/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-more-array-sum-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 01:06:27,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 01:06:27,683 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 01:06:27,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 01:06:27,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 01:06:27,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 01:06:27,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 01:06:27,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 01:06:27,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 01:06:27,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 01:06:27,708 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 01:06:27,708 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 01:06:27,708 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 01:06:27,709 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 01:06:27,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 01:06:27,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 01:06:27,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 01:06:27,710 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 01:06:27,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 01:06:27,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 01:06:27,710 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 01:06:27,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 01:06:27,711 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 01:06:27,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 01:06:27,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 01:06:27,712 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 01:06:27,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 01:06:27,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:06:27,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 01:06:27,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 01:06:27,713 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 01:06:27,713 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 01:06:27,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 01:06:27,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 01:06:27,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 01:06:27,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 01:06:27,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 01:06:27,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 01:06:27,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 01:06:27,977 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 01:06:27,978 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 01:06:27,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-08-27 01:06:28,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 01:06:29,118 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 01:06:29,118 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-08-27 01:06:29,125 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f40ac7f75/84ab2a8c96794f78a9050897f9f6181f/FLAGb0448f2b9 [2023-08-27 01:06:29,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f40ac7f75/84ab2a8c96794f78a9050897f9f6181f [2023-08-27 01:06:29,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 01:06:29,141 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 01:06:29,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 01:06:29,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 01:06:29,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 01:06:29,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:06:29" (1/1) ... [2023-08-27 01:06:29,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa61a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:06:29, skipping insertion in model container [2023-08-27 01:06:29,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:06:29" (1/1) ... [2023-08-27 01:06:29,158 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 01:06:29,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:06:29,322 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 01:06:29,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:06:29,365 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:06:29,365 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:06:29,370 INFO L206 MainTranslator]: Completed translation [2023-08-27 01:06:29,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:06:29 WrapperNode [2023-08-27 01:06:29,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 01:06:29,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 01:06:29,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 01:06:29,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 01:06:29,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:06:29" (1/1) ... [2023-08-27 01:06:29,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:06:29" (1/1) ... [2023-08-27 01:06:29,429 INFO L138 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 259 [2023-08-27 01:06:29,429 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 01:06:29,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 01:06:29,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 01:06:29,430 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 01:06:29,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:06:29" (1/1) ... [2023-08-27 01:06:29,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:06:29" (1/1) ... [2023-08-27 01:06:29,448 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:06:29" (1/1) ... [2023-08-27 01:06:29,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:06:29" (1/1) ... [2023-08-27 01:06:29,453 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:06:29" (1/1) ... [2023-08-27 01:06:29,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:06:29" (1/1) ... [2023-08-27 01:06:29,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:06:29" (1/1) ... [2023-08-27 01:06:29,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:06:29" (1/1) ... [2023-08-27 01:06:29,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 01:06:29,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 01:06:29,460 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 01:06:29,460 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 01:06:29,461 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:06:29" (1/1) ... [2023-08-27 01:06:29,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:06:29,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:06:29,492 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 01:06:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 01:06:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 01:06:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 01:06:29,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 01:06:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 01:06:29,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 01:06:29,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 01:06:29,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 01:06:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 01:06:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 01:06:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 01:06:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 01:06:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 01:06:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 01:06:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 01:06:29,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 01:06:29,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 01:06:29,542 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 01:06:29,532 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 01:06:29,638 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 01:06:29,639 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 01:06:30,021 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 01:06:30,288 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 01:06:30,288 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 01:06:30,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:06:30 BoogieIcfgContainer [2023-08-27 01:06:30,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 01:06:30,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 01:06:30,292 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 01:06:30,294 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 01:06:30,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:06:29" (1/3) ... [2023-08-27 01:06:30,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a68ac7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:06:30, skipping insertion in model container [2023-08-27 01:06:30,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:06:29" (2/3) ... [2023-08-27 01:06:30,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a68ac7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:06:30, skipping insertion in model container [2023-08-27 01:06:30,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:06:30" (3/3) ... [2023-08-27 01:06:30,296 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2023-08-27 01:06:30,307 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 01:06:30,307 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2023-08-27 01:06:30,307 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 01:06:30,414 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 01:06:30,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 186 transitions, 396 flow [2023-08-27 01:06:30,499 INFO L124 PetriNetUnfolderBase]: 12/183 cut-off events. [2023-08-27 01:06:30,499 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 01:06:30,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 12/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 275 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2023-08-27 01:06:30,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 186 transitions, 396 flow [2023-08-27 01:06:30,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 172 transitions, 362 flow [2023-08-27 01:06:30,511 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 01:06:30,517 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 172 transitions, 362 flow [2023-08-27 01:06:30,523 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 172 transitions, 362 flow [2023-08-27 01:06:30,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 172 transitions, 362 flow [2023-08-27 01:06:30,555 INFO L124 PetriNetUnfolderBase]: 12/172 cut-off events. [2023-08-27 01:06:30,555 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 01:06:30,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 12/172 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 278 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2023-08-27 01:06:30,561 INFO L119 LiptonReduction]: Number of co-enabled transitions 4488 [2023-08-27 01:06:41,100 INFO L134 LiptonReduction]: Checked pairs total: 7820 [2023-08-27 01:06:41,101 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-08-27 01:06:41,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 01:06:41,113 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;@457a905b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 01:06:41,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2023-08-27 01:06:41,115 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 01:06:41,115 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 01:06:41,115 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 01:06:41,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:41,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 01:06:41,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:06:41,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:41,118 INFO L85 PathProgramCache]: Analyzing trace with hash 33394, now seen corresponding path program 1 times [2023-08-27 01:06:41,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:41,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855555773] [2023-08-27 01:06:41,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:41,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:41,301 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 01:06:41,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:41,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855555773] [2023-08-27 01:06:41,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855555773] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:06:41,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:06:41,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:06:41,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251148217] [2023-08-27 01:06:41,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:06:41,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:06:41,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:06:41,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:06:41,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 357 [2023-08-27 01:06:41,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:41,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:41,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 357 [2023-08-27 01:06:41,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:42,359 INFO L124 PetriNetUnfolderBase]: 8306/10531 cut-off events. [2023-08-27 01:06:42,360 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2023-08-27 01:06:42,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21305 conditions, 10531 events. 8306/10531 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 50989 event pairs, 4439 based on Foata normal form. 0/2831 useless extension candidates. Maximal degree in co-relation 19467. Up to 10458 conditions per place. [2023-08-27 01:06:42,419 INFO L140 encePairwiseOnDemand]: 346/357 looper letters, 42 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-27 01:06:42,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 204 flow [2023-08-27 01:06:42,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:06:42,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:06:42,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-08-27 01:06:42,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44724556489262374 [2023-08-27 01:06:42,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-08-27 01:06:42,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-08-27 01:06:42,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:42,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-08-27 01:06:42,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:42,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:42,446 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:42,447 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 122 flow. Second operand 3 states and 479 transitions. [2023-08-27 01:06:42,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 204 flow [2023-08-27 01:06:42,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 192 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 01:06:42,471 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 119 flow [2023-08-27 01:06:42,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-08-27 01:06:42,475 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -9 predicate places. [2023-08-27 01:06:42,475 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 119 flow [2023-08-27 01:06:42,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:42,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:42,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:06:42,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 01:06:42,476 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:06:42,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1036243, now seen corresponding path program 1 times [2023-08-27 01:06:42,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:42,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778063160] [2023-08-27 01:06:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:42,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:42,559 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 01:06:42,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:42,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778063160] [2023-08-27 01:06:42,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778063160] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:06:42,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937212628] [2023-08-27 01:06:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:42,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:06:42,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:06:42,570 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 01:06:42,603 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 01:06:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:42,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:06:42,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:06:42,734 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 01:06:42,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:06:42,745 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 01:06:42,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937212628] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:06:42,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:06:42,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:06:42,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866746069] [2023-08-27 01:06:42,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:06:42,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:06:42,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:42,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:06:42,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:06:42,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 357 [2023-08-27 01:06:42,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 143.14285714285714) internal successors, (1002), 7 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:42,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:42,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 357 [2023-08-27 01:06:42,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:43,603 INFO L124 PetriNetUnfolderBase]: 8312/10540 cut-off events. [2023-08-27 01:06:43,604 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-27 01:06:43,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21129 conditions, 10540 events. 8312/10540 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 51049 event pairs, 4439 based on Foata normal form. 0/2834 useless extension candidates. Maximal degree in co-relation 21075. Up to 10460 conditions per place. [2023-08-27 01:06:43,641 INFO L140 encePairwiseOnDemand]: 352/357 looper letters, 41 selfloop transitions, 13 changer transitions 0/57 dead transitions. [2023-08-27 01:06:43,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 263 flow [2023-08-27 01:06:43,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:06:43,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:06:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1051 transitions. [2023-08-27 01:06:43,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42056822729091636 [2023-08-27 01:06:43,644 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1051 transitions. [2023-08-27 01:06:43,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1051 transitions. [2023-08-27 01:06:43,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:43,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1051 transitions. [2023-08-27 01:06:43,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 150.14285714285714) internal successors, (1051), 7 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:43,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:43,657 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:43,657 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 119 flow. Second operand 7 states and 1051 transitions. [2023-08-27 01:06:43,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 263 flow [2023-08-27 01:06:43,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 258 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 01:06:43,659 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 198 flow [2023-08-27 01:06:43,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2023-08-27 01:06:43,659 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -1 predicate places. [2023-08-27 01:06:43,659 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 198 flow [2023-08-27 01:06:43,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 143.14285714285714) internal successors, (1002), 7 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:43,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:43,660 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 01:06:43,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 01:06:43,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:06:43,866 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:06:43,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:43,867 INFO L85 PathProgramCache]: Analyzing trace with hash 32124594, now seen corresponding path program 1 times [2023-08-27 01:06:43,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:43,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073320286] [2023-08-27 01:06:43,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:43,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:06:43,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:43,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073320286] [2023-08-27 01:06:43,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073320286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:06:43,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:06:43,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:06:43,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119862837] [2023-08-27 01:06:43,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:06:43,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:06:43,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:43,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:06:43,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:06:43,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 357 [2023-08-27 01:06:43,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:43,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:43,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 357 [2023-08-27 01:06:43,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:44,745 INFO L124 PetriNetUnfolderBase]: 8309/10536 cut-off events. [2023-08-27 01:06:44,745 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-08-27 01:06:44,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21137 conditions, 10536 events. 8309/10536 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 51009 event pairs, 4439 based on Foata normal form. 0/2838 useless extension candidates. Maximal degree in co-relation 21101. Up to 10457 conditions per place. [2023-08-27 01:06:44,775 INFO L140 encePairwiseOnDemand]: 354/357 looper letters, 44 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2023-08-27 01:06:44,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 271 flow [2023-08-27 01:06:44,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:06:44,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:06:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-08-27 01:06:44,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2023-08-27 01:06:44,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-08-27 01:06:44,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-08-27 01:06:44,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:44,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-08-27 01:06:44,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:44,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:44,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:44,780 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 198 flow. Second operand 3 states and 469 transitions. [2023-08-27 01:06:44,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 271 flow [2023-08-27 01:06:44,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 250 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 01:06:44,782 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 162 flow [2023-08-27 01:06:44,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2023-08-27 01:06:44,782 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -2 predicate places. [2023-08-27 01:06:44,782 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 162 flow [2023-08-27 01:06:44,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:44,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:44,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 01:06:44,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 01:06:44,783 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:06:44,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:44,783 INFO L85 PathProgramCache]: Analyzing trace with hash 996057984, now seen corresponding path program 1 times [2023-08-27 01:06:44,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:44,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656289456] [2023-08-27 01:06:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:44,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:44,885 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 01:06:44,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:44,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656289456] [2023-08-27 01:06:44,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656289456] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:06:44,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:06:44,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 01:06:44,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083896070] [2023-08-27 01:06:44,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:06:44,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 01:06:44,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:44,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 01:06:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:06:44,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 357 [2023-08-27 01:06:44,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:44,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:44,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 357 [2023-08-27 01:06:44,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:45,743 INFO L124 PetriNetUnfolderBase]: 9361/12477 cut-off events. [2023-08-27 01:06:45,743 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-08-27 01:06:45,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25035 conditions, 12477 events. 9361/12477 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 69117 event pairs, 5250 based on Foata normal form. 0/4420 useless extension candidates. Maximal degree in co-relation 25001. Up to 8973 conditions per place. [2023-08-27 01:06:45,778 INFO L140 encePairwiseOnDemand]: 345/357 looper letters, 101 selfloop transitions, 5 changer transitions 0/108 dead transitions. [2023-08-27 01:06:45,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 108 transitions, 492 flow [2023-08-27 01:06:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:06:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:06:45,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 737 transitions. [2023-08-27 01:06:45,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128851540616246 [2023-08-27 01:06:45,781 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 737 transitions. [2023-08-27 01:06:45,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 737 transitions. [2023-08-27 01:06:45,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:45,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 737 transitions. [2023-08-27 01:06:45,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:45,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 357.0) internal successors, (2142), 6 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:45,785 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 357.0) internal successors, (2142), 6 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:45,785 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 162 flow. Second operand 5 states and 737 transitions. [2023-08-27 01:06:45,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 108 transitions, 492 flow [2023-08-27 01:06:45,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 108 transitions, 480 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:06:45,789 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 187 flow [2023-08-27 01:06:45,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=187, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-27 01:06:45,790 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-08-27 01:06:45,790 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 187 flow [2023-08-27 01:06:45,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:45,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:45,791 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 01:06:45,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 01:06:45,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:06:45,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:45,792 INFO L85 PathProgramCache]: Analyzing trace with hash 806996721, now seen corresponding path program 2 times [2023-08-27 01:06:45,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:45,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866627192] [2023-08-27 01:06:45,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:45,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:45,875 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 01:06:45,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:45,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866627192] [2023-08-27 01:06:45,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866627192] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:06:45,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853128087] [2023-08-27 01:06:45,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:06:45,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:06:45,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:06:45,881 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 01:06:45,884 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 01:06:45,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:06:45,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:06:45,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:06:45,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:06:46,001 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 01:06:46,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:06:46,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853128087] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:06:46,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:06:46,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 01:06:46,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506768579] [2023-08-27 01:06:46,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:06:46,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:06:46,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:46,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:06:46,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:06:46,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 357 [2023-08-27 01:06:46,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:46,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:46,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 357 [2023-08-27 01:06:46,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:46,976 INFO L124 PetriNetUnfolderBase]: 10113/13007 cut-off events. [2023-08-27 01:06:46,976 INFO L125 PetriNetUnfolderBase]: For 1124/1336 co-relation queries the response was YES. [2023-08-27 01:06:46,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29933 conditions, 13007 events. 10113/13007 cut-off events. For 1124/1336 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 67346 event pairs, 5555 based on Foata normal form. 213/4071 useless extension candidates. Maximal degree in co-relation 29905. Up to 12918 conditions per place. [2023-08-27 01:06:47,019 INFO L140 encePairwiseOnDemand]: 355/357 looper letters, 49 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-27 01:06:47,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 277 flow [2023-08-27 01:06:47,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:06:47,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:06:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-08-27 01:06:47,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43977591036414565 [2023-08-27 01:06:47,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-08-27 01:06:47,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-08-27 01:06:47,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:47,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-08-27 01:06:47,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:47,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:47,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:47,023 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 187 flow. Second operand 3 states and 471 transitions. [2023-08-27 01:06:47,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 277 flow [2023-08-27 01:06:47,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 256 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-27 01:06:47,025 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 158 flow [2023-08-27 01:06:47,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2023-08-27 01:06:47,026 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-08-27 01:06:47,026 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 158 flow [2023-08-27 01:06:47,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:47,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:47,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 01:06:47,033 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 01:06:47,231 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 01:06:47,233 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:06:47,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash 807191358, now seen corresponding path program 1 times [2023-08-27 01:06:47,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:47,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672589468] [2023-08-27 01:06:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:47,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:47,270 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 01:06:47,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:47,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672589468] [2023-08-27 01:06:47,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672589468] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:06:47,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:06:47,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:06:47,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154701554] [2023-08-27 01:06:47,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:06:47,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:06:47,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:47,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:06:47,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:06:47,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 357 [2023-08-27 01:06:47,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:47,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:47,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 357 [2023-08-27 01:06:47,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:48,354 INFO L124 PetriNetUnfolderBase]: 13705/17930 cut-off events. [2023-08-27 01:06:48,354 INFO L125 PetriNetUnfolderBase]: For 1941/1941 co-relation queries the response was YES. [2023-08-27 01:06:48,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40164 conditions, 17930 events. 13705/17930 cut-off events. For 1941/1941 co-relation queries the response was YES. Maximal size of possible extension queue 1636. Compared 97620 event pairs, 4447 based on Foata normal form. 0/5871 useless extension candidates. Maximal degree in co-relation 40154. Up to 12065 conditions per place. [2023-08-27 01:06:48,409 INFO L140 encePairwiseOnDemand]: 352/357 looper letters, 76 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2023-08-27 01:06:48,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 392 flow [2023-08-27 01:06:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:06:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:06:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 505 transitions. [2023-08-27 01:06:48,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715219421101774 [2023-08-27 01:06:48,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 505 transitions. [2023-08-27 01:06:48,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 505 transitions. [2023-08-27 01:06:48,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:48,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 505 transitions. [2023-08-27 01:06:48,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:48,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:48,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:48,414 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 158 flow. Second operand 3 states and 505 transitions. [2023-08-27 01:06:48,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 392 flow [2023-08-27 01:06:48,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 83 transitions, 391 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:06:48,417 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 188 flow [2023-08-27 01:06:48,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-08-27 01:06:48,419 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -1 predicate places. [2023-08-27 01:06:48,419 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 188 flow [2023-08-27 01:06:48,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:48,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:48,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 01:06:48,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 01:06:48,420 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:06:48,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:48,420 INFO L85 PathProgramCache]: Analyzing trace with hash 807191259, now seen corresponding path program 1 times [2023-08-27 01:06:48,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:48,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192776944] [2023-08-27 01:06:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:48,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:48,508 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 01:06:48,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:48,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192776944] [2023-08-27 01:06:48,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192776944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:06:48,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:06:48,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:06:48,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379532846] [2023-08-27 01:06:48,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:06:48,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:06:48,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:48,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:06:48,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:06:48,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 357 [2023-08-27 01:06:48,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:48,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:48,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 357 [2023-08-27 01:06:48,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:49,597 INFO L124 PetriNetUnfolderBase]: 11820/15603 cut-off events. [2023-08-27 01:06:49,597 INFO L125 PetriNetUnfolderBase]: For 2225/3073 co-relation queries the response was YES. [2023-08-27 01:06:49,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36565 conditions, 15603 events. 11820/15603 cut-off events. For 2225/3073 co-relation queries the response was YES. Maximal size of possible extension queue 1507. Compared 88838 event pairs, 3236 based on Foata normal form. 848/6341 useless extension candidates. Maximal degree in co-relation 36554. Up to 8859 conditions per place. [2023-08-27 01:06:49,644 INFO L140 encePairwiseOnDemand]: 353/357 looper letters, 81 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-08-27 01:06:49,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 87 transitions, 425 flow [2023-08-27 01:06:49,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:06:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:06:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-08-27 01:06:49,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4827264239028945 [2023-08-27 01:06:49,646 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-08-27 01:06:49,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-08-27 01:06:49,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:49,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-08-27 01:06:49,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:49,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:49,649 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:49,649 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 188 flow. Second operand 3 states and 517 transitions. [2023-08-27 01:06:49,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 87 transitions, 425 flow [2023-08-27 01:06:49,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 87 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:06:49,651 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 193 flow [2023-08-27 01:06:49,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2023-08-27 01:06:49,652 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-08-27 01:06:49,652 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 193 flow [2023-08-27 01:06:49,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:49,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:49,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 01:06:49,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 01:06:49,652 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:06:49,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:49,653 INFO L85 PathProgramCache]: Analyzing trace with hash 807191262, now seen corresponding path program 1 times [2023-08-27 01:06:49,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:49,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843671629] [2023-08-27 01:06:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:49,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:49,840 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 01:06:49,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:49,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843671629] [2023-08-27 01:06:49,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843671629] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:06:49,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547505431] [2023-08-27 01:06:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:49,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:06:49,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:06:49,842 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 01:06:49,845 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 01:06:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:49,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 01:06:49,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:06:50,010 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 01:06:50,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:06:50,039 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 01:06:50,059 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 01:06:50,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:06:50,123 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:06:50,125 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 01:06:50,132 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:06:50,132 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 01:06:50,138 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 7 treesize of output 5 [2023-08-27 01:06:50,162 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 01:06:50,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547505431] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:06:50,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:06:50,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-27 01:06:50,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416183798] [2023-08-27 01:06:50,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:06:50,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 01:06:50,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:50,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 01:06:50,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=119, Unknown=2, NotChecked=0, Total=156 [2023-08-27 01:06:50,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 357 [2023-08-27 01:06:50,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 193 flow. Second operand has 13 states, 13 states have (on average 121.3076923076923) internal successors, (1577), 13 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:50,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:50,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 357 [2023-08-27 01:06:50,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:51,643 INFO L124 PetriNetUnfolderBase]: 15925/21475 cut-off events. [2023-08-27 01:06:51,643 INFO L125 PetriNetUnfolderBase]: For 6905/6905 co-relation queries the response was YES. [2023-08-27 01:06:51,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49512 conditions, 21475 events. 15925/21475 cut-off events. For 6905/6905 co-relation queries the response was YES. Maximal size of possible extension queue 2226. Compared 133305 event pairs, 6203 based on Foata normal form. 0/8129 useless extension candidates. Maximal degree in co-relation 49499. Up to 15610 conditions per place. [2023-08-27 01:06:51,708 INFO L140 encePairwiseOnDemand]: 343/357 looper letters, 68 selfloop transitions, 24 changer transitions 0/94 dead transitions. [2023-08-27 01:06:51,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 94 transitions, 501 flow [2023-08-27 01:06:51,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:06:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:06:51,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1043 transitions. [2023-08-27 01:06:51,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36519607843137253 [2023-08-27 01:06:51,711 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1043 transitions. [2023-08-27 01:06:51,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1043 transitions. [2023-08-27 01:06:51,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:51,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1043 transitions. [2023-08-27 01:06:51,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:51,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:51,715 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:51,715 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 193 flow. Second operand 8 states and 1043 transitions. [2023-08-27 01:06:51,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 94 transitions, 501 flow [2023-08-27 01:06:51,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 94 transitions, 495 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:06:51,719 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 333 flow [2023-08-27 01:06:51,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=333, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2023-08-27 01:06:51,719 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2023-08-27 01:06:51,719 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 333 flow [2023-08-27 01:06:51,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 121.3076923076923) internal successors, (1577), 13 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:51,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:51,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 01:06:51,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 01:06:51,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:06:51,925 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:06:51,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:51,925 INFO L85 PathProgramCache]: Analyzing trace with hash 807191263, now seen corresponding path program 1 times [2023-08-27 01:06:51,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:51,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353084221] [2023-08-27 01:06:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:51,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:52,125 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 01:06:52,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:52,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353084221] [2023-08-27 01:06:52,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353084221] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:06:52,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299297328] [2023-08-27 01:06:52,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:52,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:06:52,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:06:52,128 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 01:06:52,130 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 01:06:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:52,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 01:06:52,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:06:52,260 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 01:06:52,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:06:52,290 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 01:06:52,305 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 01:06:52,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:06:52,325 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_250 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_250) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2023-08-27 01:06:52,331 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:06:52,331 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 01:06:52,336 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:06:52,336 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 01:06:52,346 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 5 treesize of output 3 [2023-08-27 01:06:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 01:06:52,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299297328] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:06:52,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:06:52,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-27 01:06:52,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321170879] [2023-08-27 01:06:52,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:06:52,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 01:06:52,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:52,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 01:06:52,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=102, Unknown=1, NotChecked=20, Total=156 [2023-08-27 01:06:52,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 357 [2023-08-27 01:06:52,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 333 flow. Second operand has 13 states, 13 states have (on average 121.3076923076923) internal successors, (1577), 13 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:52,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:52,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 357 [2023-08-27 01:06:52,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:54,303 INFO L124 PetriNetUnfolderBase]: 16814/22783 cut-off events. [2023-08-27 01:06:54,303 INFO L125 PetriNetUnfolderBase]: For 13935/13935 co-relation queries the response was YES. [2023-08-27 01:06:54,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54582 conditions, 22783 events. 16814/22783 cut-off events. For 13935/13935 co-relation queries the response was YES. Maximal size of possible extension queue 2412. Compared 144767 event pairs, 6918 based on Foata normal form. 1/9008 useless extension candidates. Maximal degree in co-relation 54566. Up to 16899 conditions per place. [2023-08-27 01:06:54,396 INFO L140 encePairwiseOnDemand]: 343/357 looper letters, 68 selfloop transitions, 27 changer transitions 0/97 dead transitions. [2023-08-27 01:06:54,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 97 transitions, 600 flow [2023-08-27 01:06:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:06:54,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:06:54,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1042 transitions. [2023-08-27 01:06:54,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3648459383753501 [2023-08-27 01:06:54,398 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1042 transitions. [2023-08-27 01:06:54,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1042 transitions. [2023-08-27 01:06:54,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:54,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1042 transitions. [2023-08-27 01:06:54,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.25) internal successors, (1042), 8 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:54,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:54,403 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:54,403 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 333 flow. Second operand 8 states and 1042 transitions. [2023-08-27 01:06:54,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 97 transitions, 600 flow [2023-08-27 01:06:54,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 97 transitions, 589 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 01:06:54,415 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 405 flow [2023-08-27 01:06:54,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=405, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2023-08-27 01:06:54,415 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2023-08-27 01:06:54,415 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 405 flow [2023-08-27 01:06:54,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 121.3076923076923) internal successors, (1577), 13 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:54,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:54,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:06:54,421 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 01:06:54,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:06:54,620 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:06:54,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:54,621 INFO L85 PathProgramCache]: Analyzing trace with hash -559721091, now seen corresponding path program 1 times [2023-08-27 01:06:54,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:54,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427267737] [2023-08-27 01:06:54,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:54,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:54,703 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 01:06:54,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:54,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427267737] [2023-08-27 01:06:54,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427267737] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:06:54,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:06:54,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 01:06:54,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213848011] [2023-08-27 01:06:54,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:06:54,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 01:06:54,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:54,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 01:06:54,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:06:54,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 357 [2023-08-27 01:06:54,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 405 flow. Second operand has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:54,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:54,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 357 [2023-08-27 01:06:54,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:55,667 INFO L124 PetriNetUnfolderBase]: 10225/15305 cut-off events. [2023-08-27 01:06:55,667 INFO L125 PetriNetUnfolderBase]: For 21193/21961 co-relation queries the response was YES. [2023-08-27 01:06:55,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39821 conditions, 15305 events. 10225/15305 cut-off events. For 21193/21961 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 103218 event pairs, 8434 based on Foata normal form. 768/8588 useless extension candidates. Maximal degree in co-relation 39803. Up to 14746 conditions per place. [2023-08-27 01:06:55,722 INFO L140 encePairwiseOnDemand]: 347/357 looper letters, 104 selfloop transitions, 5 changer transitions 0/112 dead transitions. [2023-08-27 01:06:55,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 112 transitions, 723 flow [2023-08-27 01:06:55,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:06:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:06:55,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 696 transitions. [2023-08-27 01:06:55,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3899159663865546 [2023-08-27 01:06:55,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 696 transitions. [2023-08-27 01:06:55,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 696 transitions. [2023-08-27 01:06:55,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:55,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 696 transitions. [2023-08-27 01:06:55,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:55,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 357.0) internal successors, (2142), 6 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:55,728 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 357.0) internal successors, (2142), 6 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:55,728 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 405 flow. Second operand 5 states and 696 transitions. [2023-08-27 01:06:55,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 112 transitions, 723 flow [2023-08-27 01:06:55,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 112 transitions, 709 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 01:06:55,738 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 424 flow [2023-08-27 01:06:55,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=424, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2023-08-27 01:06:55,739 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 19 predicate places. [2023-08-27 01:06:55,739 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 424 flow [2023-08-27 01:06:55,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:55,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:55,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:06:55,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 01:06:55,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:06:55,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:55,739 INFO L85 PathProgramCache]: Analyzing trace with hash -746674744, now seen corresponding path program 1 times [2023-08-27 01:06:55,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:55,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586926123] [2023-08-27 01:06:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:55,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:55,934 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 01:06:55,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:55,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586926123] [2023-08-27 01:06:55,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586926123] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:06:55,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233729638] [2023-08-27 01:06:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:55,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:06:55,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:06:55,935 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 01:06:55,937 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 01:06:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:56,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 01:06:56,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:06:56,068 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 01:06:56,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:06:56,091 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 01:06:56,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:06:56,119 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 01:06:56,124 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 01:06:56,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:06:56,149 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_312 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_312) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-08-27 01:06:56,195 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:06:56,195 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 01:06:56,200 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:06:56,201 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 73 treesize of output 69 [2023-08-27 01:06:56,206 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 56 treesize of output 52 [2023-08-27 01:06:56,211 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 26 treesize of output 24 [2023-08-27 01:06:56,242 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 01:06:56,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233729638] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:06:56,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:06:56,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-27 01:06:56,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187394601] [2023-08-27 01:06:56,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:06:56,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 01:06:56,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:56,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 01:06:56,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=143, Unknown=1, NotChecked=24, Total=210 [2023-08-27 01:06:56,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 357 [2023-08-27 01:06:56,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 424 flow. Second operand has 15 states, 15 states have (on average 118.26666666666667) internal successors, (1774), 15 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:56,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:56,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 357 [2023-08-27 01:06:56,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:57,757 INFO L124 PetriNetUnfolderBase]: 14066/19128 cut-off events. [2023-08-27 01:06:57,758 INFO L125 PetriNetUnfolderBase]: For 20286/20364 co-relation queries the response was YES. [2023-08-27 01:06:57,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53366 conditions, 19128 events. 14066/19128 cut-off events. For 20286/20364 co-relation queries the response was YES. Maximal size of possible extension queue 2162. Compared 121005 event pairs, 2406 based on Foata normal form. 89/7708 useless extension candidates. Maximal degree in co-relation 53345. Up to 13055 conditions per place. [2023-08-27 01:06:57,838 INFO L140 encePairwiseOnDemand]: 344/357 looper letters, 104 selfloop transitions, 35 changer transitions 0/142 dead transitions. [2023-08-27 01:06:57,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 142 transitions, 990 flow [2023-08-27 01:06:57,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:06:57,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:06:57,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1050 transitions. [2023-08-27 01:06:57,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2023-08-27 01:06:57,841 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1050 transitions. [2023-08-27 01:06:57,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1050 transitions. [2023-08-27 01:06:57,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:57,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1050 transitions. [2023-08-27 01:06:57,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 131.25) internal successors, (1050), 8 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:57,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:57,846 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:57,846 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 424 flow. Second operand 8 states and 1050 transitions. [2023-08-27 01:06:57,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 142 transitions, 990 flow [2023-08-27 01:06:57,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 142 transitions, 985 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:06:57,868 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 643 flow [2023-08-27 01:06:57,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=643, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2023-08-27 01:06:57,868 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2023-08-27 01:06:57,868 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 643 flow [2023-08-27 01:06:57,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 118.26666666666667) internal successors, (1774), 15 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:57,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:57,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:06:57,876 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 01:06:58,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-27 01:06:58,074 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:06:58,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:58,074 INFO L85 PathProgramCache]: Analyzing trace with hash -746674743, now seen corresponding path program 1 times [2023-08-27 01:06:58,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:58,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922816358] [2023-08-27 01:06:58,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:58,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:58,221 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 01:06:58,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:58,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922816358] [2023-08-27 01:06:58,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922816358] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:06:58,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212339149] [2023-08-27 01:06:58,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:58,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:06:58,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:06:58,223 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 01:06:58,252 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 01:06:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:58,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 01:06:58,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:06:58,359 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 01:06:58,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:06:58,380 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 14 treesize of output 16 [2023-08-27 01:06:58,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:06:58,398 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 14 treesize of output 16 [2023-08-27 01:06:58,412 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 01:06:58,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:06:58,469 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:06:58,469 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 01:06:58,475 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:06:58,475 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 63 treesize of output 59 [2023-08-27 01:06:58,478 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 48 treesize of output 44 [2023-08-27 01:06:58,481 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 22 treesize of output 20 [2023-08-27 01:06:58,520 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 01:06:58,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212339149] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:06:58,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:06:58,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-27 01:06:58,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561254120] [2023-08-27 01:06:58,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:06:58,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 01:06:58,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:58,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 01:06:58,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=187, Unknown=4, NotChecked=0, Total=240 [2023-08-27 01:06:58,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 357 [2023-08-27 01:06:58,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 643 flow. Second operand has 16 states, 16 states have (on average 118.3125) internal successors, (1893), 16 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:58,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:58,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 357 [2023-08-27 01:06:58,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:07:00,100 INFO L124 PetriNetUnfolderBase]: 13600/18441 cut-off events. [2023-08-27 01:07:00,100 INFO L125 PetriNetUnfolderBase]: For 28535/28613 co-relation queries the response was YES. [2023-08-27 01:07:00,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54324 conditions, 18441 events. 13600/18441 cut-off events. For 28535/28613 co-relation queries the response was YES. Maximal size of possible extension queue 2069. Compared 114966 event pairs, 2325 based on Foata normal form. 89/7473 useless extension candidates. Maximal degree in co-relation 54301. Up to 12405 conditions per place. [2023-08-27 01:07:00,177 INFO L140 encePairwiseOnDemand]: 344/357 looper letters, 103 selfloop transitions, 36 changer transitions 0/142 dead transitions. [2023-08-27 01:07:00,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 142 transitions, 1097 flow [2023-08-27 01:07:00,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:07:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:07:00,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1049 transitions. [2023-08-27 01:07:00,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36729691876750703 [2023-08-27 01:07:00,179 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1049 transitions. [2023-08-27 01:07:00,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1049 transitions. [2023-08-27 01:07:00,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:07:00,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1049 transitions. [2023-08-27 01:07:00,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 131.125) internal successors, (1049), 8 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:00,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:00,184 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:00,184 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 643 flow. Second operand 8 states and 1049 transitions. [2023-08-27 01:07:00,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 142 transitions, 1097 flow [2023-08-27 01:07:00,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 142 transitions, 1059 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-08-27 01:07:00,216 INFO L231 Difference]: Finished difference. Result has 89 places, 89 transitions, 686 flow [2023-08-27 01:07:00,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=686, PETRI_PLACES=89, PETRI_TRANSITIONS=89} [2023-08-27 01:07:00,216 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2023-08-27 01:07:00,217 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 89 transitions, 686 flow [2023-08-27 01:07:00,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 118.3125) internal successors, (1893), 16 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:00,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:07:00,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:07:00,224 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 01:07:00,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:00,422 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:07:00,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:07:00,422 INFO L85 PathProgramCache]: Analyzing trace with hash -746870327, now seen corresponding path program 1 times [2023-08-27 01:07:00,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:07:00,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056371537] [2023-08-27 01:07:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:00,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:07:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:00,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:07:00,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056371537] [2023-08-27 01:07:00,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056371537] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:07:00,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421504192] [2023-08-27 01:07:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:00,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:00,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:07:00,497 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 01:07:00,499 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 01:07:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:00,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:07:00,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:07:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:00,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:07:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:00,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421504192] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:07:00,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:07:00,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 01:07:00,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693340011] [2023-08-27 01:07:00,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:07:00,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 01:07:00,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:07:00,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 01:07:00,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-27 01:07:00,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 357 [2023-08-27 01:07:00,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 89 transitions, 686 flow. Second operand has 14 states, 14 states have (on average 127.28571428571429) internal successors, (1782), 14 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:00,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:07:00,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 357 [2023-08-27 01:07:00,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:07:02,576 INFO L124 PetriNetUnfolderBase]: 19554/26370 cut-off events. [2023-08-27 01:07:02,576 INFO L125 PetriNetUnfolderBase]: For 58804/58885 co-relation queries the response was YES. [2023-08-27 01:07:02,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77130 conditions, 26370 events. 19554/26370 cut-off events. For 58804/58885 co-relation queries the response was YES. Maximal size of possible extension queue 2689. Compared 166601 event pairs, 10196 based on Foata normal form. 929/11838 useless extension candidates. Maximal degree in co-relation 77106. Up to 17840 conditions per place. [2023-08-27 01:07:02,708 INFO L140 encePairwiseOnDemand]: 345/357 looper letters, 160 selfloop transitions, 17 changer transitions 0/180 dead transitions. [2023-08-27 01:07:02,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 180 transitions, 1417 flow [2023-08-27 01:07:02,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:07:02,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:07:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1017 transitions. [2023-08-27 01:07:02,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069627851140456 [2023-08-27 01:07:02,710 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1017 transitions. [2023-08-27 01:07:02,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1017 transitions. [2023-08-27 01:07:02,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:07:02,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1017 transitions. [2023-08-27 01:07:02,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:02,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:02,720 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:02,720 INFO L175 Difference]: Start difference. First operand has 89 places, 89 transitions, 686 flow. Second operand 7 states and 1017 transitions. [2023-08-27 01:07:02,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 180 transitions, 1417 flow [2023-08-27 01:07:02,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 180 transitions, 1383 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-27 01:07:02,791 INFO L231 Difference]: Finished difference. Result has 95 places, 99 transitions, 885 flow [2023-08-27 01:07:02,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=885, PETRI_PLACES=95, PETRI_TRANSITIONS=99} [2023-08-27 01:07:02,792 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 37 predicate places. [2023-08-27 01:07:02,792 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 99 transitions, 885 flow [2023-08-27 01:07:02,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 127.28571428571429) internal successors, (1782), 14 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:02,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:07:02,793 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-27 01:07:02,797 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 01:07:02,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:02,993 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:07:02,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:07:02,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1859163636, now seen corresponding path program 1 times [2023-08-27 01:07:02,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:07:02,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348206350] [2023-08-27 01:07:02,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:02,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:07:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:07:03,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:07:03,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348206350] [2023-08-27 01:07:03,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348206350] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:07:03,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181952892] [2023-08-27 01:07:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:03,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:03,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:07:03,036 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 01:07:03,038 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 01:07:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:03,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:07:03,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:07:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:07:03,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:07:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:07:03,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181952892] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:07:03,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:07:03,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 01:07:03,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969759595] [2023-08-27 01:07:03,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:07:03,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:07:03,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:07:03,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:07:03,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:07:03,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 357 [2023-08-27 01:07:03,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 99 transitions, 885 flow. Second operand has 7 states, 7 states have (on average 145.71428571428572) internal successors, (1020), 7 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:03,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:07:03,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 357 [2023-08-27 01:07:03,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:07:07,454 INFO L124 PetriNetUnfolderBase]: 37627/50425 cut-off events. [2023-08-27 01:07:07,454 INFO L125 PetriNetUnfolderBase]: For 91767/91848 co-relation queries the response was YES. [2023-08-27 01:07:07,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162646 conditions, 50425 events. 37627/50425 cut-off events. For 91767/91848 co-relation queries the response was YES. Maximal size of possible extension queue 3873. Compared 333273 event pairs, 9039 based on Foata normal form. 81/20992 useless extension candidates. Maximal degree in co-relation 162618. Up to 18724 conditions per place. [2023-08-27 01:07:07,792 INFO L140 encePairwiseOnDemand]: 352/357 looper letters, 254 selfloop transitions, 39 changer transitions 0/296 dead transitions. [2023-08-27 01:07:07,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 296 transitions, 2842 flow [2023-08-27 01:07:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:07:07,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:07:07,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1193 transitions. [2023-08-27 01:07:07,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477390956382553 [2023-08-27 01:07:07,795 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1193 transitions. [2023-08-27 01:07:07,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1193 transitions. [2023-08-27 01:07:07,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:07:07,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1193 transitions. [2023-08-27 01:07:07,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:07,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:07,799 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:07,799 INFO L175 Difference]: Start difference. First operand has 95 places, 99 transitions, 885 flow. Second operand 7 states and 1193 transitions. [2023-08-27 01:07:07,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 296 transitions, 2842 flow [2023-08-27 01:07:08,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 296 transitions, 2828 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-27 01:07:08,618 INFO L231 Difference]: Finished difference. Result has 101 places, 114 transitions, 1208 flow [2023-08-27 01:07:08,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1208, PETRI_PLACES=101, PETRI_TRANSITIONS=114} [2023-08-27 01:07:08,619 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 43 predicate places. [2023-08-27 01:07:08,619 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 114 transitions, 1208 flow [2023-08-27 01:07:08,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.71428571428572) internal successors, (1020), 7 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:08,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:07:08,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:07:08,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-27 01:07:08,824 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,SelfDestructingSolverStorable13 [2023-08-27 01:07:08,825 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:07:08,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:07:08,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1672014502, now seen corresponding path program 1 times [2023-08-27 01:07:08,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:07:08,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628391342] [2023-08-27 01:07:08,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:08,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:07:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:08,964 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 01:07:08,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:07:08,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628391342] [2023-08-27 01:07:08,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628391342] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:07:08,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348625831] [2023-08-27 01:07:08,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:08,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:08,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:07:08,966 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 01:07:08,975 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 01:07:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:09,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 01:07:09,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:07:09,102 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 01:07:09,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:07:09,125 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 01:07:09,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:07:09,144 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 01:07:09,152 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 01:07:09,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:07:09,210 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:07:09,211 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 01:07:09,216 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:07:09,216 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 01:07:09,220 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 01:07:09,238 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 01:07:09,250 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 01:07:09,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348625831] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:07:09,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:07:09,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-27 01:07:09,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826088713] [2023-08-27 01:07:09,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:07:09,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 01:07:09,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:07:09,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 01:07:09,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=163, Unknown=3, NotChecked=0, Total=210 [2023-08-27 01:07:09,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 357 [2023-08-27 01:07:09,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 114 transitions, 1208 flow. Second operand has 15 states, 15 states have (on average 118.4) internal successors, (1776), 15 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:09,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:07:09,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 357 [2023-08-27 01:07:09,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:07:15,557 INFO L124 PetriNetUnfolderBase]: 47187/67375 cut-off events. [2023-08-27 01:07:15,557 INFO L125 PetriNetUnfolderBase]: For 303981/304820 co-relation queries the response was YES. [2023-08-27 01:07:15,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224567 conditions, 67375 events. 47187/67375 cut-off events. For 303981/304820 co-relation queries the response was YES. Maximal size of possible extension queue 5751. Compared 523596 event pairs, 13450 based on Foata normal form. 837/33974 useless extension candidates. Maximal degree in co-relation 224537. Up to 39656 conditions per place. [2023-08-27 01:07:16,013 INFO L140 encePairwiseOnDemand]: 343/357 looper letters, 187 selfloop transitions, 44 changer transitions 0/239 dead transitions. [2023-08-27 01:07:16,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 239 transitions, 2993 flow [2023-08-27 01:07:16,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:07:16,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:07:16,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1053 transitions. [2023-08-27 01:07:16,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36869747899159666 [2023-08-27 01:07:16,016 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1053 transitions. [2023-08-27 01:07:16,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1053 transitions. [2023-08-27 01:07:16,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:07:16,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1053 transitions. [2023-08-27 01:07:16,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 131.625) internal successors, (1053), 8 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:16,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:16,021 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:16,021 INFO L175 Difference]: Start difference. First operand has 101 places, 114 transitions, 1208 flow. Second operand 8 states and 1053 transitions. [2023-08-27 01:07:16,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 239 transitions, 2993 flow [2023-08-27 01:07:16,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 239 transitions, 2865 flow, removed 48 selfloop flow, removed 1 redundant places. [2023-08-27 01:07:16,317 INFO L231 Difference]: Finished difference. Result has 109 places, 143 transitions, 1485 flow [2023-08-27 01:07:16,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1485, PETRI_PLACES=109, PETRI_TRANSITIONS=143} [2023-08-27 01:07:16,317 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 51 predicate places. [2023-08-27 01:07:16,318 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 143 transitions, 1485 flow [2023-08-27 01:07:16,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 118.4) internal successors, (1776), 15 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:16,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:07:16,318 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 01:07:16,326 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 01:07:16,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 01:07:16,523 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:07:16,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:07:16,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1799496448, now seen corresponding path program 1 times [2023-08-27 01:07:16,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:07:16,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957070] [2023-08-27 01:07:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:16,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:07:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:07:16,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:07:16,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957070] [2023-08-27 01:07:16,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957070] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:07:16,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881564634] [2023-08-27 01:07:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:16,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:16,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:07:16,575 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 01:07:16,577 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 01:07:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:16,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 01:07:16,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:07:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:07:16,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:07:16,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881564634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:07:16,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:07:16,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-27 01:07:16,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518462629] [2023-08-27 01:07:16,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:07:16,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 01:07:16,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:07:16,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 01:07:16,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 01:07:16,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 357 [2023-08-27 01:07:16,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 143 transitions, 1485 flow. Second operand has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:16,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:07:16,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 357 [2023-08-27 01:07:16,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:07:23,153 INFO L124 PetriNetUnfolderBase]: 48487/67959 cut-off events. [2023-08-27 01:07:23,154 INFO L125 PetriNetUnfolderBase]: For 152705/152915 co-relation queries the response was YES. [2023-08-27 01:07:23,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237384 conditions, 67959 events. 48487/67959 cut-off events. For 152705/152915 co-relation queries the response was YES. Maximal size of possible extension queue 5440. Compared 513517 event pairs, 11319 based on Foata normal form. 1618/37104 useless extension candidates. Maximal degree in co-relation 237350. Up to 34397 conditions per place. [2023-08-27 01:07:23,547 INFO L140 encePairwiseOnDemand]: 353/357 looper letters, 246 selfloop transitions, 26 changer transitions 0/276 dead transitions. [2023-08-27 01:07:23,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 276 transitions, 2773 flow [2023-08-27 01:07:23,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:07:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:07:23,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 842 transitions. [2023-08-27 01:07:23,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47170868347338935 [2023-08-27 01:07:23,550 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 842 transitions. [2023-08-27 01:07:23,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 842 transitions. [2023-08-27 01:07:23,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:07:23,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 842 transitions. [2023-08-27 01:07:23,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.4) internal successors, (842), 5 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:23,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 357.0) internal successors, (2142), 6 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:23,553 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 357.0) internal successors, (2142), 6 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:23,553 INFO L175 Difference]: Start difference. First operand has 109 places, 143 transitions, 1485 flow. Second operand 5 states and 842 transitions. [2023-08-27 01:07:23,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 276 transitions, 2773 flow [2023-08-27 01:07:25,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 276 transitions, 2723 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-08-27 01:07:25,758 INFO L231 Difference]: Finished difference. Result has 109 places, 131 transitions, 1282 flow [2023-08-27 01:07:25,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1282, PETRI_PLACES=109, PETRI_TRANSITIONS=131} [2023-08-27 01:07:25,759 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 51 predicate places. [2023-08-27 01:07:25,759 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 131 transitions, 1282 flow [2023-08-27 01:07:25,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:25,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:07:25,759 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-27 01:07:25,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-27 01:07:25,960 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,SelfDestructingSolverStorable15 [2023-08-27 01:07:25,960 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:07:25,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:07:25,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1859163733, now seen corresponding path program 1 times [2023-08-27 01:07:25,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:07:25,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360138015] [2023-08-27 01:07:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:25,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:07:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:26,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:26,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:07:26,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360138015] [2023-08-27 01:07:26,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360138015] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:07:26,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062509614] [2023-08-27 01:07:26,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:26,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:26,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:07:26,163 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 01:07:26,165 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 01:07:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:26,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 01:07:26,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:07:26,315 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 13 treesize of output 9 [2023-08-27 01:07:26,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:07:26,333 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 18 treesize of output 20 [2023-08-27 01:07:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:26,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:07:26,417 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_559 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_559) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-08-27 01:07:26,422 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:07:26,423 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 26 treesize of output 27 [2023-08-27 01:07:26,428 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:07:26,428 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 43 treesize of output 37 [2023-08-27 01:07:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-27 01:07:26,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062509614] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:07:26,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:07:26,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 01:07:26,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318130485] [2023-08-27 01:07:26,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:07:26,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 01:07:26,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:07:26,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 01:07:26,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=289, Unknown=1, NotChecked=34, Total=380 [2023-08-27 01:07:26,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 357 [2023-08-27 01:07:26,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 131 transitions, 1282 flow. Second operand has 20 states, 20 states have (on average 121.2) internal successors, (2424), 20 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:26,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:07:26,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 357 [2023-08-27 01:07:26,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:07:33,169 INFO L124 PetriNetUnfolderBase]: 48050/67508 cut-off events. [2023-08-27 01:07:33,169 INFO L125 PetriNetUnfolderBase]: For 245762/245964 co-relation queries the response was YES. [2023-08-27 01:07:33,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238942 conditions, 67508 events. 48050/67508 cut-off events. For 245762/245964 co-relation queries the response was YES. Maximal size of possible extension queue 6039. Compared 514389 event pairs, 16105 based on Foata normal form. 201/35895 useless extension candidates. Maximal degree in co-relation 238908. Up to 46506 conditions per place. [2023-08-27 01:07:33,580 INFO L140 encePairwiseOnDemand]: 344/357 looper letters, 138 selfloop transitions, 40 changer transitions 0/182 dead transitions. [2023-08-27 01:07:33,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 182 transitions, 1952 flow [2023-08-27 01:07:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 01:07:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 01:07:33,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1409 transitions. [2023-08-27 01:07:33,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35879806468041764 [2023-08-27 01:07:33,584 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1409 transitions. [2023-08-27 01:07:33,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1409 transitions. [2023-08-27 01:07:33,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:07:33,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1409 transitions. [2023-08-27 01:07:33,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 128.0909090909091) internal successors, (1409), 11 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:33,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 357.0) internal successors, (4284), 12 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:33,591 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 357.0) internal successors, (4284), 12 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:33,591 INFO L175 Difference]: Start difference. First operand has 109 places, 131 transitions, 1282 flow. Second operand 11 states and 1409 transitions. [2023-08-27 01:07:33,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 182 transitions, 1952 flow [2023-08-27 01:07:34,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 182 transitions, 1898 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 01:07:34,208 INFO L231 Difference]: Finished difference. Result has 119 places, 142 transitions, 1459 flow [2023-08-27 01:07:34,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1459, PETRI_PLACES=119, PETRI_TRANSITIONS=142} [2023-08-27 01:07:34,209 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 61 predicate places. [2023-08-27 01:07:34,209 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 142 transitions, 1459 flow [2023-08-27 01:07:34,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 121.2) internal successors, (2424), 20 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:34,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:07:34,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:07:34,214 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 01:07:34,410 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,SelfDestructingSolverStorable16 [2023-08-27 01:07:34,410 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:07:34,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:07:34,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1672014501, now seen corresponding path program 1 times [2023-08-27 01:07:34,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:07:34,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144852118] [2023-08-27 01:07:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:34,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:07:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:34,593 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 01:07:34,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:07:34,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144852118] [2023-08-27 01:07:34,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144852118] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:07:34,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503554908] [2023-08-27 01:07:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:34,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:34,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:07:34,595 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 01:07:34,601 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 01:07:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:34,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 01:07:34,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:07:34,760 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 01:07:34,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:07:34,779 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 01:07:34,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:07:34,803 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 01:07:34,811 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 01:07:34,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:07:34,847 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_603 (Array Int Int)) (v_ArrVal_602 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_602) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_603) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2023-08-27 01:07:34,854 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:07:34,854 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 01:07:34,859 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:07:34,860 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 63 treesize of output 59 [2023-08-27 01:07:34,863 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 48 treesize of output 44 [2023-08-27 01:07:34,867 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 22 treesize of output 20 [2023-08-27 01:07:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 01:07:34,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503554908] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:07:34,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:07:34,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-27 01:07:34,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744490567] [2023-08-27 01:07:34,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:07:34,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 01:07:34,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:07:34,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 01:07:34,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=4, NotChecked=24, Total=210 [2023-08-27 01:07:34,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 357 [2023-08-27 01:07:34,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 142 transitions, 1459 flow. Second operand has 15 states, 15 states have (on average 118.4) internal successors, (1776), 15 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:34,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:07:34,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 357 [2023-08-27 01:07:34,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:07:41,491 INFO L124 PetriNetUnfolderBase]: 47040/67607 cut-off events. [2023-08-27 01:07:41,492 INFO L125 PetriNetUnfolderBase]: For 294078/295083 co-relation queries the response was YES. [2023-08-27 01:07:41,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240848 conditions, 67607 events. 47040/67607 cut-off events. For 294078/295083 co-relation queries the response was YES. Maximal size of possible extension queue 5791. Compared 536169 event pairs, 14564 based on Foata normal form. 1004/38426 useless extension candidates. Maximal degree in co-relation 240810. Up to 40750 conditions per place. [2023-08-27 01:07:41,893 INFO L140 encePairwiseOnDemand]: 345/357 looper letters, 173 selfloop transitions, 60 changer transitions 0/241 dead transitions. [2023-08-27 01:07:41,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 241 transitions, 2997 flow [2023-08-27 01:07:41,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:07:41,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:07:41,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1045 transitions. [2023-08-27 01:07:41,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36589635854341734 [2023-08-27 01:07:41,895 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1045 transitions. [2023-08-27 01:07:41,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1045 transitions. [2023-08-27 01:07:41,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:07:41,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1045 transitions. [2023-08-27 01:07:41,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.625) internal successors, (1045), 8 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 01:07:41,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:41,898 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 357.0) internal successors, (3213), 9 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:41,898 INFO L175 Difference]: Start difference. First operand has 119 places, 142 transitions, 1459 flow. Second operand 8 states and 1045 transitions. [2023-08-27 01:07:41,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 241 transitions, 2997 flow [2023-08-27 01:07:42,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 241 transitions, 2948 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 01:07:42,261 INFO L231 Difference]: Finished difference. Result has 122 places, 158 transitions, 1734 flow [2023-08-27 01:07:42,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=1422, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1734, PETRI_PLACES=122, PETRI_TRANSITIONS=158} [2023-08-27 01:07:42,261 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 64 predicate places. [2023-08-27 01:07:42,261 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 158 transitions, 1734 flow [2023-08-27 01:07:42,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 118.4) internal successors, (1776), 15 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:42,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:07:42,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:07:42,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-27 01:07:42,466 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,SelfDestructingSolverStorable17 [2023-08-27 01:07:42,466 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:07:42,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:07:42,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1672014499, now seen corresponding path program 1 times [2023-08-27 01:07:42,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:07:42,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999549828] [2023-08-27 01:07:42,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:42,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:07:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:42,494 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 01:07:42,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:07:42,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999549828] [2023-08-27 01:07:42,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999549828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:07:42,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:07:42,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:07:42,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641287613] [2023-08-27 01:07:42,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:07:42,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:07:42,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:07:42,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:07:42,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:07:42,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 357 [2023-08-27 01:07:42,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 158 transitions, 1734 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:42,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:07:42,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 357 [2023-08-27 01:07:42,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:07:50,001 INFO L124 PetriNetUnfolderBase]: 62805/87494 cut-off events. [2023-08-27 01:07:50,001 INFO L125 PetriNetUnfolderBase]: For 371327/372814 co-relation queries the response was YES. [2023-08-27 01:07:50,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317463 conditions, 87494 events. 62805/87494 cut-off events. For 371327/372814 co-relation queries the response was YES. Maximal size of possible extension queue 7159. Compared 660901 event pairs, 9977 based on Foata normal form. 1486/55150 useless extension candidates. Maximal degree in co-relation 317424. Up to 74405 conditions per place. [2023-08-27 01:07:50,773 INFO L140 encePairwiseOnDemand]: 346/357 looper letters, 196 selfloop transitions, 9 changer transitions 0/216 dead transitions. [2023-08-27 01:07:50,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 216 transitions, 2731 flow [2023-08-27 01:07:50,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:07:50,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:07:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-27 01:07:50,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780578898225957 [2023-08-27 01:07:50,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-27 01:07:50,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-27 01:07:50,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:07:50,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-27 01:07:50,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:50,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:50,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:50,777 INFO L175 Difference]: Start difference. First operand has 122 places, 158 transitions, 1734 flow. Second operand 3 states and 512 transitions. [2023-08-27 01:07:50,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 216 transitions, 2731 flow [2023-08-27 01:07:51,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 216 transitions, 2712 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 01:07:51,556 INFO L231 Difference]: Finished difference. Result has 122 places, 163 transitions, 1780 flow [2023-08-27 01:07:51,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=1707, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1780, PETRI_PLACES=122, PETRI_TRANSITIONS=163} [2023-08-27 01:07:51,557 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 64 predicate places. [2023-08-27 01:07:51,557 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 163 transitions, 1780 flow [2023-08-27 01:07:51,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:51,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:07:51,557 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-27 01:07:51,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 01:07:51,557 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:07:51,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:07:51,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1859163732, now seen corresponding path program 1 times [2023-08-27 01:07:51,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:07:51,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085257487] [2023-08-27 01:07:51,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:51,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:07:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:51,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:07:51,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085257487] [2023-08-27 01:07:51,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085257487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:07:51,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776263821] [2023-08-27 01:07:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:51,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:51,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:07:51,764 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 01:07:51,765 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 01:07:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:51,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 01:07:51,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:07:51,934 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 13 treesize of output 9 [2023-08-27 01:07:51,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:07:51,952 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 01:07:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:51,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:07:52,050 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:07:52,050 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 01:07:52,056 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:07:52,056 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 37 treesize of output 31 [2023-08-27 01:07:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:52,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776263821] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:07:52,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:07:52,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 01:07:52,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596412992] [2023-08-27 01:07:52,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:07:52,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 01:07:52,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:07:52,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 01:07:52,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=315, Unknown=6, NotChecked=0, Total=380 [2023-08-27 01:07:52,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 357 [2023-08-27 01:07:52,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 163 transitions, 1780 flow. Second operand has 20 states, 20 states have (on average 121.2) internal successors, (2424), 20 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:52,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:07:52,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 357 [2023-08-27 01:07:52,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:00,427 INFO L124 PetriNetUnfolderBase]: 62465/87242 cut-off events. [2023-08-27 01:08:00,427 INFO L125 PetriNetUnfolderBase]: For 409232/409844 co-relation queries the response was YES. [2023-08-27 01:08:00,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350540 conditions, 87242 events. 62465/87242 cut-off events. For 409232/409844 co-relation queries the response was YES. Maximal size of possible extension queue 7245. Compared 663516 event pairs, 18457 based on Foata normal form. 613/58881 useless extension candidates. Maximal degree in co-relation 350499. Up to 60439 conditions per place. [2023-08-27 01:08:01,021 INFO L140 encePairwiseOnDemand]: 344/357 looper letters, 197 selfloop transitions, 49 changer transitions 0/250 dead transitions. [2023-08-27 01:08:01,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 250 transitions, 2857 flow [2023-08-27 01:08:01,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 01:08:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 01:08:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1550 transitions. [2023-08-27 01:08:01,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3618113912231559 [2023-08-27 01:08:01,024 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1550 transitions. [2023-08-27 01:08:01,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1550 transitions. [2023-08-27 01:08:01,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:01,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1550 transitions. [2023-08-27 01:08:01,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.16666666666666) internal successors, (1550), 12 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:01,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 357.0) internal successors, (4641), 13 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:01,029 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 357.0) internal successors, (4641), 13 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:01,029 INFO L175 Difference]: Start difference. First operand has 122 places, 163 transitions, 1780 flow. Second operand 12 states and 1550 transitions. [2023-08-27 01:08:01,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 250 transitions, 2857 flow [2023-08-27 01:08:01,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 250 transitions, 2832 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:08:01,860 INFO L231 Difference]: Finished difference. Result has 132 places, 167 transitions, 1941 flow [2023-08-27 01:08:01,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1941, PETRI_PLACES=132, PETRI_TRANSITIONS=167} [2023-08-27 01:08:01,861 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 74 predicate places. [2023-08-27 01:08:01,861 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 167 transitions, 1941 flow [2023-08-27 01:08:01,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 121.2) internal successors, (2424), 20 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:01,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:01,861 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-27 01:08:01,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 01:08:02,062 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,SelfDestructingSolverStorable19 [2023-08-27 01:08:02,062 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:08:02,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:02,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1859163737, now seen corresponding path program 2 times [2023-08-27 01:08:02,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:02,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668541281] [2023-08-27 01:08:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:02,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:08:02,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:02,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668541281] [2023-08-27 01:08:02,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668541281] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:08:02,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708553770] [2023-08-27 01:08:02,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:08:02,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:02,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:08:02,146 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 01:08:02,149 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 01:08:02,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:08:02,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:08:02,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:08:02,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:02,356 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:02,356 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 109 treesize of output 102 [2023-08-27 01:08:02,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:08:02,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:08:02,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708553770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:08:02,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:08:02,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 01:08:02,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306530867] [2023-08-27 01:08:02,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:08:02,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:08:02,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:02,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:08:02,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 01:08:02,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 357 [2023-08-27 01:08:02,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 167 transitions, 1941 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:02,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:02,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 357 [2023-08-27 01:08:02,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:09,059 INFO L124 PetriNetUnfolderBase]: 52889/74032 cut-off events. [2023-08-27 01:08:09,059 INFO L125 PetriNetUnfolderBase]: For 405673/406611 co-relation queries the response was YES. [2023-08-27 01:08:09,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293439 conditions, 74032 events. 52889/74032 cut-off events. For 405673/406611 co-relation queries the response was YES. Maximal size of possible extension queue 6177. Compared 552541 event pairs, 26085 based on Foata normal form. 938/52121 useless extension candidates. Maximal degree in co-relation 293397. Up to 73675 conditions per place. [2023-08-27 01:08:09,589 INFO L140 encePairwiseOnDemand]: 355/357 looper letters, 150 selfloop transitions, 1 changer transitions 0/162 dead transitions. [2023-08-27 01:08:09,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 162 transitions, 2147 flow [2023-08-27 01:08:09,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:08:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:08:09,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2023-08-27 01:08:09,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44911297852474324 [2023-08-27 01:08:09,590 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2023-08-27 01:08:09,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2023-08-27 01:08:09,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:09,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2023-08-27 01:08:09,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:09,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:09,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:09,592 INFO L175 Difference]: Start difference. First operand has 132 places, 167 transitions, 1941 flow. Second operand 3 states and 481 transitions. [2023-08-27 01:08:09,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 162 transitions, 2147 flow [2023-08-27 01:08:10,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 162 transitions, 2073 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-27 01:08:10,243 INFO L231 Difference]: Finished difference. Result has 126 places, 162 transitions, 1773 flow [2023-08-27 01:08:10,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1773, PETRI_PLACES=126, PETRI_TRANSITIONS=162} [2023-08-27 01:08:10,243 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 68 predicate places. [2023-08-27 01:08:10,243 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 162 transitions, 1773 flow [2023-08-27 01:08:10,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:10,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:10,244 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-27 01:08:10,248 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 01:08:10,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:10,444 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:08:10,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:10,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1859163736, now seen corresponding path program 1 times [2023-08-27 01:08:10,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:10,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352191295] [2023-08-27 01:08:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:10,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:08:10,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:10,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352191295] [2023-08-27 01:08:10,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352191295] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:08:10,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:08:10,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:08:10,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281713760] [2023-08-27 01:08:10,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:08:10,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:08:10,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:10,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:08:10,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:08:10,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 357 [2023-08-27 01:08:10,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 162 transitions, 1773 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:10,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:10,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 357 [2023-08-27 01:08:10,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:16,113 INFO L124 PetriNetUnfolderBase]: 44644/62208 cut-off events. [2023-08-27 01:08:16,114 INFO L125 PetriNetUnfolderBase]: For 331592/332522 co-relation queries the response was YES. [2023-08-27 01:08:16,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240285 conditions, 62208 events. 44644/62208 cut-off events. For 331592/332522 co-relation queries the response was YES. Maximal size of possible extension queue 4550. Compared 447612 event pairs, 21605 based on Foata normal form. 2690/45909 useless extension candidates. Maximal degree in co-relation 240243. Up to 61910 conditions per place. [2023-08-27 01:08:16,703 INFO L140 encePairwiseOnDemand]: 355/357 looper letters, 139 selfloop transitions, 1 changer transitions 0/151 dead transitions. [2023-08-27 01:08:16,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 151 transitions, 1866 flow [2023-08-27 01:08:16,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:08:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:08:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-27 01:08:16,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481792717086835 [2023-08-27 01:08:16,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-27 01:08:16,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-27 01:08:16,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:16,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-27 01:08:16,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:16,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:16,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:16,706 INFO L175 Difference]: Start difference. First operand has 126 places, 162 transitions, 1773 flow. Second operand 3 states and 480 transitions. [2023-08-27 01:08:16,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 151 transitions, 1866 flow [2023-08-27 01:08:17,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 151 transitions, 1827 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-27 01:08:17,258 INFO L231 Difference]: Finished difference. Result has 121 places, 151 transitions, 1549 flow [2023-08-27 01:08:17,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1549, PETRI_PLACES=121, PETRI_TRANSITIONS=151} [2023-08-27 01:08:17,259 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 63 predicate places. [2023-08-27 01:08:17,259 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 151 transitions, 1549 flow [2023-08-27 01:08:17,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:17,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:17,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:08:17,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 01:08:17,259 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:08:17,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:17,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1015392187, now seen corresponding path program 1 times [2023-08-27 01:08:17,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:17,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048474234] [2023-08-27 01:08:17,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:17,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:17,325 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 01:08:17,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:17,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048474234] [2023-08-27 01:08:17,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048474234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:08:17,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:08:17,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 01:08:17,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102060508] [2023-08-27 01:08:17,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:08:17,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 01:08:17,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:17,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 01:08:17,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:08:17,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 357 [2023-08-27 01:08:17,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 151 transitions, 1549 flow. Second operand has 5 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:17,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:17,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 357 [2023-08-27 01:08:17,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:22,069 INFO L124 PetriNetUnfolderBase]: 37530/53554 cut-off events. [2023-08-27 01:08:22,069 INFO L125 PetriNetUnfolderBase]: For 259410/259666 co-relation queries the response was YES. [2023-08-27 01:08:22,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217974 conditions, 53554 events. 37530/53554 cut-off events. For 259410/259666 co-relation queries the response was YES. Maximal size of possible extension queue 3158. Compared 374580 event pairs, 20524 based on Foata normal form. 256/40648 useless extension candidates. Maximal degree in co-relation 217933. Up to 53382 conditions per place. [2023-08-27 01:08:22,415 INFO L140 encePairwiseOnDemand]: 349/357 looper letters, 155 selfloop transitions, 5 changer transitions 0/170 dead transitions. [2023-08-27 01:08:22,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 170 transitions, 1930 flow [2023-08-27 01:08:22,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:08:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:08:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 677 transitions. [2023-08-27 01:08:22,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3792717086834734 [2023-08-27 01:08:22,416 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 677 transitions. [2023-08-27 01:08:22,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 677 transitions. [2023-08-27 01:08:22,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:22,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 677 transitions. [2023-08-27 01:08:22,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:22,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 357.0) internal successors, (2142), 6 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:22,418 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 357.0) internal successors, (2142), 6 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:22,418 INFO L175 Difference]: Start difference. First operand has 121 places, 151 transitions, 1549 flow. Second operand 5 states and 677 transitions. [2023-08-27 01:08:22,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 170 transitions, 1930 flow [2023-08-27 01:08:22,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 170 transitions, 1929 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:08:22,874 INFO L231 Difference]: Finished difference. Result has 126 places, 153 transitions, 1577 flow [2023-08-27 01:08:22,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1577, PETRI_PLACES=126, PETRI_TRANSITIONS=153} [2023-08-27 01:08:22,874 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 68 predicate places. [2023-08-27 01:08:22,875 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 153 transitions, 1577 flow [2023-08-27 01:08:22,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:22,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:22,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:08:22,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 01:08:22,875 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:08:22,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:22,875 INFO L85 PathProgramCache]: Analyzing trace with hash -483484268, now seen corresponding path program 1 times [2023-08-27 01:08:22,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:22,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132389534] [2023-08-27 01:08:22,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:22,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:23,033 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 01:08:23,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:23,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132389534] [2023-08-27 01:08:23,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132389534] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:08:23,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707301074] [2023-08-27 01:08:23,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:23,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:23,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:08:23,034 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 01:08:23,036 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 01:08:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:23,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 01:08:23,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:23,199 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 01:08:23,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:23,226 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 01:08:23,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:23,273 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 01:08:23,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:23,299 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 01:08:23,314 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 01:08:23,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:08:23,329 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_795 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_795) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 4294967296)) is different from false [2023-08-27 01:08:23,416 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:23,416 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 28 treesize of output 29 [2023-08-27 01:08:23,422 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:23,422 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 245 treesize of output 237 [2023-08-27 01:08:23,426 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 108 treesize of output 100 [2023-08-27 01:08:23,430 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 49 treesize of output 47 [2023-08-27 01:08:23,434 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 50 treesize of output 46 [2023-08-27 01:08:23,501 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 01:08:23,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707301074] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:08:23,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:08:23,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 01:08:23,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615690873] [2023-08-27 01:08:23,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:08:23,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 01:08:23,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:23,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 01:08:23,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=272, Unknown=5, NotChecked=34, Total=380 [2023-08-27 01:08:23,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 357 [2023-08-27 01:08:23,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 153 transitions, 1577 flow. Second operand has 20 states, 20 states have (on average 115.35) internal successors, (2307), 20 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:23,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:23,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 357 [2023-08-27 01:08:23,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:28,703 INFO L124 PetriNetUnfolderBase]: 39141/53919 cut-off events. [2023-08-27 01:08:28,703 INFO L125 PetriNetUnfolderBase]: For 253768/253898 co-relation queries the response was YES. [2023-08-27 01:08:28,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224348 conditions, 53919 events. 39141/53919 cut-off events. For 253768/253898 co-relation queries the response was YES. Maximal size of possible extension queue 3872. Compared 369991 event pairs, 12760 based on Foata normal form. 983/38944 useless extension candidates. Maximal degree in co-relation 224304. Up to 32257 conditions per place. [2023-08-27 01:08:29,080 INFO L140 encePairwiseOnDemand]: 348/357 looper letters, 204 selfloop transitions, 31 changer transitions 0/240 dead transitions. [2023-08-27 01:08:29,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 240 transitions, 2536 flow [2023-08-27 01:08:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:08:29,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:08:29,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 905 transitions. [2023-08-27 01:08:29,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36214485794317725 [2023-08-27 01:08:29,081 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 905 transitions. [2023-08-27 01:08:29,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 905 transitions. [2023-08-27 01:08:29,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:29,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 905 transitions. [2023-08-27 01:08:29,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.28571428571428) internal successors, (905), 7 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:29,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:29,084 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:29,084 INFO L175 Difference]: Start difference. First operand has 126 places, 153 transitions, 1577 flow. Second operand 7 states and 905 transitions. [2023-08-27 01:08:29,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 240 transitions, 2536 flow [2023-08-27 01:08:29,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 240 transitions, 2531 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:08:29,951 INFO L231 Difference]: Finished difference. Result has 132 places, 154 transitions, 1697 flow [2023-08-27 01:08:29,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1697, PETRI_PLACES=132, PETRI_TRANSITIONS=154} [2023-08-27 01:08:29,952 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 74 predicate places. [2023-08-27 01:08:29,952 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 154 transitions, 1697 flow [2023-08-27 01:08:29,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 115.35) internal successors, (2307), 20 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:29,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:29,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:08:29,956 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 01:08:30,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:30,153 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:08:30,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:30,153 INFO L85 PathProgramCache]: Analyzing trace with hash -483484269, now seen corresponding path program 1 times [2023-08-27 01:08:30,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:30,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65553963] [2023-08-27 01:08:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:30,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:30,341 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 01:08:30,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:30,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65553963] [2023-08-27 01:08:30,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65553963] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:08:30,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726655250] [2023-08-27 01:08:30,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:30,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:30,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:08:30,343 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 01:08:30,345 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 01:08:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:30,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 01:08:30,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:30,505 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 01:08:30,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:30,540 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 01:08:30,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:30,589 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 01:08:30,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:30,618 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 01:08:30,634 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 01:08:30,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:08:30,650 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_844 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_844) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 9223372039002259456))) is different from false [2023-08-27 01:08:30,713 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:30,714 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 01:08:30,731 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:30,731 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 2211 treesize of output 2147 [2023-08-27 01:08:30,738 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 61 treesize of output 59 [2023-08-27 01:08:30,740 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 59 treesize of output 55 [2023-08-27 01:08:30,763 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 58 treesize of output 50 [2023-08-27 01:08:30,777 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 01:08:30,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726655250] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:08:30,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:08:30,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 01:08:30,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764899741] [2023-08-27 01:08:30,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:08:30,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 01:08:30,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:30,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 01:08:30,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=269, Unknown=8, NotChecked=34, Total=380 [2023-08-27 01:08:30,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 357 [2023-08-27 01:08:30,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 154 transitions, 1697 flow. Second operand has 20 states, 20 states have (on average 115.35) internal successors, (2307), 20 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:30,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:30,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 357 [2023-08-27 01:08:30,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:35,868 INFO L124 PetriNetUnfolderBase]: 36652/50568 cut-off events. [2023-08-27 01:08:35,868 INFO L125 PetriNetUnfolderBase]: For 293385/293515 co-relation queries the response was YES. [2023-08-27 01:08:36,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221276 conditions, 50568 events. 36652/50568 cut-off events. For 293385/293515 co-relation queries the response was YES. Maximal size of possible extension queue 3769. Compared 345492 event pairs, 11735 based on Foata normal form. 983/36392 useless extension candidates. Maximal degree in co-relation 221230. Up to 32257 conditions per place. [2023-08-27 01:08:36,199 INFO L140 encePairwiseOnDemand]: 348/357 looper letters, 203 selfloop transitions, 31 changer transitions 0/239 dead transitions. [2023-08-27 01:08:36,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 239 transitions, 2626 flow [2023-08-27 01:08:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:08:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:08:36,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 904 transitions. [2023-08-27 01:08:36,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36174469787915164 [2023-08-27 01:08:36,200 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 904 transitions. [2023-08-27 01:08:36,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 904 transitions. [2023-08-27 01:08:36,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:36,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 904 transitions. [2023-08-27 01:08:36,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.14285714285714) internal successors, (904), 7 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:36,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:36,203 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:36,203 INFO L175 Difference]: Start difference. First operand has 132 places, 154 transitions, 1697 flow. Second operand 7 states and 904 transitions. [2023-08-27 01:08:36,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 239 transitions, 2626 flow [2023-08-27 01:08:37,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 239 transitions, 2549 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-27 01:08:37,273 INFO L231 Difference]: Finished difference. Result has 132 places, 153 transitions, 1667 flow [2023-08-27 01:08:37,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1667, PETRI_PLACES=132, PETRI_TRANSITIONS=153} [2023-08-27 01:08:37,274 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 74 predicate places. [2023-08-27 01:08:37,274 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 153 transitions, 1667 flow [2023-08-27 01:08:37,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 115.35) internal successors, (2307), 20 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:37,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:37,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:08:37,281 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 01:08:37,476 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,SelfDestructingSolverStorable24 [2023-08-27 01:08:37,477 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:08:37,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:37,477 INFO L85 PathProgramCache]: Analyzing trace with hash -292660576, now seen corresponding path program 1 times [2023-08-27 01:08:37,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:37,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541344157] [2023-08-27 01:08:37,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:37,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:37,652 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 01:08:37,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:37,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541344157] [2023-08-27 01:08:37,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541344157] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:08:37,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685663006] [2023-08-27 01:08:37,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:37,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:37,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:08:37,653 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 01:08:37,655 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 01:08:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:37,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 01:08:37,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:37,824 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 01:08:37,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:37,844 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 01:08:37,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:37,869 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 01:08:37,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:37,890 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 01:08:37,896 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 01:08:37,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:08:37,917 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_893 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_893) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2023-08-27 01:08:38,021 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:38,021 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 28 treesize of output 29 [2023-08-27 01:08:38,027 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:38,028 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 977 treesize of output 945 [2023-08-27 01:08:38,035 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 53 treesize of output 51 [2023-08-27 01:08:38,038 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 106 treesize of output 98 [2023-08-27 01:08:38,042 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 50 treesize of output 46 [2023-08-27 01:08:38,105 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 01:08:38,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685663006] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:08:38,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:08:38,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-27 01:08:38,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694806219] [2023-08-27 01:08:38,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:08:38,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:08:38,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:38,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:08:38,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=211, Unknown=7, NotChecked=30, Total=306 [2023-08-27 01:08:38,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 357 [2023-08-27 01:08:38,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 153 transitions, 1667 flow. Second operand has 18 states, 18 states have (on average 115.38888888888889) internal successors, (2077), 18 states have internal predecessors, (2077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:38,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:38,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 357 [2023-08-27 01:08:38,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:43,590 INFO L124 PetriNetUnfolderBase]: 39473/56423 cut-off events. [2023-08-27 01:08:43,590 INFO L125 PetriNetUnfolderBase]: For 313870/313897 co-relation queries the response was YES. [2023-08-27 01:08:43,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241376 conditions, 56423 events. 39473/56423 cut-off events. For 313870/313897 co-relation queries the response was YES. Maximal size of possible extension queue 3936. Compared 414564 event pairs, 11935 based on Foata normal form. 2718/42681 useless extension candidates. Maximal degree in co-relation 241332. Up to 25576 conditions per place. [2023-08-27 01:08:43,987 INFO L140 encePairwiseOnDemand]: 344/357 looper letters, 207 selfloop transitions, 27 changer transitions 0/243 dead transitions. [2023-08-27 01:08:43,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 243 transitions, 2983 flow [2023-08-27 01:08:43,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:08:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:08:43,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 902 transitions. [2023-08-27 01:08:43,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36094437775110044 [2023-08-27 01:08:43,989 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 902 transitions. [2023-08-27 01:08:43,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 902 transitions. [2023-08-27 01:08:43,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:43,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 902 transitions. [2023-08-27 01:08:43,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.85714285714286) internal successors, (902), 7 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:43,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:43,991 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:43,991 INFO L175 Difference]: Start difference. First operand has 132 places, 153 transitions, 1667 flow. Second operand 7 states and 902 transitions. [2023-08-27 01:08:43,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 243 transitions, 2983 flow [2023-08-27 01:08:44,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 243 transitions, 2899 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-27 01:08:44,533 INFO L231 Difference]: Finished difference. Result has 135 places, 158 transitions, 1766 flow [2023-08-27 01:08:44,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=1607, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1766, PETRI_PLACES=135, PETRI_TRANSITIONS=158} [2023-08-27 01:08:44,534 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 77 predicate places. [2023-08-27 01:08:44,534 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 158 transitions, 1766 flow [2023-08-27 01:08:44,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 115.38888888888889) internal successors, (2077), 18 states have internal predecessors, (2077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:44,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:44,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:08:44,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-27 01:08:44,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 01:08:44,735 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:08:44,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:44,736 INFO L85 PathProgramCache]: Analyzing trace with hash -292660577, now seen corresponding path program 1 times [2023-08-27 01:08:44,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:44,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046788503] [2023-08-27 01:08:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:44,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:45,004 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 01:08:45,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:45,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046788503] [2023-08-27 01:08:45,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046788503] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:08:45,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426549622] [2023-08-27 01:08:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:45,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:45,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:08:45,006 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 01:08:45,008 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 01:08:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:45,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 01:08:45,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:45,174 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 01:08:45,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:45,198 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 01:08:45,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:45,221 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 01:08:45,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:45,242 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 01:08:45,249 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 01:08:45,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:08:49,368 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:49,368 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 01:08:49,375 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:49,375 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 141 treesize of output 137 [2023-08-27 01:08:49,378 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 124 treesize of output 116 [2023-08-27 01:08:49,383 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 58 treesize of output 56 [2023-08-27 01:08:49,386 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 110 [2023-08-27 01:08:49,466 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 01:08:49,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426549622] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:08:49,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:08:49,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-27 01:08:49,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156197462] [2023-08-27 01:08:49,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:08:49,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:08:49,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:49,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:08:49,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=238, Unknown=5, NotChecked=0, Total=306 [2023-08-27 01:08:49,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 357 [2023-08-27 01:08:49,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 158 transitions, 1766 flow. Second operand has 18 states, 18 states have (on average 115.38888888888889) internal successors, (2077), 18 states have internal predecessors, (2077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:49,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:49,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 357 [2023-08-27 01:08:49,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:54,793 INFO L124 PetriNetUnfolderBase]: 37354/53414 cut-off events. [2023-08-27 01:08:54,793 INFO L125 PetriNetUnfolderBase]: For 324271/324298 co-relation queries the response was YES. [2023-08-27 01:08:54,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243896 conditions, 53414 events. 37354/53414 cut-off events. For 324271/324298 co-relation queries the response was YES. Maximal size of possible extension queue 3822. Compared 391622 event pairs, 12809 based on Foata normal form. 924/38560 useless extension candidates. Maximal degree in co-relation 243851. Up to 25576 conditions per place. [2023-08-27 01:08:55,177 INFO L140 encePairwiseOnDemand]: 346/357 looper letters, 206 selfloop transitions, 27 changer transitions 0/242 dead transitions. [2023-08-27 01:08:55,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 242 transitions, 2990 flow [2023-08-27 01:08:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:08:55,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:08:55,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 899 transitions. [2023-08-27 01:08:55,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3597438975590236 [2023-08-27 01:08:55,178 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 899 transitions. [2023-08-27 01:08:55,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 899 transitions. [2023-08-27 01:08:55,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:55,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 899 transitions. [2023-08-27 01:08:55,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.42857142857142) internal successors, (899), 7 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:55,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:55,181 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:55,181 INFO L175 Difference]: Start difference. First operand has 135 places, 158 transitions, 1766 flow. Second operand 7 states and 899 transitions. [2023-08-27 01:08:55,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 242 transitions, 2990 flow [2023-08-27 01:08:55,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 242 transitions, 2975 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 01:08:55,845 INFO L231 Difference]: Finished difference. Result has 137 places, 157 transitions, 1795 flow [2023-08-27 01:08:55,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=1741, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1795, PETRI_PLACES=137, PETRI_TRANSITIONS=157} [2023-08-27 01:08:55,845 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 79 predicate places. [2023-08-27 01:08:55,846 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 157 transitions, 1795 flow [2023-08-27 01:08:55,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 115.38888888888889) internal successors, (2077), 18 states have internal predecessors, (2077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:55,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:55,846 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:08:55,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 01:08:56,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 01:08:56,048 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:08:56,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:56,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1799516724, now seen corresponding path program 1 times [2023-08-27 01:08:56,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:56,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80332242] [2023-08-27 01:08:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:56,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:08:56,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:56,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80332242] [2023-08-27 01:08:56,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80332242] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:08:56,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240599848] [2023-08-27 01:08:56,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:56,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:56,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:08:56,239 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 01:08:56,240 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 01:08:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:56,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 01:08:56,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:56,412 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 13 treesize of output 9 [2023-08-27 01:08:56,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:56,439 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 01:08:56,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:56,475 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 16 treesize of output 18 [2023-08-27 01:08:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:08:56,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:08:56,619 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:56,619 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 01:08:56,624 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:56,624 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 71 treesize of output 65 [2023-08-27 01:08:56,627 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 01:08:56,629 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 50 treesize of output 42 [2023-08-27 01:08:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:08:56,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240599848] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:08:56,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:08:56,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-08-27 01:08:56,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333591067] [2023-08-27 01:08:56,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:08:56,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 01:08:56,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:56,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 01:08:56,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=426, Unknown=13, NotChecked=0, Total=506 [2023-08-27 01:08:56,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 357 [2023-08-27 01:08:56,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 157 transitions, 1795 flow. Second operand has 23 states, 23 states have (on average 118.17391304347827) internal successors, (2718), 23 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:56,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:56,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 357 [2023-08-27 01:08:56,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:09:02,691 INFO L124 PetriNetUnfolderBase]: 37051/52557 cut-off events. [2023-08-27 01:09:02,692 INFO L125 PetriNetUnfolderBase]: For 358935/359034 co-relation queries the response was YES. [2023-08-27 01:09:02,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246741 conditions, 52557 events. 37051/52557 cut-off events. For 358935/359034 co-relation queries the response was YES. Maximal size of possible extension queue 3742. Compared 376691 event pairs, 14251 based on Foata normal form. 112/37015 useless extension candidates. Maximal degree in co-relation 246697. Up to 42692 conditions per place. [2023-08-27 01:09:03,184 INFO L140 encePairwiseOnDemand]: 347/357 looper letters, 192 selfloop transitions, 74 changer transitions 0/271 dead transitions. [2023-08-27 01:09:03,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 271 transitions, 3460 flow [2023-08-27 01:09:03,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:09:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:09:03,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1294 transitions. [2023-08-27 01:09:03,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36246498599439775 [2023-08-27 01:09:03,186 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1294 transitions. [2023-08-27 01:09:03,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1294 transitions. [2023-08-27 01:09:03,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:09:03,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1294 transitions. [2023-08-27 01:09:03,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 129.4) internal successors, (1294), 10 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:03,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 357.0) internal successors, (3927), 11 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:03,189 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 357.0) internal successors, (3927), 11 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:03,189 INFO L175 Difference]: Start difference. First operand has 137 places, 157 transitions, 1795 flow. Second operand 10 states and 1294 transitions. [2023-08-27 01:09:03,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 271 transitions, 3460 flow [2023-08-27 01:09:03,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 271 transitions, 3428 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 01:09:03,626 INFO L231 Difference]: Finished difference. Result has 145 places, 180 transitions, 2284 flow [2023-08-27 01:09:03,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=1776, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2284, PETRI_PLACES=145, PETRI_TRANSITIONS=180} [2023-08-27 01:09:03,627 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 87 predicate places. [2023-08-27 01:09:03,627 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 180 transitions, 2284 flow [2023-08-27 01:09:03,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 118.17391304347827) internal successors, (2718), 23 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:03,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:09:03,627 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:09:03,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 01:09:03,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:03,829 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:09:03,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:09:03,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1799516725, now seen corresponding path program 1 times [2023-08-27 01:09:03,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:09:03,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100747542] [2023-08-27 01:09:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:03,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:09:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:04,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:09:04,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100747542] [2023-08-27 01:09:04,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100747542] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:09:04,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429047156] [2023-08-27 01:09:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:04,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:04,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:09:04,008 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 01:09:04,010 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 01:09:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:04,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 01:09:04,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:09:04,192 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 13 treesize of output 9 [2023-08-27 01:09:04,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:04,211 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 18 treesize of output 20 [2023-08-27 01:09:04,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:04,250 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 18 treesize of output 20 [2023-08-27 01:09:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:04,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:09:04,311 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1038 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1038) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 4)) 9223372039002259456))) is different from false [2023-08-27 01:09:04,314 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1038 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1038) c_~A~0.base) (+ c_~A~0.offset 4)) 9223372039002259456))) is different from false [2023-08-27 01:09:04,320 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1038 (Array Int Int)) (v_ArrVal_1037 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1037) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1038) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-08-27 01:09:04,326 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:04,326 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 29 treesize of output 30 [2023-08-27 01:09:04,331 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:04,332 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 81 treesize of output 75 [2023-08-27 01:09:04,334 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-27 01:09:04,337 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 01:09:04,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-27 01:09:04,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429047156] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:09:04,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:09:04,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-08-27 01:09:04,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194747418] [2023-08-27 01:09:04,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:09:04,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 01:09:04,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:09:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 01:09:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=329, Unknown=3, NotChecked=114, Total=506 [2023-08-27 01:09:04,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 357 [2023-08-27 01:09:04,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 180 transitions, 2284 flow. Second operand has 23 states, 23 states have (on average 118.17391304347827) internal successors, (2718), 23 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:04,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:09:04,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 357 [2023-08-27 01:09:04,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:09:10,312 INFO L124 PetriNetUnfolderBase]: 36234/51225 cut-off events. [2023-08-27 01:09:10,313 INFO L125 PetriNetUnfolderBase]: For 372701/372795 co-relation queries the response was YES. [2023-08-27 01:09:10,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245555 conditions, 51225 events. 36234/51225 cut-off events. For 372701/372795 co-relation queries the response was YES. Maximal size of possible extension queue 3484. Compared 362168 event pairs, 13768 based on Foata normal form. 107/36196 useless extension candidates. Maximal degree in co-relation 245508. Up to 41395 conditions per place. [2023-08-27 01:09:10,686 INFO L140 encePairwiseOnDemand]: 347/357 looper letters, 236 selfloop transitions, 69 changer transitions 0/310 dead transitions. [2023-08-27 01:09:10,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 310 transitions, 4026 flow [2023-08-27 01:09:10,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 01:09:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 01:09:10,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1559 transitions. [2023-08-27 01:09:10,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36391223155929037 [2023-08-27 01:09:10,688 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1559 transitions. [2023-08-27 01:09:10,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1559 transitions. [2023-08-27 01:09:10,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:09:10,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1559 transitions. [2023-08-27 01:09:10,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.91666666666666) internal successors, (1559), 12 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:10,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 357.0) internal successors, (4641), 13 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:10,692 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 357.0) internal successors, (4641), 13 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:10,692 INFO L175 Difference]: Start difference. First operand has 145 places, 180 transitions, 2284 flow. Second operand 12 states and 1559 transitions. [2023-08-27 01:09:10,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 310 transitions, 4026 flow [2023-08-27 01:09:11,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 310 transitions, 3940 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-08-27 01:09:11,120 INFO L231 Difference]: Finished difference. Result has 151 places, 174 transitions, 2234 flow [2023-08-27 01:09:11,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=2096, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2234, PETRI_PLACES=151, PETRI_TRANSITIONS=174} [2023-08-27 01:09:11,121 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 93 predicate places. [2023-08-27 01:09:11,121 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 174 transitions, 2234 flow [2023-08-27 01:09:11,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 118.17391304347827) internal successors, (2718), 23 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:11,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:09:11,121 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 01:09:11,129 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 01:09:11,322 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,SelfDestructingSolverStorable28 [2023-08-27 01:09:11,322 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:09:11,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:09:11,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1799496544, now seen corresponding path program 2 times [2023-08-27 01:09:11,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:09:11,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544034227] [2023-08-27 01:09:11,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:11,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:09:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:11,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:09:11,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544034227] [2023-08-27 01:09:11,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544034227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:09:11,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115260470] [2023-08-27 01:09:11,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:09:11,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:11,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:09:11,431 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 01:09:11,433 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 01:09:11,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:09:11,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:09:11,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:09:11,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:09:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:11,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:09:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:11,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115260470] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:09:11,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:09:11,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 01:09:11,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970184583] [2023-08-27 01:09:11,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:09:11,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:09:11,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:09:11,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:09:11,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:09:11,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 357 [2023-08-27 01:09:11,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 174 transitions, 2234 flow. Second operand has 19 states, 19 states have (on average 127.21052631578948) internal successors, (2417), 19 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:11,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:09:11,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 357 [2023-08-27 01:09:11,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:09:18,492 INFO L124 PetriNetUnfolderBase]: 46863/65941 cut-off events. [2023-08-27 01:09:18,492 INFO L125 PetriNetUnfolderBase]: For 479414/479528 co-relation queries the response was YES. [2023-08-27 01:09:18,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318095 conditions, 65941 events. 46863/65941 cut-off events. For 479414/479528 co-relation queries the response was YES. Maximal size of possible extension queue 3663. Compared 469107 event pairs, 20809 based on Foata normal form. 1653/48614 useless extension candidates. Maximal degree in co-relation 318048. Up to 41804 conditions per place. [2023-08-27 01:09:19,016 INFO L140 encePairwiseOnDemand]: 349/357 looper letters, 361 selfloop transitions, 35 changer transitions 0/401 dead transitions. [2023-08-27 01:09:19,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 401 transitions, 5237 flow [2023-08-27 01:09:19,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:09:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:09:19,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1289 transitions. [2023-08-27 01:09:19,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40118269530034234 [2023-08-27 01:09:19,021 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1289 transitions. [2023-08-27 01:09:19,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1289 transitions. [2023-08-27 01:09:19,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:09:19,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1289 transitions. [2023-08-27 01:09:19,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.22222222222223) internal successors, (1289), 9 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:19,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 357.0) internal successors, (3570), 10 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:19,024 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 357.0) internal successors, (3570), 10 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:19,024 INFO L175 Difference]: Start difference. First operand has 151 places, 174 transitions, 2234 flow. Second operand 9 states and 1289 transitions. [2023-08-27 01:09:19,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 401 transitions, 5237 flow [2023-08-27 01:09:21,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 401 transitions, 5086 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-27 01:09:21,513 INFO L231 Difference]: Finished difference. Result has 156 places, 190 transitions, 2542 flow [2023-08-27 01:09:21,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2542, PETRI_PLACES=156, PETRI_TRANSITIONS=190} [2023-08-27 01:09:21,514 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 98 predicate places. [2023-08-27 01:09:21,514 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 190 transitions, 2542 flow [2023-08-27 01:09:21,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 127.21052631578948) internal successors, (2417), 19 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:21,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:09:21,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:09:21,519 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 01:09:21,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:21,719 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:09:21,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:09:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash -482502493, now seen corresponding path program 1 times [2023-08-27 01:09:21,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:09:21,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214559485] [2023-08-27 01:09:21,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:21,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:09:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:21,978 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 01:09:21,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:09:21,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214559485] [2023-08-27 01:09:21,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214559485] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:09:21,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618253053] [2023-08-27 01:09:21,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:21,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:21,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:09:21,980 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 01:09:22,008 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 01:09:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:22,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 01:09:22,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:09:22,183 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 01:09:22,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:22,224 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 01:09:22,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:22,271 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 01:09:22,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:22,308 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 01:09:22,344 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 01:09:22,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:09:22,544 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:22,544 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 01:09:22,552 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:22,552 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 617 treesize of output 585 [2023-08-27 01:09:22,561 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 65 treesize of output 59 [2023-08-27 01:09:22,565 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 130 treesize of output 106 [2023-08-27 01:09:22,572 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 58 treesize of output 46 [2023-08-27 01:09:22,685 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 01:09:22,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618253053] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:09:22,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:09:22,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-27 01:09:22,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462219664] [2023-08-27 01:09:22,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:09:22,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:09:22,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:09:22,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:09:22,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=278, Unknown=3, NotChecked=0, Total=342 [2023-08-27 01:09:22,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 357 [2023-08-27 01:09:22,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 190 transitions, 2542 flow. Second operand has 19 states, 19 states have (on average 101.52631578947368) internal successors, (1929), 19 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:22,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:09:22,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 357 [2023-08-27 01:09:22,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:09:31,480 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 01:09:40,722 INFO L124 PetriNetUnfolderBase]: 41794/60852 cut-off events. [2023-08-27 01:09:40,722 INFO L125 PetriNetUnfolderBase]: For 534308/534420 co-relation queries the response was YES. [2023-08-27 01:09:40,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317341 conditions, 60852 events. 41794/60852 cut-off events. For 534308/534420 co-relation queries the response was YES. Maximal size of possible extension queue 3084. Compared 438203 event pairs, 9234 based on Foata normal form. 112/46090 useless extension candidates. Maximal degree in co-relation 317290. Up to 21846 conditions per place. [2023-08-27 01:09:41,243 INFO L140 encePairwiseOnDemand]: 342/357 looper letters, 368 selfloop transitions, 47 changer transitions 0/428 dead transitions. [2023-08-27 01:09:41,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 428 transitions, 5555 flow [2023-08-27 01:09:41,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 01:09:41,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 01:09:41,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1911 transitions. [2023-08-27 01:09:41,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.314878892733564 [2023-08-27 01:09:41,245 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1911 transitions. [2023-08-27 01:09:41,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1911 transitions. [2023-08-27 01:09:41,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:09:41,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1911 transitions. [2023-08-27 01:09:41,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 112.41176470588235) internal successors, (1911), 17 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:41,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 357.0) internal successors, (6426), 18 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:41,250 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 357.0) internal successors, (6426), 18 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:41,250 INFO L175 Difference]: Start difference. First operand has 156 places, 190 transitions, 2542 flow. Second operand 17 states and 1911 transitions. [2023-08-27 01:09:41,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 428 transitions, 5555 flow [2023-08-27 01:09:42,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 428 transitions, 5518 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-27 01:09:42,188 INFO L231 Difference]: Finished difference. Result has 175 places, 225 transitions, 3059 flow [2023-08-27 01:09:42,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3059, PETRI_PLACES=175, PETRI_TRANSITIONS=225} [2023-08-27 01:09:42,189 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 117 predicate places. [2023-08-27 01:09:42,189 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 225 transitions, 3059 flow [2023-08-27 01:09:42,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 101.52631578947368) internal successors, (1929), 19 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:42,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:09:42,189 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-08-27 01:09:42,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-08-27 01:09:42,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:42,393 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:09:42,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:09:42,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1266606850, now seen corresponding path program 3 times [2023-08-27 01:09:42,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:09:42,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103974901] [2023-08-27 01:09:42,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:42,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:09:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:42,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:09:42,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103974901] [2023-08-27 01:09:42,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103974901] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:09:42,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863956536] [2023-08-27 01:09:42,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:09:42,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:42,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:09:42,590 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:09:42,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 01:09:42,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 01:09:42,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:09:42,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 01:09:42,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:09:42,808 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 15 treesize of output 11 [2023-08-27 01:09:42,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:42,846 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 20 treesize of output 22 [2023-08-27 01:09:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:42,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:09:43,116 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:43,117 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 28 treesize of output 29 [2023-08-27 01:09:43,123 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:43,123 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 47 treesize of output 39 [2023-08-27 01:09:43,126 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 15 treesize of output 9 [2023-08-27 01:09:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:43,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863956536] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:09:43,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:09:43,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-08-27 01:09:43,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174214294] [2023-08-27 01:09:43,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:09:43,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 01:09:43,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:09:43,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 01:09:43,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2023-08-27 01:09:43,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 357 [2023-08-27 01:09:43,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 225 transitions, 3059 flow. Second operand has 26 states, 26 states have (on average 111.15384615384616) internal successors, (2890), 26 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:43,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:09:43,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 357 [2023-08-27 01:09:43,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:09:53,618 INFO L124 PetriNetUnfolderBase]: 47770/67613 cut-off events. [2023-08-27 01:09:53,618 INFO L125 PetriNetUnfolderBase]: For 597686/599980 co-relation queries the response was YES. [2023-08-27 01:09:53,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382267 conditions, 67613 events. 47770/67613 cut-off events. For 597686/599980 co-relation queries the response was YES. Maximal size of possible extension queue 4329. Compared 493381 event pairs, 19102 based on Foata normal form. 935/56006 useless extension candidates. Maximal degree in co-relation 382209. Up to 32946 conditions per place. [2023-08-27 01:09:54,205 INFO L140 encePairwiseOnDemand]: 346/357 looper letters, 440 selfloop transitions, 165 changer transitions 0/612 dead transitions. [2023-08-27 01:09:54,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 612 transitions, 8651 flow [2023-08-27 01:09:54,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-27 01:09:54,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-27 01:09:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4702 transitions. [2023-08-27 01:09:54,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3292717086834734 [2023-08-27 01:09:54,209 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4702 transitions. [2023-08-27 01:09:54,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4702 transitions. [2023-08-27 01:09:54,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:09:54,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4702 transitions. [2023-08-27 01:09:54,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 117.55) internal successors, (4702), 40 states have internal predecessors, (4702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:54,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 357.0) internal successors, (14637), 41 states have internal predecessors, (14637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:54,220 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 357.0) internal successors, (14637), 41 states have internal predecessors, (14637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:54,220 INFO L175 Difference]: Start difference. First operand has 175 places, 225 transitions, 3059 flow. Second operand 40 states and 4702 transitions. [2023-08-27 01:09:54,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 612 transitions, 8651 flow [2023-08-27 01:09:55,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 612 transitions, 8545 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-08-27 01:09:55,432 INFO L231 Difference]: Finished difference. Result has 220 places, 344 transitions, 5359 flow [2023-08-27 01:09:55,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=2996, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=5359, PETRI_PLACES=220, PETRI_TRANSITIONS=344} [2023-08-27 01:09:55,433 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 162 predicate places. [2023-08-27 01:09:55,433 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 344 transitions, 5359 flow [2023-08-27 01:09:55,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 111.15384615384616) internal successors, (2890), 26 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:55,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:09:55,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:09:55,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-08-27 01:09:55,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:55,638 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:09:55,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:09:55,638 INFO L85 PathProgramCache]: Analyzing trace with hash -488130900, now seen corresponding path program 1 times [2023-08-27 01:09:55,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:09:55,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720889220] [2023-08-27 01:09:55,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:55,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:09:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:55,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:09:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720889220] [2023-08-27 01:09:55,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720889220] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:09:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651823893] [2023-08-27 01:09:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:55,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:55,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:09:55,708 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:09:55,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 01:09:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:55,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 01:09:55,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:09:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:55,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:09:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:56,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651823893] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:09:56,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:09:56,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-27 01:09:56,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039853235] [2023-08-27 01:09:56,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:09:56,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 01:09:56,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:09:56,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 01:09:56,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-08-27 01:09:56,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 357 [2023-08-27 01:09:56,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 344 transitions, 5359 flow. Second operand has 15 states, 15 states have (on average 122.73333333333333) internal successors, (1841), 15 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:56,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:09:56,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 357 [2023-08-27 01:09:56,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:10:04,370 INFO L124 PetriNetUnfolderBase]: 42865/62048 cut-off events. [2023-08-27 01:10:04,370 INFO L125 PetriNetUnfolderBase]: For 579156/579324 co-relation queries the response was YES. [2023-08-27 01:10:04,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358105 conditions, 62048 events. 42865/62048 cut-off events. For 579156/579324 co-relation queries the response was YES. Maximal size of possible extension queue 3242. Compared 440082 event pairs, 23723 based on Foata normal form. 514/53717 useless extension candidates. Maximal degree in co-relation 358035. Up to 58919 conditions per place. [2023-08-27 01:10:05,047 INFO L140 encePairwiseOnDemand]: 346/357 looper letters, 380 selfloop transitions, 17 changer transitions 0/410 dead transitions. [2023-08-27 01:10:05,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 410 transitions, 6672 flow [2023-08-27 01:10:05,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:10:05,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:10:05,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 955 transitions. [2023-08-27 01:10:05,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821528611444578 [2023-08-27 01:10:05,048 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 955 transitions. [2023-08-27 01:10:05,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 955 transitions. [2023-08-27 01:10:05,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:10:05,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 955 transitions. [2023-08-27 01:10:05,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.42857142857142) internal successors, (955), 7 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:05,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:05,051 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 357.0) internal successors, (2856), 8 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:05,051 INFO L175 Difference]: Start difference. First operand has 220 places, 344 transitions, 5359 flow. Second operand 7 states and 955 transitions. [2023-08-27 01:10:05,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 410 transitions, 6672 flow [2023-08-27 01:10:06,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 410 transitions, 6377 flow, removed 67 selfloop flow, removed 11 redundant places. [2023-08-27 01:10:06,133 INFO L231 Difference]: Finished difference. Result has 218 places, 345 transitions, 5146 flow [2023-08-27 01:10:06,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=4932, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5146, PETRI_PLACES=218, PETRI_TRANSITIONS=345} [2023-08-27 01:10:06,133 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 160 predicate places. [2023-08-27 01:10:06,133 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 345 transitions, 5146 flow [2023-08-27 01:10:06,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 122.73333333333333) internal successors, (1841), 15 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:06,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:10:06,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:10:06,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-27 01:10:06,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:10:06,334 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:10:06,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:10:06,334 INFO L85 PathProgramCache]: Analyzing trace with hash -482502494, now seen corresponding path program 1 times [2023-08-27 01:10:06,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:10:06,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405649017] [2023-08-27 01:10:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:06,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:10:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:06,703 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 01:10:06,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:10:06,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405649017] [2023-08-27 01:10:06,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405649017] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:10:06,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727541309] [2023-08-27 01:10:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:06,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:10:06,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:10:06,705 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:10:06,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 01:10:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:06,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-27 01:10:06,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:10:06,915 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 15 treesize of output 11 [2023-08-27 01:10:06,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:10:06,971 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 20 treesize of output 22 [2023-08-27 01:10:07,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:10:07,021 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 20 treesize of output 22 [2023-08-27 01:10:07,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:10:07,062 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 20 treesize of output 22 [2023-08-27 01:10:07,126 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 01:10:07,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:10:07,315 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:10:07,315 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 34 treesize of output 35 [2023-08-27 01:10:07,323 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:10:07,323 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 343 treesize of output 327 [2023-08-27 01:10:07,330 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2023-08-27 01:10:07,336 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 61 treesize of output 55 [2023-08-27 01:10:07,341 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 78 treesize of output 54 [2023-08-27 01:10:07,444 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 01:10:07,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727541309] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:10:07,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:10:07,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 01:10:07,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29547628] [2023-08-27 01:10:07,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:10:07,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 01:10:07,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:10:07,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 01:10:07,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=313, Unknown=4, NotChecked=0, Total=380 [2023-08-27 01:10:07,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 357 [2023-08-27 01:10:07,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 345 transitions, 5146 flow. Second operand has 20 states, 20 states have (on average 101.5) internal successors, (2030), 20 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:07,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:10:07,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 357 [2023-08-27 01:10:07,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:10:18,917 INFO L124 PetriNetUnfolderBase]: 41351/60241 cut-off events. [2023-08-27 01:10:18,917 INFO L125 PetriNetUnfolderBase]: For 612795/613934 co-relation queries the response was YES. [2023-08-27 01:10:19,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354375 conditions, 60241 events. 41351/60241 cut-off events. For 612795/613934 co-relation queries the response was YES. Maximal size of possible extension queue 2972. Compared 433956 event pairs, 9557 based on Foata normal form. 1135/52930 useless extension candidates. Maximal degree in co-relation 354302. Up to 23380 conditions per place. [2023-08-27 01:10:19,585 INFO L140 encePairwiseOnDemand]: 343/357 looper letters, 436 selfloop transitions, 56 changer transitions 0/510 dead transitions. [2023-08-27 01:10:19,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 510 transitions, 7706 flow [2023-08-27 01:10:19,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 01:10:19,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 01:10:19,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1798 transitions. [2023-08-27 01:10:19,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31477591036414565 [2023-08-27 01:10:19,587 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1798 transitions. [2023-08-27 01:10:19,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1798 transitions. [2023-08-27 01:10:19,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:10:19,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1798 transitions. [2023-08-27 01:10:19,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 112.375) internal successors, (1798), 16 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:19,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 357.0) internal successors, (6069), 17 states have internal predecessors, (6069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:19,746 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 357.0) internal successors, (6069), 17 states have internal predecessors, (6069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:19,746 INFO L175 Difference]: Start difference. First operand has 218 places, 345 transitions, 5146 flow. Second operand 16 states and 1798 transitions. [2023-08-27 01:10:19,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 510 transitions, 7706 flow [2023-08-27 01:10:20,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 510 transitions, 7686 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-27 01:10:20,847 INFO L231 Difference]: Finished difference. Result has 230 places, 345 transitions, 5244 flow [2023-08-27 01:10:20,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=5124, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5244, PETRI_PLACES=230, PETRI_TRANSITIONS=345} [2023-08-27 01:10:20,848 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 172 predicate places. [2023-08-27 01:10:20,848 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 345 transitions, 5244 flow [2023-08-27 01:10:20,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 101.5) internal successors, (2030), 20 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:20,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:10:20,848 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-08-27 01:10:20,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-27 01:10:21,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-08-27 01:10:21,052 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:10:21,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:10:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1266606849, now seen corresponding path program 2 times [2023-08-27 01:10:21,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:10:21,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417933140] [2023-08-27 01:10:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:21,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:10:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:10:21,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:10:21,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417933140] [2023-08-27 01:10:21,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417933140] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:10:21,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852414198] [2023-08-27 01:10:21,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:10:21,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:10:21,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:10:21,247 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:10:21,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 01:10:21,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:10:21,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:10:21,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 01:10:21,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:10:21,470 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 15 treesize of output 11 [2023-08-27 01:10:21,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:10:21,503 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 18 treesize of output 20 [2023-08-27 01:10:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:10:21,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:10:21,758 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:10:21,758 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 26 treesize of output 27 [2023-08-27 01:10:21,765 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:10:21,765 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 41 treesize of output 33 [2023-08-27 01:10:21,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-08-27 01:10:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:10:21,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852414198] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:10:21,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:10:21,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-08-27 01:10:21,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768478132] [2023-08-27 01:10:21,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:10:21,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 01:10:21,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:10:21,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 01:10:21,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2023-08-27 01:10:21,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 357 [2023-08-27 01:10:21,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 345 transitions, 5244 flow. Second operand has 26 states, 26 states have (on average 111.15384615384616) internal successors, (2890), 26 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:21,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:10:21,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 357 [2023-08-27 01:10:21,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:10:33,144 INFO L124 PetriNetUnfolderBase]: 44282/62588 cut-off events. [2023-08-27 01:10:33,144 INFO L125 PetriNetUnfolderBase]: For 666194/670516 co-relation queries the response was YES. [2023-08-27 01:10:33,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378201 conditions, 62588 events. 44282/62588 cut-off events. For 666194/670516 co-relation queries the response was YES. Maximal size of possible extension queue 4336. Compared 455488 event pairs, 17689 based on Foata normal form. 2185/58191 useless extension candidates. Maximal degree in co-relation 378128. Up to 32898 conditions per place. [2023-08-27 01:10:33,844 INFO L140 encePairwiseOnDemand]: 346/357 looper letters, 441 selfloop transitions, 152 changer transitions 0/602 dead transitions. [2023-08-27 01:10:33,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 602 transitions, 9133 flow [2023-08-27 01:10:33,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-27 01:10:33,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-27 01:10:33,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4695 transitions. [2023-08-27 01:10:33,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328781512605042 [2023-08-27 01:10:33,848 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4695 transitions. [2023-08-27 01:10:33,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4695 transitions. [2023-08-27 01:10:33,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:10:33,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4695 transitions. [2023-08-27 01:10:33,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 117.375) internal successors, (4695), 40 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:33,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 357.0) internal successors, (14637), 41 states have internal predecessors, (14637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:33,859 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 357.0) internal successors, (14637), 41 states have internal predecessors, (14637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:33,859 INFO L175 Difference]: Start difference. First operand has 230 places, 345 transitions, 5244 flow. Second operand 40 states and 4695 transitions. [2023-08-27 01:10:33,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 602 transitions, 9133 flow [2023-08-27 01:10:35,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 602 transitions, 9026 flow, removed 25 selfloop flow, removed 11 redundant places. [2023-08-27 01:10:35,315 INFO L231 Difference]: Finished difference. Result has 258 places, 336 transitions, 5302 flow [2023-08-27 01:10:35,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=4963, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=5302, PETRI_PLACES=258, PETRI_TRANSITIONS=336} [2023-08-27 01:10:35,316 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 200 predicate places. [2023-08-27 01:10:35,316 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 336 transitions, 5302 flow [2023-08-27 01:10:35,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 111.15384615384616) internal successors, (2890), 26 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:35,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:10:35,316 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 01:10:35,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-27 01:10:35,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-27 01:10:35,517 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:10:35,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:10:35,517 INFO L85 PathProgramCache]: Analyzing trace with hash -610727966, now seen corresponding path program 2 times [2023-08-27 01:10:35,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:10:35,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681348950] [2023-08-27 01:10:35,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:35,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:10:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:10:35,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:10:35,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681348950] [2023-08-27 01:10:35,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681348950] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:10:35,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957449934] [2023-08-27 01:10:35,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:10:35,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:10:35,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:10:35,770 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:10:35,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 01:10:35,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:10:35,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:10:35,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 01:10:35,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:10:35,990 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 13 treesize of output 9 [2023-08-27 01:10:36,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:10:36,017 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 18 treesize of output 20 [2023-08-27 01:10:36,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:10:36,061 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 18 treesize of output 20 [2023-08-27 01:10:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:10:36,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:10:36,174 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1362 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1362) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 8)) 9223372039002259456))) is different from false [2023-08-27 01:10:36,178 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1362 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1362) c_~A~0.base) (+ c_~A~0.offset 8)) 9223372039002259456))) is different from false [2023-08-27 01:10:36,184 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1362 (Array Int Int)) (v_ArrVal_1361 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1361) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1362) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-08-27 01:10:36,189 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:10:36,189 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 29 treesize of output 30 [2023-08-27 01:10:36,194 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:10:36,195 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 81 treesize of output 75 [2023-08-27 01:10:36,198 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 32 treesize of output 28 [2023-08-27 01:10:36,201 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 58 treesize of output 50 [2023-08-27 01:10:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-08-27 01:10:36,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957449934] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:10:36,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:10:36,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-08-27 01:10:36,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761171107] [2023-08-27 01:10:36,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:10:36,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 01:10:36,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:10:36,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 01:10:36,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=584, Unknown=3, NotChecked=150, Total=812 [2023-08-27 01:10:36,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 357 [2023-08-27 01:10:36,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 336 transitions, 5302 flow. Second operand has 29 states, 29 states have (on average 118.13793103448276) internal successors, (3426), 29 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:36,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:10:36,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 357 [2023-08-27 01:10:36,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:10:45,922 INFO L124 PetriNetUnfolderBase]: 43658/61433 cut-off events. [2023-08-27 01:10:45,922 INFO L125 PetriNetUnfolderBase]: For 691064/695370 co-relation queries the response was YES. [2023-08-27 01:10:46,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375422 conditions, 61433 events. 43658/61433 cut-off events. For 691064/695370 co-relation queries the response was YES. Maximal size of possible extension queue 3695. Compared 436770 event pairs, 16352 based on Foata normal form. 2061/57202 useless extension candidates. Maximal degree in co-relation 375348. Up to 49471 conditions per place. [2023-08-27 01:10:46,580 INFO L140 encePairwiseOnDemand]: 347/357 looper letters, 329 selfloop transitions, 148 changer transitions 0/486 dead transitions. [2023-08-27 01:10:46,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 486 transitions, 8053 flow [2023-08-27 01:10:46,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 01:10:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 01:10:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1673 transitions. [2023-08-27 01:10:46,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36048265460030166 [2023-08-27 01:10:46,583 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1673 transitions. [2023-08-27 01:10:46,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1673 transitions. [2023-08-27 01:10:46,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:10:46,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1673 transitions. [2023-08-27 01:10:46,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 128.69230769230768) internal successors, (1673), 13 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:46,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 357.0) internal successors, (4998), 14 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:46,586 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 357.0) internal successors, (4998), 14 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:46,586 INFO L175 Difference]: Start difference. First operand has 258 places, 336 transitions, 5302 flow. Second operand 13 states and 1673 transitions. [2023-08-27 01:10:46,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 486 transitions, 8053 flow [2023-08-27 01:10:47,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 486 transitions, 7841 flow, removed 10 selfloop flow, removed 35 redundant places. [2023-08-27 01:10:47,844 INFO L231 Difference]: Finished difference. Result has 237 places, 360 transitions, 5935 flow [2023-08-27 01:10:47,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=5090, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5935, PETRI_PLACES=237, PETRI_TRANSITIONS=360} [2023-08-27 01:10:47,844 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 179 predicate places. [2023-08-27 01:10:47,844 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 360 transitions, 5935 flow [2023-08-27 01:10:47,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 118.13793103448276) internal successors, (3426), 29 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:47,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:10:47,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:10:47,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-27 01:10:48,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-27 01:10:48,050 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2023-08-27 01:10:48,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:10:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2072674525, now seen corresponding path program 1 times [2023-08-27 01:10:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:10:48,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988705251] [2023-08-27 01:10:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:48,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:10:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:48,097 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 01:10:48,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:10:48,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988705251] [2023-08-27 01:10:48,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988705251] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:10:48,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818725346] [2023-08-27 01:10:48,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:48,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:10:48,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:10:48,098 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:10:48,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 01:10:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:48,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:10:48,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:10:48,292 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 01:10:48,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:10:48,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818725346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:10:48,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:10:48,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-08-27 01:10:48,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503979410] [2023-08-27 01:10:48,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:10:48,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:10:48,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:10:48,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:10:48,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:10:48,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 357 [2023-08-27 01:10:48,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 360 transitions, 5935 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:48,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:10:48,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 357 [2023-08-27 01:10:48,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand