02:00:06,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:00:06,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274897253] [2023-08-27 02:00:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:06,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:00:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:06,685 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 02:00:06,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:00:06,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274897253] [2023-08-27 02:00:06,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274897253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:00:06,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:00:06,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:00:06,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555227762] [2023-08-27 02:00:06,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:00:06,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:00:06,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:00:06,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:00:06,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:00:06,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 780 [2023-08-27 02:00:06,688 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 02:00:06,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:00:06,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 780 [2023-08-27 02:00:06,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:00:07,494 INFO L124 PetriNetUnfolderBase]: 9955/13302 cut-off events. [2023-08-27 02:00:07,494 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-08-27 02:00:07,504 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 69983 event pairs, 3934 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 02:00:07,535 INFO L140 encePairwiseOnDemand]: 776/780 looper letters, 92 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2023-08-27 02:00:07,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 98 transitions, 534 flow [2023-08-27 02:00:07,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:00:07,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:00:07,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1052 transitions. [2023-08-27 02:00:07,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4495726495726496 [2023-08-27 02:00:07,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1052 transitions. [2023-08-27 02:00:07,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1052 transitions. [2023-08-27 02:00:07,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:00:07,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1052 transitions. [2023-08-27 02:00:07,542 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 02:00:07,545 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 02:00:07,545 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 02:00:07,545 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 292 flow. Second operand 3 states and 1052 transitions. [2023-08-27 02:00:07,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 98 transitions, 534 flow [2023-08-27 02:00:07,546 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 02:00:07,548 INFO L231 Difference]: Finished difference. Result has 65 places, 75 transitions, 310 flow [2023-08-27 02:00:07,548 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 02:00:07,548 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -4 predicate places. [2023-08-27 02:00:07,548 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 75 transitions, 310 flow [2023-08-27 02:00:07,549 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 02:00:07,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:00:07,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:00:07,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 02:00:07,549 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:00:07,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:00:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1052215509, now seen corresponding path program 1 times [2023-08-27 02:00:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:00:07,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762160688] [2023-08-27 02:00:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:07,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:00:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:07,653 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 02:00:07,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:00:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762160688] [2023-08-27 02:00:07,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762160688] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:00:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546790438] [2023-08-27 02:00:07,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:07,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:00:07,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:00:07,657 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 02:00:07,668 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 02:00:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:07,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 02:00:07,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:00:07,872 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 02:00:07,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:00:07,926 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 02:00:07,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546790438] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:00:07,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:00:07,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-27 02:00:07,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849502932] [2023-08-27 02:00:07,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:00:07,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 02:00:07,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:00:07,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 02:00:07,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-08-27 02:00:07,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 780 [2023-08-27 02:00:07,932 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 02:00:07,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:00:07,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 780 [2023-08-27 02:00:07,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:00:08,572 INFO L124 PetriNetUnfolderBase]: 5690/7781 cut-off events. [2023-08-27 02:00:08,572 INFO L125 PetriNetUnfolderBase]: For 991/991 co-relation queries the response was YES. [2023-08-27 02:00:08,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16988 conditions, 7781 events. 5690/7781 cut-off events. For 991/991 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 37969 event pairs, 3507 based on Foata normal form. 124/4374 useless extension candidates. Maximal degree in co-relation 16976. Up to 6268 conditions per place. [2023-08-27 02:00:08,602 INFO L140 encePairwiseOnDemand]: 766/780 looper letters, 101 selfloop transitions, 22 changer transitions 0/126 dead transitions. [2023-08-27 02:00:08,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 126 transitions, 672 flow [2023-08-27 02:00:08,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:00:08,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:00:08,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2362 transitions. [2023-08-27 02:00:08,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378525641025641 [2023-08-27 02:00:08,608 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2362 transitions. [2023-08-27 02:00:08,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2362 transitions. [2023-08-27 02:00:08,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:00:08,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2362 transitions. [2023-08-27 02:00:08,613 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 02:00:08,618 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 02:00:08,619 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 02:00:08,619 INFO L175 Difference]: Start difference. First operand has 65 places, 75 transitions, 310 flow. Second operand 8 states and 2362 transitions. [2023-08-27 02:00:08,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 126 transitions, 672 flow [2023-08-27 02:00:08,622 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 02:00:08,623 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 379 flow [2023-08-27 02:00:08,623 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 02:00:08,624 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 4 predicate places. [2023-08-27 02:00:08,624 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 379 flow [2023-08-27 02:00:08,625 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 02:00:08,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:00:08,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:00:08,631 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 02:00:08,830 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 02:00:08,831 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:00:08,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:00:08,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1412561371, now seen corresponding path program 1 times [2023-08-27 02:00:08,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:00:08,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976489638] [2023-08-27 02:00:08,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:08,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:00:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:08,937 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 02:00:08,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:00:08,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976489638] [2023-08-27 02:00:08,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976489638] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:00:08,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179032347] [2023-08-27 02:00:08,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:08,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:00:08,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:00:08,941 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 02:00:08,966 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 02:00:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:09,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 02:00:09,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:00:09,143 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 02:00:09,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:00:09,186 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 02:00:09,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179032347] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:00:09,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:00:09,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 02:00:09,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272692835] [2023-08-27 02:00:09,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:00:09,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 02:00:09,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:00:09,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 02:00:09,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-08-27 02:00:09,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 780 [2023-08-27 02:00:09,191 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 02:00:09,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:00:09,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 780 [2023-08-27 02:00:09,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:00:09,755 INFO L124 PetriNetUnfolderBase]: 4412/6148 cut-off events. [2023-08-27 02:00:09,756 INFO L125 PetriNetUnfolderBase]: For 1104/1359 co-relation queries the response was YES. [2023-08-27 02:00:09,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14309 conditions, 6148 events. 4412/6148 cut-off events. For 1104/1359 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 32218 event pairs, 2929 based on Foata normal form. 255/3563 useless extension candidates. Maximal degree in co-relation 14294. Up to 5648 conditions per place. [2023-08-27 02:00:09,772 INFO L140 encePairwiseOnDemand]: 770/780 looper letters, 87 selfloop transitions, 22 changer transitions 0/113 dead transitions. [2023-08-27 02:00:09,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 113 transitions, 683 flow [2023-08-27 02:00:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:00:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:00:09,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2312 transitions. [2023-08-27 02:00:09,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37051282051282053 [2023-08-27 02:00:09,779 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2312 transitions. [2023-08-27 02:00:09,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2312 transitions. [2023-08-27 02:00:09,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:00:09,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2312 transitions. [2023-08-27 02:00:09,784 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 02:00:09,789 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 02:00:09,789 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 02:00:09,789 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 379 flow. Second operand 8 states and 2312 transitions. [2023-08-27 02:00:09,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 113 transitions, 683 flow [2023-08-27 02:00:09,792 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 02:00:09,793 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 401 flow [2023-08-27 02:00:09,793 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 02:00:09,793 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 8 predicate places. [2023-08-27 02:00:09,794 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 401 flow [2023-08-27 02:00:09,794 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 02:00:09,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:00:09,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:00:09,800 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 02:00:10,000 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 02:00:10,000 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:00:10,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:00:10,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1544052953, now seen corresponding path program 1 times [2023-08-27 02:00:10,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:00:10,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612189106] [2023-08-27 02:00:10,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:10,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:00:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:10,064 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 02:00:10,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:00:10,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612189106] [2023-08-27 02:00:10,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612189106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:00:10,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:00:10,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:00:10,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106173080] [2023-08-27 02:00:10,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:00:10,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:00:10,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:00:10,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:00:10,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:00:10,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 780 [2023-08-27 02:00:10,068 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 02:00:10,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:00:10,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 780 [2023-08-27 02:00:10,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:00:10,973 INFO L124 PetriNetUnfolderBase]: 6497/8924 cut-off events. [2023-08-27 02:00:10,974 INFO L125 PetriNetUnfolderBase]: For 2124/2499 co-relation queries the response was YES. [2023-08-27 02:00:10,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21891 conditions, 8924 events. 6497/8924 cut-off events. For 2124/2499 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 48582 event pairs, 3185 based on Foata normal form. 375/5313 useless extension candidates. Maximal degree in co-relation 21874. Up to 6062 conditions per place. [2023-08-27 02:00:11,027 INFO L140 encePairwiseOnDemand]: 776/780 looper letters, 106 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2023-08-27 02:00:11,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 113 transitions, 724 flow [2023-08-27 02:00:11,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:00:11,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:00:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1058 transitions. [2023-08-27 02:00:11,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45213675213675214 [2023-08-27 02:00:11,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1058 transitions. [2023-08-27 02:00:11,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1058 transitions. [2023-08-27 02:00:11,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:00:11,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1058 transitions. [2023-08-27 02:00:11,034 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 02:00:11,038 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 02:00:11,038 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 02:00:11,038 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 401 flow. Second operand 3 states and 1058 transitions. [2023-08-27 02:00:11,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 113 transitions, 724 flow [2023-08-27 02:00:11,045 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 02:00:11,046 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 377 flow [2023-08-27 02:00:11,046 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 02:00:11,048 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 6 predicate places. [2023-08-27 02:00:11,048 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 377 flow [2023-08-27 02:00:11,048 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 02:00:11,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:00:11,048 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:00:11,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 02:00:11,049 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:00:11,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:00:11,049 INFO L85 PathProgramCache]: Analyzing trace with hash -479272973, now seen corresponding path program 2 times [2023-08-27 02:00:11,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:00:11,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805906282] [2023-08-27 02:00:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:11,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:00:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:12,110 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 02:00:12,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:00:12,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805906282] [2023-08-27 02:00:12,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805906282] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:00:12,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592376622] [2023-08-27 02:00:12,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:00:12,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:00:12,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:00:12,111 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 02:00:12,113 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 02:00:12,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:00:12,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:00:12,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 02:00:12,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:00:12,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:00:12,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:00:12,309 INFO L322 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-27 02:00:12,309 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 02:00:12,379 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 02:00:12,435 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 02:00:12,435 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 02:00:12,475 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 02:00:12,489 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 02:00:12,535 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:00:12,536 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 02:00:12,565 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 02:00:12,583 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 02:00:12,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:00:12,623 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 02:00:12,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:00:12,664 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 02:00:12,674 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 02:00:12,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:00:12,774 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 02:00:12,904 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:12,904 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 02:00:12,914 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:12,914 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 02:00:12,929 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 02:00:12,935 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 02:00:12,942 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 02:00:12,952 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 02:00:13,308 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 02:00:13,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592376622] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:00:13,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:00:13,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-08-27 02:00:13,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551846225] [2023-08-27 02:00:13,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:00:13,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-27 02:00:13,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:00:13,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-27 02:00:13,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=737, Unknown=12, NotChecked=56, Total=930 [2023-08-27 02:00:13,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 780 [2023-08-27 02:00:13,319 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 02:00:13,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:00:13,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 780 [2023-08-27 02:00:13,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:00:15,382 INFO L124 PetriNetUnfolderBase]: 8306/11386 cut-off events. [2023-08-27 02:00:15,383 INFO L125 PetriNetUnfolderBase]: For 3382/3448 co-relation queries the response was YES. [2023-08-27 02:00:15,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29301 conditions, 11386 events. 8306/11386 cut-off events. For 3382/3448 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 59834 event pairs, 2500 based on Foata normal form. 66/6356 useless extension candidates. Maximal degree in co-relation 29284. Up to 9351 conditions per place. [2023-08-27 02:00:15,447 INFO L140 encePairwiseOnDemand]: 769/780 looper letters, 182 selfloop transitions, 29 changer transitions 0/215 dead transitions. [2023-08-27 02:00:15,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 215 transitions, 1318 flow [2023-08-27 02:00:15,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 02:00:15,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 02:00:15,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3839 transitions. [2023-08-27 02:00:15,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3281196581196581 [2023-08-27 02:00:15,453 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3839 transitions. [2023-08-27 02:00:15,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3839 transitions. [2023-08-27 02:00:15,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:00:15,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3839 transitions. [2023-08-27 02:00:15,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 255.93333333333334) internal successors, (3839), 15 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:00:15,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 780.0) internal successors, (12480), 16 states have internal predecessors, (12480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:00:15,470 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 780.0) internal successors, (12480), 16 states have internal predecessors, (12480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:00:15,471 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 377 flow. Second operand 15 states and 3839 transitions. [2023-08-27 02:00:15,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 215 transitions, 1318 flow [2023-08-27 02:00:15,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 215 transitions, 1315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:00:15,488 INFO L231 Difference]: Finished difference. Result has 90 places, 100 transitions, 561 flow [2023-08-27 02:00:15,488 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=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=561, PETRI_PLACES=90, PETRI_TRANSITIONS=100} [2023-08-27 02:00:15,488 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 21 predicate places. [2023-08-27 02:00:15,488 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 100 transitions, 561 flow [2023-08-27 02:00:15,489 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 02:00:15,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:00:15,490 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:00:15,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 02:00:15,696 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 02:00:15,696 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:00:15,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:00:15,696 INFO L85 PathProgramCache]: Analyzing trace with hash -479272974, now seen corresponding path program 1 times [2023-08-27 02:00:15,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:00:15,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844807583] [2023-08-27 02:00:15,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:15,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:00:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:16,788 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 02:00:16,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:00:16,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844807583] [2023-08-27 02:00:16,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844807583] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:00:16,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987208539] [2023-08-27 02:00:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:00:16,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:00:16,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:00:16,790 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 02:00:16,815 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 02:00:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:00:16,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 02:00:16,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:00:16,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:00:16,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:00:17,025 INFO L322 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-27 02:00:17,026 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 02:00:17,100 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 02:00:17,156 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 02:00:17,158 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 02:00:17,201 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 02:00:17,220 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 02:00:17,262 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:00:17,262 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 02:00:17,306 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 02:00:17,321 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 02:00:17,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:00:17,359 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 02:00:17,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:00:17,398 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 02:00:17,409 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 02:00:17,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:00:19,602 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 02:00:19,646 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_845 (Array Int Int)) (v_ArrVal_846 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_845) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_846))) (let ((.cse0 (select (select .cse1 ~B~0.base) (+ ~B~0.offset 4)))) (or (< .cse0 0) (<= 0 (+ .cse0 (select (select .cse1 c_~A~0.base) .cse2) 2147483648)) (< 0 .cse0))))) (forall ((v_ArrVal_845 (Array Int Int)) (v_ArrVal_846 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_845) |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) (< 4294967295 .cse3) (<= 0 (+ .cse3 (select (select .cse4 c_~A~0.base) .cse2) 2147483648)))))))) is different from false [2023-08-27 02:00:19,673 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_845 (Array Int Int)) (v_ArrVal_844 (Array Int Int)) (v_ArrVal_846 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_844) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_845) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_846))) (let ((.cse0 (select (select .cse1 ~B~0.base) (+ ~B~0.offset 4)))) (or (< 0 .cse0) (< .cse0 0) (<= 0 (+ (select (select .cse1 c_~A~0.base) .cse2) 2147483648 .cse0)))))) (forall ((v_ArrVal_845 (Array Int Int)) (v_ArrVal_844 (Array Int Int)) (v_ArrVal_846 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse4 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_844) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_845) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_846))) (let ((.cse3 (select (select .cse4 ~B~0.base) (+ ~B~0.offset 4)))) (or (< 4294967295 .cse3) (<= .cse3 0) (<= 0 (+ (select (select .cse4 c_~A~0.base) .cse2) 2147483648 .cse3)))))))) is different from false [2023-08-27 02:00:20,182 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:20,182 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 02:00:20,442 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:20,447 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 02:00:21,755 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:21,756 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 02:00:21,999 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:22,001 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 02:00:22,226 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:22,227 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 02:00:22,417 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:22,418 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 02:00:22,613 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:22,614 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 02:00:22,830 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:22,831 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 02:00:23,033 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:23,034 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 02:00:23,184 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-27 02:00:23,219 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:00:23,220 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 02:02:06,213 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 02:02:06,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987208539] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:02:06,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:02:06,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-08-27 02:02:06,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135316409] [2023-08-27 02:02:06,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:02:06,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-27 02:02:06,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:06,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-27 02:02:06,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=655, Unknown=5, NotChecked=162, Total=930 [2023-08-27 02:02:06,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 780 [2023-08-27 02:02:06,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 100 transitions, 561 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 02:02:06,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:06,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 780 [2023-08-27 02:02:06,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:13,527 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 02:02:15,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:02:17,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:02:19,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:02:21,380 WARN L539 Checker$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 02:02:23,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:02:25,414 WARN L539 Checker$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 02:02:27,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:02:29,469 WARN L539 Checker$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 02:02:31,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:02:33,535 WARN L539 Checker$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 02:02:35,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:02:37,610 WARN L539 Checker$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 02:02:39,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:02:41,654 WARN L539 Checker$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 02:02:43,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 02:02:45,806 WARN L539 Checker$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 02:02:47,826 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 02:02:48,367 INFO L124 PetriNetUnfolderBase]: 8263/11327 cut-off events. [2023-08-27 02:02:48,367 INFO L125 PetriNetUnfolderBase]: For 7477/7542 co-relation queries the response was YES. [2023-08-27 02:02:48,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30871 conditions, 11327 events. 8263/11327 cut-off events. For 7477/7542 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 59362 event pairs, 2497 based on Foata normal form. 81/7038 useless extension candidates. Maximal degree in co-relation 30851. Up to 9326 conditions per place. [2023-08-27 02:02:48,433 INFO L140 encePairwiseOnDemand]: 769/780 looper letters, 180 selfloop transitions, 31 changer transitions 0/215 dead transitions. [2023-08-27 02:02:48,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 215 transitions, 1409 flow [2023-08-27 02:02:48,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 02:02:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 02:02:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3837 transitions. [2023-08-27 02:02:48,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32794871794871794 [2023-08-27 02:02:48,439 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3837 transitions. [2023-08-27 02:02:48,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3837 transitions. [2023-08-27 02:02:48,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:48,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3837 transitions. [2023-08-27 02:02:48,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 255.8) internal successors, (3837), 15 states have internal predecessors, (3837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:48,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 780.0) internal successors, (12480), 16 states have internal predecessors, (12480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:48,454 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 780.0) internal successors, (12480), 16 states have internal predecessors, (12480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:02:48,454 INFO L175 Difference]: Start difference. First operand has 90 places, 100 transitions, 561 flow. Second operand 15 states and 3837 transitions. [2023-08-27 02:02:48,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 215 transitions, 1409 flow [2023-08-27 02:02:48,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 215 transitions, 1396 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 02:02:48,471 INFO L231 Difference]: Finished difference. Result has 102 places, 102 transitions, 622 flow [2023-08-27 02:02:48,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=622, PETRI_PLACES=102, PETRI_TRANSITIONS=102} [2023-08-27 02:02:48,472 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 33 predicate places. [2023-08-27 02:02:48,472 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 102 transitions, 622 flow [2023-08-27 02:02:48,473 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 02:02:48,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:48,473 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:02:48,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-27 02:02:48,674 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 02:02:48,674 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:48,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:48,674 INFO L85 PathProgramCache]: Analyzing trace with hash -479272976, now seen corresponding path program 1 times [2023-08-27 02:02:48,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:48,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153113169] [2023-08-27 02:02:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:48,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:49,188 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 02:02:49,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:49,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153113169] [2023-08-27 02:02:49,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153113169] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:49,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200419083] [2023-08-27 02:02:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:49,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:49,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:49,190 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 02:02:49,193 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 02:02:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:49,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 02:02:49,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:49,426 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 02:02:49,487 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 02:02:49,532 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:02:49,532 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 02:02:49,564 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 02:02:49,585 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 02:02:49,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:49,619 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 02:02:49,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:49,650 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 02:02:49,661 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 02:02:49,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:02:49,702 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_921 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_921) c_~B~0.base) (+ 4 c_~B~0.offset)) 4294967296)) is different from false [2023-08-27 02:02:49,830 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:49,830 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 02:02:49,839 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:49,840 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 02:02:49,845 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 02:02:49,851 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 02:02:49,857 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 54 treesize of output 46 [2023-08-27 02:02:50,039 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:50,039 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 02:02:50,082 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 02:02:50,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200419083] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:02:50,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:02:50,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2023-08-27 02:02:50,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700506532] [2023-08-27 02:02:50,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:02:50,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 02:02:50,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:50,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 02:02:50,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=547, Unknown=10, NotChecked=48, Total=702 [2023-08-27 02:02:50,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 780 [2023-08-27 02:02:50,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 102 transitions, 622 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 02:02:50,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:50,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 780 [2023-08-27 02:02:50,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:51,820 INFO L124 PetriNetUnfolderBase]: 9232/12812 cut-off events. [2023-08-27 02:02:51,820 INFO L125 PetriNetUnfolderBase]: For 8592/8664 co-relation queries the response was YES. [2023-08-27 02:02:51,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34919 conditions, 12812 events. 9232/12812 cut-off events. For 8592/8664 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 70564 event pairs, 1654 based on Foata normal form. 72/7920 useless extension candidates. Maximal degree in co-relation 34898. Up to 7392 conditions per place. [2023-08-27 02:02:51,902 INFO L140 encePairwiseOnDemand]: 764/780 looper letters, 115 selfloop transitions, 54 changer transitions 0/173 dead transitions. [2023-08-27 02:02:51,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 173 transitions, 1240 flow [2023-08-27 02:02:51,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 02:02:51,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 02:02:51,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3807 transitions. [2023-08-27 02:02:51,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3486263736263736 [2023-08-27 02:02:51,906 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3807 transitions. [2023-08-27 02:02:51,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3807 transitions. [2023-08-27 02:02:51,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:51,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3807 transitions. [2023-08-27 02:02:51,911 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 02:02:51,919 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 02:02:51,920 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 02:02:51,920 INFO L175 Difference]: Start difference. First operand has 102 places, 102 transitions, 622 flow. Second operand 14 states and 3807 transitions. [2023-08-27 02:02:51,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 173 transitions, 1240 flow [2023-08-27 02:02:51,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 173 transitions, 1173 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-08-27 02:02:51,949 INFO L231 Difference]: Finished difference. Result has 108 places, 119 transitions, 832 flow [2023-08-27 02:02:51,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=832, PETRI_PLACES=108, PETRI_TRANSITIONS=119} [2023-08-27 02:02:51,950 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 39 predicate places. [2023-08-27 02:02:51,950 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 119 transitions, 832 flow [2023-08-27 02:02:51,951 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 02:02:51,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:51,951 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:02:51,958 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 02:02:52,157 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 02:02:52,158 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:52,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:52,158 INFO L85 PathProgramCache]: Analyzing trace with hash -479272977, now seen corresponding path program 1 times [2023-08-27 02:02:52,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:52,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429445955] [2023-08-27 02:02:52,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:52,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:52,868 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 02:02:52,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:52,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429445955] [2023-08-27 02:02:52,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429445955] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:52,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970772186] [2023-08-27 02:02:52,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:52,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:52,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:52,870 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 02:02:52,894 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 02:02:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:53,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 02:02:53,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:53,112 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 02:02:53,179 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 02:02:53,226 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:02:53,227 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 02:02:53,255 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 02:02:53,267 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 02:02:53,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:53,294 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 02:02:53,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:53,324 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 16 treesize of output 18 [2023-08-27 02:02:53,333 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 02:02:53,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:02:53,526 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:53,526 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 02:02:53,537 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:53,538 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 02:02:53,555 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 02:02:53,561 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 02:02:53,567 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 02:02:53,696 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:02:53,697 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 02:02:53,736 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 02:02:53,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970772186] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:02:53,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:02:53,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 28 [2023-08-27 02:02:53,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568607071] [2023-08-27 02:02:53,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:02:53,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 02:02:53,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:53,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 02:02:53,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=743, Unknown=9, NotChecked=0, Total=870 [2023-08-27 02:02:53,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 780 [2023-08-27 02:02:53,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 119 transitions, 832 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 02:02:53,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:53,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 780 [2023-08-27 02:02:53,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:55,765 INFO L124 PetriNetUnfolderBase]: 9196/12762 cut-off events. [2023-08-27 02:02:55,765 INFO L125 PetriNetUnfolderBase]: For 10182/10254 co-relation queries the response was YES. [2023-08-27 02:02:55,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35862 conditions, 12762 events. 9196/12762 cut-off events. For 10182/10254 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 70157 event pairs, 1654 based on Foata normal form. 88/8420 useless extension candidates. Maximal degree in co-relation 35839. Up to 7376 conditions per place. [2023-08-27 02:02:55,821 INFO L140 encePairwiseOnDemand]: 764/780 looper letters, 110 selfloop transitions, 64 changer transitions 0/178 dead transitions. [2023-08-27 02:02:55,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 178 transitions, 1378 flow [2023-08-27 02:02:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 02:02:55,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 02:02:55,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4524 transitions. [2023-08-27 02:02:55,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32222222222222224 [2023-08-27 02:02:55,827 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4524 transitions. [2023-08-27 02:02:55,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4524 transitions. [2023-08-27 02:02:55,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:55,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4524 transitions. [2023-08-27 02:02:55,833 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 02:02:55,842 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 02:02:55,844 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 02:02:55,844 INFO L175 Difference]: Start difference. First operand has 108 places, 119 transitions, 832 flow. Second operand 18 states and 4524 transitions. [2023-08-27 02:02:55,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 178 transitions, 1378 flow [2023-08-27 02:02:55,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 178 transitions, 1337 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-27 02:02:55,866 INFO L231 Difference]: Finished difference. Result has 122 places, 125 transitions, 969 flow [2023-08-27 02:02:55,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=969, PETRI_PLACES=122, PETRI_TRANSITIONS=125} [2023-08-27 02:02:55,867 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 53 predicate places. [2023-08-27 02:02:55,867 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 125 transitions, 969 flow [2023-08-27 02:02:55,868 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 02:02:55,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:55,868 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:02:55,876 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 02:02:56,073 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 02:02:56,074 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:56,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:56,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1993910803, now seen corresponding path program 2 times [2023-08-27 02:02:56,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:56,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99939564] [2023-08-27 02:02:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:56,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:56,137 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 02:02:56,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:56,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99939564] [2023-08-27 02:02:56,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99939564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:02:56,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:02:56,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:02:56,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131343642] [2023-08-27 02:02:56,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:02:56,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:02:56,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:02:56,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:02:56,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:02:56,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 780 [2023-08-27 02:02:56,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 125 transitions, 969 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 02:02:56,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:02:56,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 780 [2023-08-27 02:02:56,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:02:57,627 INFO L124 PetriNetUnfolderBase]: 15272/21057 cut-off events. [2023-08-27 02:02:57,627 INFO L125 PetriNetUnfolderBase]: For 26570/26714 co-relation queries the response was YES. [2023-08-27 02:02:57,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59805 conditions, 21057 events. 15272/21057 cut-off events. For 26570/26714 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 118040 event pairs, 6275 based on Foata normal form. 144/13954 useless extension candidates. Maximal degree in co-relation 59783. Up to 13943 conditions per place. [2023-08-27 02:02:57,766 INFO L140 encePairwiseOnDemand]: 774/780 looper letters, 221 selfloop transitions, 6 changer transitions 0/236 dead transitions. [2023-08-27 02:02:57,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 236 transitions, 2275 flow [2023-08-27 02:02:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:02:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:02:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1363 transitions. [2023-08-27 02:02:57,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43685897435897436 [2023-08-27 02:02:57,768 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1363 transitions. [2023-08-27 02:02:57,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1363 transitions. [2023-08-27 02:02:57,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:02:57,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1363 transitions. [2023-08-27 02:02:57,770 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 02:02:57,771 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 02:02:57,771 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 02:02:57,771 INFO L175 Difference]: Start difference. First operand has 122 places, 125 transitions, 969 flow. Second operand 4 states and 1363 transitions. [2023-08-27 02:02:57,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 236 transitions, 2275 flow [2023-08-27 02:02:57,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 236 transitions, 2162 flow, removed 7 selfloop flow, removed 10 redundant places. [2023-08-27 02:02:57,797 INFO L231 Difference]: Finished difference. Result has 117 places, 128 transitions, 933 flow [2023-08-27 02:02:57,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=933, PETRI_PLACES=117, PETRI_TRANSITIONS=128} [2023-08-27 02:02:57,797 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 48 predicate places. [2023-08-27 02:02:57,797 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 128 transitions, 933 flow [2023-08-27 02:02:57,797 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 02:02:57,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:02:57,798 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:02:57,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 02:02:57,798 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:02:57,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:02:57,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1972554202, now seen corresponding path program 1 times [2023-08-27 02:02:57,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:02:57,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605854411] [2023-08-27 02:02:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:57,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:02:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:58,572 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 02:02:58,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:02:58,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605854411] [2023-08-27 02:02:58,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605854411] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:02:58,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674642633] [2023-08-27 02:02:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:02:58,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:02:58,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:02:58,577 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 02:02:58,603 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 02:02:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:02:58,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 02:02:58,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:02:58,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:58,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:58,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:58,816 INFO L322 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-27 02:02:58,816 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 02:02:58,884 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 02:02:58,933 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 02:02:58,933 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 02:02:58,973 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 02:02:58,999 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 02:02:59,018 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:02:59,019 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 02:02:59,062 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 02:02:59,075 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 02:02:59,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:59,107 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 02:02:59,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:59,142 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 02:02:59,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:02:59,201 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 02:02:59,219 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 02:02:59,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:02:59,294 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (* |c_thread2Thread1of1ForFork1_~i~1#1| 4))) (let ((.cse2 (+ c_~A~0.offset .cse3))) (and (forall ((v_ArrVal_1114 (Array Int Int)) (~B~0.offset Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1114))) (let ((.cse0 (select (select .cse1 c_~B~0.base) (+ ~B~0.offset .cse3)))) (or (< 4294967295 .cse0) (<= 0 (+ (select (select .cse1 c_~A~0.base) .cse2) .cse0 2147483648)) (<= .cse0 0))))) (forall ((v_ArrVal_1114 (Array Int Int)) (~B~0.offset Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1114))) (let ((.cse4 (select (select .cse5 c_~B~0.base) (+ ~B~0.offset .cse3)))) (or (< 0 .cse4) (<= 0 (+ (select (select .cse5 c_~A~0.base) .cse2) .cse4 2147483648)) (< .cse4 0)))))))) is different from false [2023-08-27 02:02:59,315 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_1114 (Array Int Int)) (~B~0.offset Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1114))) (let ((.cse0 (select (select .cse1 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ .cse0 (select (select .cse1 c_~A~0.base) .cse2) 2147483648)) (< 0 .cse0) (< .cse0 0))))) (forall ((v_ArrVal_1114 (Array Int Int)) (~B~0.offset Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1114))) (let ((.cse3 (select (select .cse4 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ .cse3 (select (select .cse4 c_~A~0.base) .cse2) 2147483648)) (<= .cse3 0) (< 4294967295 .cse3))))))) is different from false [2023-08-27 02:02:59,347 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_1114 (Array Int Int)) (v_ArrVal_1113 (Array Int Int)) (~B~0.offset Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1113) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1114))) (let ((.cse0 (select (select .cse1 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< 4294967295 .cse0) (<= .cse0 0) (<= 0 (+ (select (select .cse1 c_~A~0.base) .cse2) .cse0 2147483648)))))) (forall ((v_ArrVal_1114 (Array Int Int)) (v_ArrVal_1113 (Array Int Int)) (~B~0.offset Int)) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1113) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1114))) (let ((.cse3 (select (select .cse4 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< .cse3 0) (<= 0 (+ (select (select .cse4 c_~A~0.base) .cse2) .cse3 2147483648)) (< 0 .cse3))))))) is different from false [2023-08-27 02:02:59,458 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_1114 (Array Int Int)) (v_ArrVal_1113 (Array Int Int)) (v_ArrVal_1112 (Array Int Int)) (v_ArrVal_1111 (Array Int Int)) (~B~0.offset Int)) (let ((.cse1 (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1111) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1112) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1113) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1114))) (let ((.cse0 (select (select .cse1 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< 4294967295 .cse0) (<= .cse0 0) (<= 0 (+ .cse0 (select (select .cse1 c_~A~0.base) .cse2) 2147483648)))))) (forall ((v_ArrVal_1114 (Array Int Int)) (v_ArrVal_1113 (Array Int Int)) (v_ArrVal_1112 (Array Int Int)) (v_ArrVal_1111 (Array Int Int)) (~B~0.offset Int)) (let ((.cse4 (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1111) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1112) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1113) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1114))) (let ((.cse3 (select (select .cse4 c_~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 02:03:08,016 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:03:08,016 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 02:03:08,204 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:03:08,211 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 13421549 treesize of output 13317101 [2023-08-27 02:03:10,010 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:03:10,011 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 25503 treesize of output 23400 [2023-08-27 02:03:10,298 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:03:10,299 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 23391 treesize of output 23136 [2023-08-27 02:03:10,624 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:03:10,625 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 23127 treesize of output 22608 [2023-08-27 02:03:10,903 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:03:10,904 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 22599 treesize of output 22408 [2023-08-27 02:03:11,197 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:03:11,199 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 22399 treesize of output 21352 [2023-08-27 02:03:11,493 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:03:11,495 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 21343 treesize of output 21152 [2023-08-27 02:03:11,801 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:03:11,802 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 21143 treesize of output 20096 [2023-08-27 02:03:12,086 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-27 02:03:12,119 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:03:12,120 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 20087 treesize of output 19832 [2023-08-27 02:03:12,415 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:03:12,416 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 19823 treesize of output 19304 [2023-08-27 02:03:12,714 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:03:12,715 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 19295 treesize of output 17192 [2023-08-27 02:05:52,678 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 02:05:52,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674642633] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:05:52,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:05:52,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 32 [2023-08-27 02:05:52,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805707229] [2023-08-27 02:05:52,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:05:52,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-27 02:05:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:05:52,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-27 02:05:52,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=743, Unknown=9, NotChecked=236, Total=1122 [2023-08-27 02:05:52,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 780 [2023-08-27 02:05:52,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 128 transitions, 933 flow. Second operand has 34 states, 34 states have (on average 262.38235294117646) internal successors, (8921), 34 states have internal predecessors, (8921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:52,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:05:52,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 780 [2023-08-27 02:05:52,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:05:55,623 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 02:05:57,134 INFO L124 PetriNetUnfolderBase]: 13053/18262 cut-off events. [2023-08-27 02:05:57,134 INFO L125 PetriNetUnfolderBase]: For 22851/23624 co-relation queries the response was YES. [2023-08-27 02:05:57,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55118 conditions, 18262 events. 13053/18262 cut-off events. For 22851/23624 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 104277 event pairs, 5288 based on Foata normal form. 957/13917 useless extension candidates. Maximal degree in co-relation 55095. Up to 11999 conditions per place. [2023-08-27 02:05:57,225 INFO L140 encePairwiseOnDemand]: 770/780 looper letters, 164 selfloop transitions, 35 changer transitions 0/203 dead transitions. [2023-08-27 02:05:57,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 203 transitions, 1627 flow [2023-08-27 02:05:57,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:05:57,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:05:57,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2470 transitions. [2023-08-27 02:05:57,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2023-08-27 02:05:57,228 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2470 transitions. [2023-08-27 02:05:57,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2470 transitions. [2023-08-27 02:05:57,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:05:57,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2470 transitions. [2023-08-27 02:05:57,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 274.44444444444446) internal successors, (2470), 9 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:57,236 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 02:05:57,236 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 02:05:57,236 INFO L175 Difference]: Start difference. First operand has 117 places, 128 transitions, 933 flow. Second operand 9 states and 2470 transitions. [2023-08-27 02:05:57,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 203 transitions, 1627 flow [2023-08-27 02:05:57,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 203 transitions, 1616 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:05:57,285 INFO L231 Difference]: Finished difference. Result has 126 places, 131 transitions, 1083 flow [2023-08-27 02:05:57,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1083, PETRI_PLACES=126, PETRI_TRANSITIONS=131} [2023-08-27 02:05:57,285 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 57 predicate places. [2023-08-27 02:05:57,286 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 131 transitions, 1083 flow [2023-08-27 02:05:57,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 262.38235294117646) internal successors, (8921), 34 states have internal predecessors, (8921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:57,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:05:57,287 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:05:57,291 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 02:05:57,487 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 02:05:57,487 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:05:57,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:05:57,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1972553673, now seen corresponding path program 1 times [2023-08-27 02:05:57,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:05:57,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796176774] [2023-08-27 02:05:57,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:05:57,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:05:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:05:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-27 02:05:57,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:05:57,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796176774] [2023-08-27 02:05:57,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796176774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:05:57,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:05:57,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:05:57,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606019748] [2023-08-27 02:05:57,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:05:57,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:05:57,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:05:57,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:05:57,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:05:57,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 780 [2023-08-27 02:05:57,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 131 transitions, 1083 flow. Second operand has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:57,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:05:57,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 780 [2023-08-27 02:05:57,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:05:58,774 INFO L124 PetriNetUnfolderBase]: 11768/16265 cut-off events. [2023-08-27 02:05:58,774 INFO L125 PetriNetUnfolderBase]: For 26214/27129 co-relation queries the response was YES. [2023-08-27 02:05:58,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51825 conditions, 16265 events. 11768/16265 cut-off events. For 26214/27129 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 88166 event pairs, 2999 based on Foata normal form. 934/12417 useless extension candidates. Maximal degree in co-relation 51799. Up to 12993 conditions per place. [2023-08-27 02:05:58,858 INFO L140 encePairwiseOnDemand]: 777/780 looper letters, 130 selfloop transitions, 19 changer transitions 0/153 dead transitions. [2023-08-27 02:05:58,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 153 transitions, 1453 flow [2023-08-27 02:05:58,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:05:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:05:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1045 transitions. [2023-08-27 02:05:58,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4465811965811966 [2023-08-27 02:05:58,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1045 transitions. [2023-08-27 02:05:58,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1045 transitions. [2023-08-27 02:05:58,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:05:58,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1045 transitions. [2023-08-27 02:05:58,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 348.3333333333333) internal successors, (1045), 3 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:58,862 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 02:05:58,862 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 02:05:58,862 INFO L175 Difference]: Start difference. First operand has 126 places, 131 transitions, 1083 flow. Second operand 3 states and 1045 transitions. [2023-08-27 02:05:58,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 153 transitions, 1453 flow [2023-08-27 02:05:58,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 153 transitions, 1416 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 02:05:58,887 INFO L231 Difference]: Finished difference. Result has 121 places, 127 transitions, 1048 flow [2023-08-27 02:05:58,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1048, PETRI_PLACES=121, PETRI_TRANSITIONS=127} [2023-08-27 02:05:58,887 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 52 predicate places. [2023-08-27 02:05:58,887 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 127 transitions, 1048 flow [2023-08-27 02:05:58,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:58,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:05:58,888 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:05:58,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 02:05:58,888 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:05:58,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:05:58,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1972553678, now seen corresponding path program 1 times [2023-08-27 02:05:58,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:05:58,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719991880] [2023-08-27 02:05:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:05:58,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:05:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:05:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 02:05:59,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:05:59,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719991880] [2023-08-27 02:05:59,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719991880] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:05:59,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903566414] [2023-08-27 02:05:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:05:59,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:05:59,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:05:59,025 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 02:05:59,032 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 02:05:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:05:59,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 02:05:59,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:05:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 02:05:59,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:05:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 02:05:59,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903566414] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:05:59,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:05:59,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-27 02:05:59,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379045280] [2023-08-27 02:05:59,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:05:59,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 02:05:59,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:05:59,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 02:05:59,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-08-27 02:05:59,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 780 [2023-08-27 02:05:59,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 127 transitions, 1048 flow. Second operand has 17 states, 17 states have (on average 282.5882352941176) internal successors, (4804), 17 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:05:59,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:05:59,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 780 [2023-08-27 02:05:59,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:06:01,449 INFO L124 PetriNetUnfolderBase]: 17098/23621 cut-off events. [2023-08-27 02:06:01,449 INFO L125 PetriNetUnfolderBase]: For 56338/57294 co-relation queries the response was YES. [2023-08-27 02:06:01,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76030 conditions, 23621 events. 17098/23621 cut-off events. For 56338/57294 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 131941 event pairs, 8482 based on Foata normal form. 2147/19620 useless extension candidates. Maximal degree in co-relation 76005. Up to 14525 conditions per place. [2023-08-27 02:06:01,572 INFO L140 encePairwiseOnDemand]: 766/780 looper letters, 169 selfloop transitions, 59 changer transitions 0/232 dead transitions. [2023-08-27 02:06:01,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 232 transitions, 1987 flow [2023-08-27 02:06:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 02:06:01,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 02:06:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3240 transitions. [2023-08-27 02:06:01,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776223776223776 [2023-08-27 02:06:01,575 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3240 transitions. [2023-08-27 02:06:01,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3240 transitions. [2023-08-27 02:06:01,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:06:01,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3240 transitions. [2023-08-27 02:06:01,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 294.54545454545456) internal successors, (3240), 11 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:01,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 780.0) internal successors, (9360), 12 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:01,585 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 780.0) internal successors, (9360), 12 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:01,585 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 1048 flow. Second operand 11 states and 3240 transitions. [2023-08-27 02:06:01,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 232 transitions, 1987 flow [2023-08-27 02:06:01,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 232 transitions, 1922 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 02:06:01,847 INFO L231 Difference]: Finished difference. Result has 131 places, 141 transitions, 1340 flow [2023-08-27 02:06:01,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1340, PETRI_PLACES=131, PETRI_TRANSITIONS=141} [2023-08-27 02:06:01,848 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 62 predicate places. [2023-08-27 02:06:01,848 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 141 transitions, 1340 flow [2023-08-27 02:06:01,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 282.5882352941176) internal successors, (4804), 17 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:01,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:06:01,848 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:06:01,855 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 02:06:02,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:06:02,049 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:06:02,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:06:02,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1972554205, now seen corresponding path program 1 times [2023-08-27 02:06:02,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:06:02,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367393909] [2023-08-27 02:06:02,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:06:02,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:06:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:06:02,843 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 02:06:02,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:06:02,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367393909] [2023-08-27 02:06:02,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367393909] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:06:02,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903035335] [2023-08-27 02:06:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:06:02,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:06:02,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:06:02,846 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 02:06:02,883 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 02:06:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:06:03,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 02:06:03,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:06:03,161 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 02:06:03,253 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 02:06:03,323 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:06:03,324 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 02:06:03,362 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 02:06:03,380 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 02:06:03,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:06:03,422 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 02:06:03,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:06:03,476 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 02:06:03,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:06:03,561 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 02:06:03,565 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 02:06:03,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:06:03,597 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1304 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1304) c_~B~0.base) (+ (* |c_thread2Thread1of1ForFork1_~i~1#1| 4) c_~B~0.offset)) 9223372039002259456))) is different from false [2023-08-27 02:06:03,603 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1304 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1304) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-08-27 02:06:08,016 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:08,016 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 02:06:08,027 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:08,027 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 02:06:08,043 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 274 [2023-08-27 02:06:08,052 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 135 treesize of output 131 [2023-08-27 02:06:08,058 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 270 treesize of output 238 [2023-08-27 02:06:08,067 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 114 [2023-08-27 02:06:08,373 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:08,374 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 62 [2023-08-27 02:06:08,488 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 02:06:08,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903035335] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:06:08,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:06:08,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 32 [2023-08-27 02:06:08,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453141759] [2023-08-27 02:06:08,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:06:08,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-27 02:06:08,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:06:08,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-27 02:06:08,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=854, Unknown=18, NotChecked=122, Total=1122 [2023-08-27 02:06:08,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 780 [2023-08-27 02:06:08,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 141 transitions, 1340 flow. Second operand has 34 states, 34 states have (on average 244.35294117647058) internal successors, (8308), 34 states have internal predecessors, (8308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:08,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:06:08,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 780 [2023-08-27 02:06:08,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:06:12,337 INFO L124 PetriNetUnfolderBase]: 15751/21805 cut-off events. [2023-08-27 02:06:12,337 INFO L125 PetriNetUnfolderBase]: For 52088/53273 co-relation queries the response was YES. [2023-08-27 02:06:12,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75240 conditions, 21805 events. 15751/21805 cut-off events. For 52088/53273 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 122285 event pairs, 3802 based on Foata normal form. 1419/17036 useless extension candidates. Maximal degree in co-relation 75209. Up to 8451 conditions per place. [2023-08-27 02:06:12,451 INFO L140 encePairwiseOnDemand]: 766/780 looper letters, 177 selfloop transitions, 64 changer transitions 0/245 dead transitions. [2023-08-27 02:06:12,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 245 transitions, 2180 flow [2023-08-27 02:06:12,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 02:06:12,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 02:06:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4299 transitions. [2023-08-27 02:06:12,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242081447963801 [2023-08-27 02:06:12,456 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4299 transitions. [2023-08-27 02:06:12,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4299 transitions. [2023-08-27 02:06:12,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:06:12,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4299 transitions. [2023-08-27 02:06:12,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 252.88235294117646) internal successors, (4299), 17 states have internal predecessors, (4299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:12,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 780.0) internal successors, (14040), 18 states have internal predecessors, (14040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:12,471 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 780.0) internal successors, (14040), 18 states have internal predecessors, (14040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:12,471 INFO L175 Difference]: Start difference. First operand has 131 places, 141 transitions, 1340 flow. Second operand 17 states and 4299 transitions. [2023-08-27 02:06:12,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 245 transitions, 2180 flow [2023-08-27 02:06:12,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 245 transitions, 2176 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-27 02:06:12,579 INFO L231 Difference]: Finished difference. Result has 151 places, 144 transitions, 1568 flow [2023-08-27 02:06:12,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1568, PETRI_PLACES=151, PETRI_TRANSITIONS=144} [2023-08-27 02:06:12,579 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 82 predicate places. [2023-08-27 02:06:12,579 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 144 transitions, 1568 flow [2023-08-27 02:06:12,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 244.35294117647058) internal successors, (8308), 34 states have internal predecessors, (8308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:12,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:06:12,581 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:06:12,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-27 02:06:12,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:06:12,781 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:06:12,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:06:12,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1972211034, now seen corresponding path program 1 times [2023-08-27 02:06:12,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:06:12,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282504119] [2023-08-27 02:06:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:06:12,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:06:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:06:13,570 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 02:06:13,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:06:13,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282504119] [2023-08-27 02:06:13,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282504119] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:06:13,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296850271] [2023-08-27 02:06:13,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:06:13,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:06:13,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:06:13,573 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 02:06:13,584 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 02:06:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:06:13,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 02:06:13,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:06:13,892 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 02:06:13,987 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 02:06:14,054 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:06:14,055 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 02:06:14,094 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 02:06:14,112 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 02:06:14,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:06:14,147 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 02:06:14,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:06:14,184 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 02:06:14,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:06:14,219 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 02:06:14,226 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 02:06:14,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:06:16,545 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:16,546 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 02:06:16,559 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:16,559 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 8769 treesize of output 8577 [2023-08-27 02:06:16,647 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 127 treesize of output 119 [2023-08-27 02:06:16,654 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 119 treesize of output 115 [2023-08-27 02:06:16,660 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 246 treesize of output 214 [2023-08-27 02:06:16,667 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 114 treesize of output 98 [2023-08-27 02:06:16,888 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:16,888 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 62 [2023-08-27 02:06:16,988 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 02:06:16,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296850271] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:06:16,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:06:16,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 31 [2023-08-27 02:06:16,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286178322] [2023-08-27 02:06:16,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:06:16,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 02:06:16,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:06:16,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 02:06:16,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=884, Unknown=26, NotChecked=0, Total=1056 [2023-08-27 02:06:16,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 780 [2023-08-27 02:06:16,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 144 transitions, 1568 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 02:06:16,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:06:16,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 780 [2023-08-27 02:06:16,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:06:20,420 INFO L124 PetriNetUnfolderBase]: 14142/19704 cut-off events. [2023-08-27 02:06:20,421 INFO L125 PetriNetUnfolderBase]: For 82106/83228 co-relation queries the response was YES. [2023-08-27 02:06:20,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73347 conditions, 19704 events. 14142/19704 cut-off events. For 82106/83228 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 107921 event pairs, 4218 based on Foata normal form. 1368/15443 useless extension candidates. Maximal degree in co-relation 73310. Up to 8427 conditions per place. [2023-08-27 02:06:20,527 INFO L140 encePairwiseOnDemand]: 766/780 looper letters, 176 selfloop transitions, 64 changer transitions 0/244 dead transitions. [2023-08-27 02:06:20,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 244 transitions, 2354 flow [2023-08-27 02:06:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 02:06:20,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 02:06:20,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4298 transitions. [2023-08-27 02:06:20,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32413273001508297 [2023-08-27 02:06:20,530 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4298 transitions. [2023-08-27 02:06:20,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4298 transitions. [2023-08-27 02:06:20,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:06:20,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4298 transitions. [2023-08-27 02:06:20,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 252.8235294117647) internal successors, (4298), 17 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:20,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 780.0) internal successors, (14040), 18 states have internal predecessors, (14040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:20,544 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 780.0) internal successors, (14040), 18 states have internal predecessors, (14040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:20,544 INFO L175 Difference]: Start difference. First operand has 151 places, 144 transitions, 1568 flow. Second operand 17 states and 4298 transitions. [2023-08-27 02:06:20,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 244 transitions, 2354 flow [2023-08-27 02:06:20,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 244 transitions, 2241 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-08-27 02:06:20,816 INFO L231 Difference]: Finished difference. Result has 155 places, 143 transitions, 1573 flow [2023-08-27 02:06:20,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1573, PETRI_PLACES=155, PETRI_TRANSITIONS=143} [2023-08-27 02:06:20,817 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 86 predicate places. [2023-08-27 02:06:20,817 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 143 transitions, 1573 flow [2023-08-27 02:06:20,818 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 02:06:20,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:06:20,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:06:20,823 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 02:06:21,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:06:21,018 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:06:21,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:06:21,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1972554201, now seen corresponding path program 1 times [2023-08-27 02:06:21,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:06:21,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417469220] [2023-08-27 02:06:21,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:06:21,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:06:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:06:21,760 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 02:06:21,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:06:21,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417469220] [2023-08-27 02:06:21,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417469220] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:06:21,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013556038] [2023-08-27 02:06:21,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:06:21,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:06:21,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:06:21,769 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:06:21,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 02:06:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:06:21,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 02:06:22,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:06:22,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:06:22,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:06:22,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:06:22,041 INFO L322 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-27 02:06:22,041 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 02:06:22,109 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 02:06:22,157 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 02:06:22,157 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 02:06:22,203 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 02:06:22,213 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 02:06:22,252 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:06:22,252 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 02:06:22,293 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 02:06:22,305 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 02:06:22,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:06:22,339 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 02:06:22,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:06:22,386 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 14 treesize of output 16 [2023-08-27 02:06:22,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:06:22,460 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 02:06:22,463 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 02:06:22,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:06:22,489 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1470 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1470) c_~A~0.base) (+ c_~A~0.offset (* |c_thread2Thread1of1ForFork1_~i~1#1| 4))) 2147483648)) is different from false [2023-08-27 02:06:22,929 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:22,930 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 02:06:22,940 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:22,940 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 1093 treesize of output 1081 [2023-08-27 02:06:22,968 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 530 treesize of output 522 [2023-08-27 02:06:22,984 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 262 treesize of output 258 [2023-08-27 02:06:22,996 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 518 treesize of output 486 [2023-08-27 02:06:23,008 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 486 treesize of output 470 [2023-08-27 02:06:23,019 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 470 treesize of output 406 [2023-08-27 02:06:23,556 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-27 02:06:23,772 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 02:06:23,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013556038] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:06:23,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:06:23,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 32 [2023-08-27 02:06:23,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873322199] [2023-08-27 02:06:23,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:06:23,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-27 02:06:23,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:06:23,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-27 02:06:23,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=871, Unknown=16, NotChecked=62, Total=1122 [2023-08-27 02:06:23,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 780 [2023-08-27 02:06:23,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 143 transitions, 1573 flow. Second operand has 34 states, 34 states have (on average 264.38235294117646) internal successors, (8989), 34 states have internal predecessors, (8989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:23,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:06:23,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 780 [2023-08-27 02:06:23,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:06:26,155 INFO L124 PetriNetUnfolderBase]: 12749/17843 cut-off events. [2023-08-27 02:06:26,155 INFO L125 PetriNetUnfolderBase]: For 65264/66269 co-relation queries the response was YES. [2023-08-27 02:06:26,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67337 conditions, 17843 events. 12749/17843 cut-off events. For 65264/66269 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 97982 event pairs, 5196 based on Foata normal form. 1346/14041 useless extension candidates. Maximal degree in co-relation 67302. Up to 12784 conditions per place. [2023-08-27 02:06:26,378 INFO L140 encePairwiseOnDemand]: 772/780 looper letters, 172 selfloop transitions, 36 changer transitions 0/212 dead transitions. [2023-08-27 02:06:26,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 212 transitions, 2234 flow [2023-08-27 02:06:26,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:06:26,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:06:26,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2221 transitions. [2023-08-27 02:06:26,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3559294871794872 [2023-08-27 02:06:26,380 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2221 transitions. [2023-08-27 02:06:26,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2221 transitions. [2023-08-27 02:06:26,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:06:26,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2221 transitions. [2023-08-27 02:06:26,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 277.625) internal successors, (2221), 8 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:26,386 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 02:06:26,386 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 02:06:26,386 INFO L175 Difference]: Start difference. First operand has 155 places, 143 transitions, 1573 flow. Second operand 8 states and 2221 transitions. [2023-08-27 02:06:26,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 212 transitions, 2234 flow [2023-08-27 02:06:26,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 212 transitions, 2106 flow, removed 7 selfloop flow, removed 14 redundant places. [2023-08-27 02:06:26,830 INFO L231 Difference]: Finished difference. Result has 148 places, 142 transitions, 1508 flow [2023-08-27 02:06:26,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1508, PETRI_PLACES=148, PETRI_TRANSITIONS=142} [2023-08-27 02:06:26,831 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 79 predicate places. [2023-08-27 02:06:26,831 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 142 transitions, 1508 flow [2023-08-27 02:06:26,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 264.38235294117646) internal successors, (8989), 34 states have internal predecessors, (8989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:26,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:06:26,832 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:06:26,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 02:06:27,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 02:06:27,038 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:06:27,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:06:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2071069043, now seen corresponding path program 1 times [2023-08-27 02:06:27,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:06:27,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167343368] [2023-08-27 02:06:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:06:27,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:06:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:06:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 02:06:27,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:06:27,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167343368] [2023-08-27 02:06:27,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167343368] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:06:27,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813000530] [2023-08-27 02:06:27,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:06:27,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:06:27,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:06:27,092 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:06:27,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 02:06:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:06:27,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 02:06:27,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:06:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 02:06:27,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:06:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 02:06:27,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813000530] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:06:27,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:06:27,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2023-08-27 02:06:27,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157392953] [2023-08-27 02:06:27,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:06:27,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 02:06:27,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:06:27,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 02:06:27,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-27 02:06:27,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 780 [2023-08-27 02:06:27,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 142 transitions, 1508 flow. Second operand has 11 states, 11 states have (on average 284.54545454545456) internal successors, (3130), 11 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:27,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:06:27,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 780 [2023-08-27 02:06:27,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:06:29,683 INFO L124 PetriNetUnfolderBase]: 15159/20843 cut-off events. [2023-08-27 02:06:29,683 INFO L125 PetriNetUnfolderBase]: For 100561/107901 co-relation queries the response was YES. [2023-08-27 02:06:29,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80322 conditions, 20843 events. 15159/20843 cut-off events. For 100561/107901 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 115645 event pairs, 2818 based on Foata normal form. 4468/20044 useless extension candidates. Maximal degree in co-relation 80288. Up to 7507 conditions per place. [2023-08-27 02:06:29,808 INFO L140 encePairwiseOnDemand]: 766/780 looper letters, 259 selfloop transitions, 38 changer transitions 0/312 dead transitions. [2023-08-27 02:06:29,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 312 transitions, 3211 flow [2023-08-27 02:06:29,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 02:06:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 02:06:29,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3562 transitions. [2023-08-27 02:06:29,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38055555555555554 [2023-08-27 02:06:29,811 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3562 transitions. [2023-08-27 02:06:29,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3562 transitions. [2023-08-27 02:06:29,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:06:29,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3562 transitions. [2023-08-27 02:06:29,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 296.8333333333333) internal successors, (3562), 12 states have internal predecessors, (3562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:29,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 780.0) internal successors, (10140), 13 states have internal predecessors, (10140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:29,822 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 780.0) internal successors, (10140), 13 states have internal predecessors, (10140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:29,822 INFO L175 Difference]: Start difference. First operand has 148 places, 142 transitions, 1508 flow. Second operand 12 states and 3562 transitions. [2023-08-27 02:06:29,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 312 transitions, 3211 flow [2023-08-27 02:06:29,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 312 transitions, 3151 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 02:06:29,910 INFO L231 Difference]: Finished difference. Result has 157 places, 148 transitions, 1601 flow [2023-08-27 02:06:29,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=780, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1601, PETRI_PLACES=157, PETRI_TRANSITIONS=148} [2023-08-27 02:06:29,911 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 88 predicate places. [2023-08-27 02:06:29,911 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 148 transitions, 1601 flow [2023-08-27 02:06:29,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 284.54545454545456) internal successors, (3130), 11 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:06:29,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:06:29,912 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:06:29,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 02:06:30,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 02:06:30,118 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2023-08-27 02:06:30,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:06:30,118 INFO L85 PathProgramCache]: Analyzing trace with hash 674504827, now seen corresponding path program 1 times [2023-08-27 02:06:30,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:06:30,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635196387] [2023-08-27 02:06:30,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:06:30,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:06:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:06:31,129 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 02:06:31,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:06:31,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635196387] [2023-08-27 02:06:31,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635196387] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:06:31,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168798321] [2023-08-27 02:06:31,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:06:31,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:06:31,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:06:31,131 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:06:31,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 02:06:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:06:31,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-27 02:06:31,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:06:31,413 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 02:06:31,514 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 02:06:31,564 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:06:31,565 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 02:06:31,603 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 02:06:31,615 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 02:06:31,630 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 02:06:31,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:06:31,642 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 02:06:31,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:06:31,686 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 02:06:31,948 INFO L322 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-27 02:06:31,948 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 172 treesize of output 175 [2023-08-27 02:06:32,019 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 20 [2023-08-27 02:06:32,031 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 20 [2023-08-27 02:06:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 02:06:32,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:06:33,168 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 8 c_~B~0.offset)) (.cse4 (+ 4 c_~B~0.offset))) (and (forall ((v_ArrVal_1622 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1622))) (let ((.cse0 (select (select .cse1 c_~B~0.base) .cse4))) (or (<= .cse0 0) (forall ((v_ArrVal_1623 (Array Int Int))) (< (select (select (store .cse1 c_~C~0.base v_ArrVal_1623) c_~B~0.base) .cse2) 4294967296)) (forall ((~A~0.offset Int) (~A~0.base Int)) (let ((.cse3 (select (select .cse1 ~A~0.base) (+ ~A~0.offset 4)))) (or (< 2147483647 (+ .cse3 .cse0)) (< (+ .cse3 .cse0 2147483648) 0)))) (< 4294967295 .cse0))))) (forall ((v_ArrVal_1622 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1622))) (let ((.cse6 (select (select .cse5 c_~B~0.base) .cse4))) (or (forall ((v_ArrVal_1623 (Array Int Int))) (< (select (select (store .cse5 c_~C~0.base v_ArrVal_1623) c_~B~0.base) .cse2) 4294967296)) (< (+ 9223372039002259455 .cse6) 0) (forall ((~A~0.offset Int) (~A~0.base Int)) (let ((.cse7 (select (select .cse5 ~A~0.base) (+ ~A~0.offset 4)))) (or (< 2147483647 (+ .cse7 .cse6)) (< (+ .cse7 .cse6 2147483648) 0)))) (< 0 .cse6))))))) is different from false [2023-08-27 02:06:33,256 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 8 c_~B~0.offset)) (.cse4 (+ 4 c_~B~0.offset))) (and (forall ((v_ArrVal_1622 (Array Int Int)) (v_ArrVal_1621 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1621) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1622))) (let ((.cse3 (select (select .cse0 c_~B~0.base) .cse4))) (or (forall ((v_ArrVal_1623 (Array Int Int))) (< (select (select (store .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1623) c_~B~0.base) .cse1) 4294967296)) (forall ((~A~0.offset Int) (~A~0.base Int)) (let ((.cse2 (select (select .cse0 ~A~0.base) (+ ~A~0.offset 4)))) (or (< 2147483647 (+ .cse2 .cse3)) (< (+ .cse2 2147483648 .cse3) 0)))) (< (+ 9223372039002259455 .cse3) 0) (< 0 .cse3))))) (forall ((v_ArrVal_1622 (Array Int Int)) (v_ArrVal_1621 (Array Int Int))) (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1621) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1622))) (let ((.cse7 (select (select .cse5 c_~B~0.base) .cse4))) (or (forall ((v_ArrVal_1623 (Array Int Int))) (< (select (select (store .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1623) c_~B~0.base) .cse1) 4294967296)) (forall ((~A~0.offset Int) (~A~0.base Int)) (let ((.cse6 (select (select .cse5 ~A~0.base) (+ ~A~0.offset 4)))) (or (< 2147483647 (+ .cse6 .cse7)) (< (+ .cse6 2147483648 .cse7) 0)))) (<= .cse7 0) (< 4294967295 .cse7))))))) is different from false [2023-08-27 02:06:33,316 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 8 c_~B~0.offset)) (.cse4 (+ 4 c_~B~0.offset))) (and (forall ((v_ArrVal_1622 (Array Int Int)) (v_ArrVal_1621 (Array Int Int)) (v_ArrVal_1620 (Array Int Int))) (let ((.cse2 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1620) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1621) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1622))) (let ((.cse0 (select (select .cse2 c_~B~0.base) .cse4))) (or (forall ((~A~0.offset Int) (~A~0.base Int)) (let ((.cse1 (select (select .cse2 ~A~0.base) (+ ~A~0.offset 4)))) (or (< (+ .cse0 .cse1 2147483648) 0) (< 2147483647 (+ .cse0 .cse1))))) (forall ((v_ArrVal_1623 (Array Int Int))) (< (select (select (store .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1623) c_~B~0.base) .cse3) 4294967296)) (< 4294967295 .cse0) (<= .cse0 0))))) (forall ((v_ArrVal_1622 (Array Int Int)) (v_ArrVal_1621 (Array Int Int)) (v_ArrVal_1620 (Array Int Int))) (let ((.cse7 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1620) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1621) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1622))) (let ((.cse5 (select (select .cse7 c_~B~0.base) .cse4))) (or (forall ((~A~0.offset Int) (~A~0.base Int)) (let ((.cse6 (select (select .cse7 ~A~0.base) (+ ~A~0.offset 4)))) (or (< (+ .cse5 .cse6 2147483648) 0) (< 2147483647 (+ .cse5 .cse6))))) (forall ((v_ArrVal_1623 (Array Int Int))) (< (select (select (store .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1623) c_~B~0.base) .cse3) 4294967296)) (< (+ 9223372039002259455 .cse5) 0) (< 0 .cse5))))))) is different from false [2023-08-27 02:06:33,624 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:33,625 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 441 treesize of output 286 [2023-08-27 02:06:33,856 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:33,859 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 142053 treesize of output 134018 [2023-08-27 02:06:34,452 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:34,453 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 6473 treesize of output 5940 [2023-08-27 02:06:34,568 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:34,568 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 5921 treesize of output 5794 [2023-08-27 02:06:34,695 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:34,695 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 5785 treesize of output 5528 [2023-08-27 02:06:34,800 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 5509 treesize of output 5493 [2023-08-27 02:06:34,971 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:34,971 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 5493 treesize of output 5366 [2023-08-27 02:06:35,104 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:35,104 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 5357 treesize of output 5100 [2023-08-27 02:06:35,240 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 02:06:35,241 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 5081 treesize of output 4548 [2023-08-27 02:06:35,344 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-27 02:06:35,356 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 4529 treesize of output 4513 Received shutdown request... [2023-08-27 02:12:57,439 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 02:12:57,439 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 02:12:57,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 50 remaining) [2023-08-27 02:12:57,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 02:12:57,477 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 02:12:57,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 02:12:57,643 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. [2023-08-27 02:12:57,644 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 50 remaining) [2023-08-27 02:12:57,644 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 50 remaining) [2023-08-27 02:12:57,644 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 50 remaining) [2023-08-27 02:12:57,644 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 50 remaining) [2023-08-27 02:12:57,644 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 50 remaining) [2023-08-27 02:12:57,644 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 50 remaining) [2023-08-27 02:12:57,644 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 50 remaining) [2023-08-27 02:12:57,644 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 50 remaining) [2023-08-27 02:12:57,644 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 50 remaining) [2023-08-27 02:12:57,644 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 50 remaining) [2023-08-27 02:12:57,644 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 50 remaining) [2023-08-27 02:12:57,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 50 remaining) [2023-08-27 02:12:57,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 50 remaining) [2023-08-27 02:12:57,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 50 remaining) [2023-08-27 02:12:57,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 50 remaining) [2023-08-27 02:12:57,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 50 remaining) [2023-08-27 02:12:57,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 50 remaining) [2023-08-27 02:12:57,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 50 remaining) [2023-08-27 02:12:57,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 50 remaining) [2023-08-27 02:12:57,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 50 remaining) [2023-08-27 02:12:57,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 50 remaining) [2023-08-27 02:12:57,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 50 remaining) [2023-08-27 02:12:57,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 50 remaining) [2023-08-27 02:12:57,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 50 remaining) [2023-08-27 02:12:57,645 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 50 remaining) [2023-08-27 02:12:57,646 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 50 remaining) [2023-08-27 02:12:57,646 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 50 remaining) [2023-08-27 02:12:57,646 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 50 remaining) [2023-08-27 02:12:57,646 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 50 remaining) [2023-08-27 02:12:57,646 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 50 remaining) [2023-08-27 02:12:57,646 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 50 remaining) [2023-08-27 02:12:57,646 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 50 remaining) [2023-08-27 02:12:57,646 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18ASSERT_VIOLATIONASSERT (16 of 50 remaining) [2023-08-27 02:12:57,646 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 50 remaining) [2023-08-27 02:12:57,646 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 50 remaining) [2023-08-27 02:12:57,646 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 50 remaining) [2023-08-27 02:12:57,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 50 remaining) [2023-08-27 02:12:57,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 50 remaining) [2023-08-27 02:12:57,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 50 remaining) [2023-08-27 02:12:57,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 50 remaining) [2023-08-27 02:12:57,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 50 remaining) [2023-08-27 02:12:57,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 50 remaining) [2023-08-27 02:12:57,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 50 remaining) [2023-08-27 02:12:57,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 50 remaining) [2023-08-27 02:12:57,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 50 remaining) [2023-08-27 02:12:57,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 50 remaining) [2023-08-27 02:12:57,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 50 remaining) [2023-08-27 02:12:57,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 50 remaining) [2023-08-27 02:12:57,647 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 50 remaining) [2023-08-27 02:12:57,648 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:12:57,652 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 02:12:57,653 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 02:12:57,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 02:12:57 BasicIcfg [2023-08-27 02:12:57,655 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 02:12:57,655 INFO L158 Benchmark]: Toolchain (without parser) took 807516.42ms. Allocated memory was 337.6MB in the beginning and 5.5GB in the end (delta: 5.1GB). Free memory was 313.5MB in the beginning and 4.0GB in the end (delta: -3.7GB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. [2023-08-27 02:12:57,655 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 337.6MB. Free memory was 315.0MB in the beginning and 314.9MB in the end (delta: 119.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:12:57,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.45ms. Allocated memory is still 337.6MB. Free memory was 313.5MB in the beginning and 301.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 02:12:57,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.84ms. Allocated memory is still 337.6MB. Free memory was 301.3MB in the beginning and 298.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:12:57,656 INFO L158 Benchmark]: Boogie Preprocessor took 63.39ms. Allocated memory is still 337.6MB. Free memory was 298.6MB in the beginning and 296.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:12:57,656 INFO L158 Benchmark]: RCFGBuilder took 965.39ms. Allocated memory is still 337.6MB. Free memory was 296.6MB in the beginning and 227.1MB in the end (delta: 69.5MB). Peak memory consumption was 69.2MB. Max. memory is 16.0GB. [2023-08-27 02:12:57,656 INFO L158 Benchmark]: TraceAbstraction took 806203.39ms. Allocated memory was 337.6MB in the beginning and 5.5GB in the end (delta: 5.1GB). Free memory was 225.9MB in the beginning and 4.0GB in the end (delta: -3.8GB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. [2023-08-27 02:12:57,657 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 337.6MB. Free memory was 315.0MB in the beginning and 314.9MB in the end (delta: 119.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 204.45ms. Allocated memory is still 337.6MB. Free memory was 313.5MB in the beginning and 301.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 74.84ms. Allocated memory is still 337.6MB. Free memory was 301.3MB in the beginning and 298.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 63.39ms. Allocated memory is still 337.6MB. Free memory was 298.6MB in the beginning and 296.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 965.39ms. Allocated memory is still 337.6MB. Free memory was 296.6MB in the beginning and 227.1MB in the end (delta: 69.5MB). Peak memory consumption was 69.2MB. Max. memory is 16.0GB. * TraceAbstraction took 806203.39ms. Allocated memory was 337.6MB in the beginning and 5.5GB in the end (delta: 5.1GB). Free memory was 225.9MB in the beginning and 4.0GB in the end (delta: -3.8GB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.5s, 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: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - 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 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - 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 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - 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 20 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 11ms.. - 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: 806.0s, OverallIterations: 29, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 84.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 18.7s, HoareTripleCheckerStatistics: 19 mSolverCounterUnknown, 2758 SdHoareTripleChecker+Valid, 48.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2758 mSDsluCounter, 258 SdHoareTripleChecker+Invalid, 47.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1657 IncrementalHoareTripleChecker+Unchecked, 229 mSDsCounter, 857 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15412 IncrementalHoareTripleChecker+Invalid, 17945 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 857 mSolverCounterUnsat, 29 mSDtfsCounter, 15412 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 720 GetRequests, 222 SyntacticMatches, 19 SemanticMatches, 479 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 3209 ImplicationChecksByTransitivity, 30.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1601occurred in iteration=28, InterpolantAutomatonStates: 223, 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: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 306.4s InterpolantComputationTime, 553 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 707 ConstructedInterpolants, 108 QuantifiedInterpolants, 13009 SizeOfPredicates, 97 NumberOfNonLiveVariables, 5246 ConjunctsInSsa, 467 ConjunctsInUnsatCore, 67 InterpolantComputations, 10 PerfectInterpolantSequences, 186/428 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