/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-sum-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 01:27:33,137 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 01:27:33,175 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 01:27:33,185 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 01:27:33,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 01:27:33,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 01:27:33,213 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 01:27:33,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 01:27:33,213 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 01:27:33,216 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 01:27:33,216 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 01:27:33,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 01:27:33,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 01:27:33,217 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 01:27:33,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 01:27:33,218 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 01:27:33,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 01:27:33,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 01:27:33,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 01:27:33,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 01:27:33,218 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 01:27:33,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 01:27:33,219 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 01:27:33,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 01:27:33,219 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 01:27:33,219 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 01:27:33,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 01:27:33,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:27:33,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 01:27:33,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 01:27:33,221 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 01:27:33,221 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 01:27:33,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 01:27:33,221 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 01:27:33,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 01:27:33,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 01:27:33,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 01:27:33,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 01:27:33,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 01:27:33,455 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 01:27:33,457 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 01:27:33,457 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2023-08-27 01:27:34,399 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 01:27:34,555 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 01:27:34,556 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2023-08-27 01:27:34,562 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66479455b/2ea7ff63cb574d5d8c838eb7be2f3432/FLAGc5f5b440c [2023-08-27 01:27:34,573 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66479455b/2ea7ff63cb574d5d8c838eb7be2f3432 [2023-08-27 01:27:34,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 01:27:34,579 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 01:27:34,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 01:27:34,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 01:27:34,585 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 01:27:34,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:27:34" (1/1) ... [2023-08-27 01:27:34,587 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7ec4de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:27:34, skipping insertion in model container [2023-08-27 01:27:34,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:27:34" (1/1) ... [2023-08-27 01:27:34,605 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 01:27:34,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:27:34,760 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 01:27:34,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:27:34,802 INFO L206 MainTranslator]: Completed translation [2023-08-27 01:27:34,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:27:34 WrapperNode [2023-08-27 01:27:34,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 01:27:34,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 01:27:34,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 01:27:34,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 01:27:34,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:27:34" (1/1) ... [2023-08-27 01:27:34,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:27:34" (1/1) ... [2023-08-27 01:27:34,842 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 110 [2023-08-27 01:27:34,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 01:27:34,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 01:27:34,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 01:27:34,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 01:27:34,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:27:34" (1/1) ... [2023-08-27 01:27:34,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:27:34" (1/1) ... [2023-08-27 01:27:34,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:27:34" (1/1) ... [2023-08-27 01:27:34,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:27:34" (1/1) ... [2023-08-27 01:27:34,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:27:34" (1/1) ... [2023-08-27 01:27:34,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:27:34" (1/1) ... [2023-08-27 01:27:34,871 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:27:34" (1/1) ... [2023-08-27 01:27:34,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:27:34" (1/1) ... [2023-08-27 01:27:34,873 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 01:27:34,874 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 01:27:34,874 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 01:27:34,874 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 01:27:34,874 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:27:34" (1/1) ... [2023-08-27 01:27:34,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:27:34,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:34,898 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 01:27:34,912 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 01:27:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 01:27:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 01:27:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 01:27:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 01:27:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 01:27:34,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 01:27:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 01:27:34,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 01:27:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 01:27:34,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 01:27:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 01:27:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 01:27:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 01:27:34,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 01:27:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 01:27:34,929 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 01:27:34,994 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 01:27:34,996 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 01:27:35,176 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 01:27:35,181 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 01:27:35,181 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 01:27:35,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:27:35 BoogieIcfgContainer [2023-08-27 01:27:35,183 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 01:27:35,184 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 01:27:35,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 01:27:35,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 01:27:35,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:27:34" (1/3) ... [2023-08-27 01:27:35,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635dc792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:27:35, skipping insertion in model container [2023-08-27 01:27:35,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:27:34" (2/3) ... [2023-08-27 01:27:35,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635dc792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:27:35, skipping insertion in model container [2023-08-27 01:27:35,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:27:35" (3/3) ... [2023-08-27 01:27:35,188 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2023-08-27 01:27:35,199 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 01:27:35,199 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 01:27:35,199 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 01:27:35,269 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 01:27:35,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 172 transitions, 368 flow [2023-08-27 01:27:35,389 INFO L124 PetriNetUnfolderBase]: 12/169 cut-off events. [2023-08-27 01:27:35,389 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 01:27:35,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 169 events. 12/169 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 175 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2023-08-27 01:27:35,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 172 transitions, 368 flow [2023-08-27 01:27:35,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 158 transitions, 334 flow [2023-08-27 01:27:35,413 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 01:27:35,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 158 transitions, 334 flow [2023-08-27 01:27:35,425 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 158 transitions, 334 flow [2023-08-27 01:27:35,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 158 transitions, 334 flow [2023-08-27 01:27:35,466 INFO L124 PetriNetUnfolderBase]: 12/158 cut-off events. [2023-08-27 01:27:35,467 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 01:27:35,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 158 events. 12/158 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 174 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2023-08-27 01:27:35,470 INFO L119 LiptonReduction]: Number of co-enabled transitions 2958 [2023-08-27 01:27:39,692 INFO L134 LiptonReduction]: Checked pairs total: 3383 [2023-08-27 01:27:39,692 INFO L136 LiptonReduction]: Total number of compositions: 161 [2023-08-27 01:27:39,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 01:27:39,705 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;@71c6b18e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 01:27:39,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-27 01:27:39,707 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 01:27:39,707 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 01:27:39,707 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 01:27:39,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:39,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 01:27:39,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:39,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:39,711 INFO L85 PathProgramCache]: Analyzing trace with hash 20573, now seen corresponding path program 1 times [2023-08-27 01:27:39,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:39,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050124795] [2023-08-27 01:27:39,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:39,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:39,954 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 01:27:39,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:39,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050124795] [2023-08-27 01:27:39,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050124795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:27:39,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:27:39,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:27:39,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592084516] [2023-08-27 01:27:39,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:39,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:27:39,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:39,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:27:39,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:27:39,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 333 [2023-08-27 01:27:39,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:39,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:39,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 333 [2023-08-27 01:27:39,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:40,160 INFO L124 PetriNetUnfolderBase]: 1274/1651 cut-off events. [2023-08-27 01:27:40,160 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-08-27 01:27:40,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3375 conditions, 1651 events. 1274/1651 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6202 event pairs, 587 based on Foata normal form. 0/595 useless extension candidates. Maximal degree in co-relation 2845. Up to 1626 conditions per place. [2023-08-27 01:27:40,172 INFO L140 encePairwiseOnDemand]: 328/333 looper letters, 28 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-27 01:27:40,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 148 flow [2023-08-27 01:27:40,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:27:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:27:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-27 01:27:40,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2023-08-27 01:27:40,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-27 01:27:40,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-27 01:27:40,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:40,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-27 01:27:40,195 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 01:27:40,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:40,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:40,200 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 82 flow. Second operand 3 states and 480 transitions. [2023-08-27 01:27:40,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 148 flow [2023-08-27 01:27:40,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 01:27:40,208 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 91 flow [2023-08-27 01:27:40,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-27 01:27:40,211 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-08-27 01:27:40,211 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 91 flow [2023-08-27 01:27:40,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:40,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:40,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:27:40,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 01:27:40,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:40,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:40,218 INFO L85 PathProgramCache]: Analyzing trace with hash 638837, now seen corresponding path program 1 times [2023-08-27 01:27:40,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:40,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71384340] [2023-08-27 01:27:40,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:40,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:40,309 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 01:27:40,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:40,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71384340] [2023-08-27 01:27:40,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71384340] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:40,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013954715] [2023-08-27 01:27:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:40,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:40,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:40,313 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 01:27:40,340 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 01:27:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:40,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:27:40,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:27:40,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:27:40,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013954715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:27:40,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:27:40,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 01:27:40,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679841949] [2023-08-27 01:27:40,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:40,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:27:40,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:40,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:27:40,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:27:40,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 333 [2023-08-27 01:27:40,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:40,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:40,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 333 [2023-08-27 01:27:40,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:40,558 INFO L124 PetriNetUnfolderBase]: 1274/1650 cut-off events. [2023-08-27 01:27:40,558 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-27 01:27:40,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 1650 events. 1274/1650 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6248 event pairs, 587 based on Foata normal form. 0/595 useless extension candidates. Maximal degree in co-relation 3294. Up to 1622 conditions per place. [2023-08-27 01:27:40,564 INFO L140 encePairwiseOnDemand]: 329/333 looper letters, 26 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2023-08-27 01:27:40,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 147 flow [2023-08-27 01:27:40,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:27:40,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:27:40,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 627 transitions. [2023-08-27 01:27:40,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47072072072072074 [2023-08-27 01:27:40,566 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 627 transitions. [2023-08-27 01:27:40,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 627 transitions. [2023-08-27 01:27:40,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:40,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 627 transitions. [2023-08-27 01:27:40,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:40,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:40,570 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:40,570 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 91 flow. Second operand 4 states and 627 transitions. [2023-08-27 01:27:40,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 147 flow [2023-08-27 01:27:40,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 142 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 01:27:40,571 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 90 flow [2023-08-27 01:27:40,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-08-27 01:27:40,572 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2023-08-27 01:27:40,572 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 90 flow [2023-08-27 01:27:40,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:40,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:40,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:27:40,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 01:27:40,779 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 01:27:40,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:40,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:40,780 INFO L85 PathProgramCache]: Analyzing trace with hash 638838, now seen corresponding path program 1 times [2023-08-27 01:27:40,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:40,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805870588] [2023-08-27 01:27:40,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:40,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:40,813 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 01:27:40,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:40,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805870588] [2023-08-27 01:27:40,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805870588] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:40,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844883329] [2023-08-27 01:27:40,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:40,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:40,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:40,815 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 01:27:40,834 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 01:27:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:40,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:27:40,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:40,876 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 01:27:40,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:27:40,891 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 01:27:40,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844883329] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:27:40,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:27:40,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:27:40,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798234271] [2023-08-27 01:27:40,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:27:40,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:27:40,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:40,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:27:40,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:27:40,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 333 [2023-08-27 01:27:40,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 90 flow. Second operand has 7 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 01:27:40,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:40,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 333 [2023-08-27 01:27:40,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:41,014 INFO L124 PetriNetUnfolderBase]: 1277/1656 cut-off events. [2023-08-27 01:27:41,015 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-27 01:27:41,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 1656 events. 1277/1656 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6304 event pairs, 587 based on Foata normal form. 0/603 useless extension candidates. Maximal degree in co-relation 3294. Up to 1628 conditions per place. [2023-08-27 01:27:41,022 INFO L140 encePairwiseOnDemand]: 329/333 looper letters, 27 selfloop transitions, 9 changer transitions 0/39 dead transitions. [2023-08-27 01:27:41,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 192 flow [2023-08-27 01:27:41,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:27:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:27:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 933 transitions. [2023-08-27 01:27:41,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.466966966966967 [2023-08-27 01:27:41,024 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 933 transitions. [2023-08-27 01:27:41,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 933 transitions. [2023-08-27 01:27:41,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:41,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 933 transitions. [2023-08-27 01:27:41,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.5) internal successors, (933), 6 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:41,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 333.0) internal successors, (2331), 7 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:41,029 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 333.0) internal successors, (2331), 7 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:41,030 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 90 flow. Second operand 6 states and 933 transitions. [2023-08-27 01:27:41,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 192 flow [2023-08-27 01:27:41,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 183 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:27:41,031 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 148 flow [2023-08-27 01:27:41,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-27 01:27:41,032 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-08-27 01:27:41,032 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 148 flow [2023-08-27 01:27:41,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 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 01:27:41,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:41,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 01:27:41,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 01:27:41,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-27 01:27:41,242 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:41,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:41,242 INFO L85 PathProgramCache]: Analyzing trace with hash 614225373, now seen corresponding path program 1 times [2023-08-27 01:27:41,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:41,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516671918] [2023-08-27 01:27:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:41,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:41,291 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 01:27:41,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:41,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516671918] [2023-08-27 01:27:41,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516671918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:27:41,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:27:41,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:27:41,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713929334] [2023-08-27 01:27:41,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:41,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:27:41,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:41,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:27:41,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:27:41,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 333 [2023-08-27 01:27:41,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:41,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:41,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 333 [2023-08-27 01:27:41,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:41,431 INFO L124 PetriNetUnfolderBase]: 1385/1826 cut-off events. [2023-08-27 01:27:41,432 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 01:27:41,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3705 conditions, 1826 events. 1385/1826 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 7373 event pairs, 589 based on Foata normal form. 0/750 useless extension candidates. Maximal degree in co-relation 3669. Up to 1534 conditions per place. [2023-08-27 01:27:41,440 INFO L140 encePairwiseOnDemand]: 328/333 looper letters, 49 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-08-27 01:27:41,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 284 flow [2023-08-27 01:27:41,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:27:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:27:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-27 01:27:41,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4964964964964965 [2023-08-27 01:27:41,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-27 01:27:41,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-27 01:27:41,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:41,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-27 01:27:41,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:41,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:41,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:41,445 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 148 flow. Second operand 3 states and 496 transitions. [2023-08-27 01:27:41,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 284 flow [2023-08-27 01:27:41,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 263 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 01:27:41,448 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 148 flow [2023-08-27 01:27:41,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2023-08-27 01:27:41,449 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-08-27 01:27:41,449 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 148 flow [2023-08-27 01:27:41,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:41,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:41,452 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 01:27:41,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 01:27:41,453 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:41,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:41,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1852790366, now seen corresponding path program 2 times [2023-08-27 01:27:41,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:41,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919173239] [2023-08-27 01:27:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:41,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:41,547 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 01:27:41,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:41,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919173239] [2023-08-27 01:27:41,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919173239] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:41,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249659110] [2023-08-27 01:27:41,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:27:41,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:41,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:41,549 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 01:27:41,551 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 01:27:41,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:27:41,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:27:41,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:27:41,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:41,639 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 01:27:41,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:27:41,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249659110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:27:41,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:27:41,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 01:27:41,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090931191] [2023-08-27 01:27:41,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:41,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:27:41,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:41,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:27:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:27:41,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 333 [2023-08-27 01:27:41,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:41,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:41,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 333 [2023-08-27 01:27:41,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:41,751 INFO L124 PetriNetUnfolderBase]: 1167/1546 cut-off events. [2023-08-27 01:27:41,752 INFO L125 PetriNetUnfolderBase]: For 129/184 co-relation queries the response was YES. [2023-08-27 01:27:41,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3583 conditions, 1546 events. 1167/1546 cut-off events. For 129/184 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6065 event pairs, 589 based on Foata normal form. 56/662 useless extension candidates. Maximal degree in co-relation 3556. Up to 1522 conditions per place. [2023-08-27 01:27:41,759 INFO L140 encePairwiseOnDemand]: 331/333 looper letters, 36 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-27 01:27:41,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 212 flow [2023-08-27 01:27:41,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:27:41,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:27:41,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-08-27 01:27:41,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47847847847847846 [2023-08-27 01:27:41,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-08-27 01:27:41,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-08-27 01:27:41,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:41,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-08-27 01:27:41,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:41,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:41,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:41,764 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 148 flow. Second operand 3 states and 478 transitions. [2023-08-27 01:27:41,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 212 flow [2023-08-27 01:27:41,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 191 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-27 01:27:41,766 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 119 flow [2023-08-27 01:27:41,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-08-27 01:27:41,768 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2023-08-27 01:27:41,768 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 119 flow [2023-08-27 01:27:41,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:41,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:41,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 01:27:41,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 01:27:41,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:41,973 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:41,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:41,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1861118921, now seen corresponding path program 1 times [2023-08-27 01:27:41,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:41,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875269058] [2023-08-27 01:27:41,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:41,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:42,015 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 01:27:42,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:42,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875269058] [2023-08-27 01:27:42,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875269058] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65421747] [2023-08-27 01:27:42,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:42,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:42,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:42,019 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 01:27:42,021 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 01:27:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:42,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:27:42,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:27:42,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:27:42,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65421747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:27:42,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:27:42,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-27 01:27:42,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676253133] [2023-08-27 01:27:42,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:42,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 01:27:42,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:42,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 01:27:42,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:27:42,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 333 [2023-08-27 01:27:42,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:42,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:42,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 333 [2023-08-27 01:27:42,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:42,280 INFO L124 PetriNetUnfolderBase]: 1863/2510 cut-off events. [2023-08-27 01:27:42,280 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2023-08-27 01:27:42,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5487 conditions, 2510 events. 1863/2510 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10951 event pairs, 891 based on Foata normal form. 52/1229 useless extension candidates. Maximal degree in co-relation 5478. Up to 1715 conditions per place. [2023-08-27 01:27:42,290 INFO L140 encePairwiseOnDemand]: 326/333 looper letters, 66 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2023-08-27 01:27:42,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 73 transitions, 339 flow [2023-08-27 01:27:42,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:27:42,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:27:42,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 726 transitions. [2023-08-27 01:27:42,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436036036036036 [2023-08-27 01:27:42,292 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 726 transitions. [2023-08-27 01:27:42,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 726 transitions. [2023-08-27 01:27:42,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:42,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 726 transitions. [2023-08-27 01:27:42,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:42,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:42,295 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:42,295 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 119 flow. Second operand 5 states and 726 transitions. [2023-08-27 01:27:42,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 73 transitions, 339 flow [2023-08-27 01:27:42,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 73 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:27:42,297 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 151 flow [2023-08-27 01:27:42,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2023-08-27 01:27:42,297 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2023-08-27 01:27:42,297 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 151 flow [2023-08-27 01:27:42,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:42,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:42,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:42,304 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 01:27:42,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:42,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:42,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:42,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1865849010, now seen corresponding path program 1 times [2023-08-27 01:27:42,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:42,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832671828] [2023-08-27 01:27:42,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:42,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:42,534 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 01:27:42,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:42,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832671828] [2023-08-27 01:27:42,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832671828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:27:42,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:27:42,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:27:42,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940776060] [2023-08-27 01:27:42,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:42,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:27:42,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:42,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:27:42,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:27:42,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 333 [2023-08-27 01:27:42,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:42,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:42,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 333 [2023-08-27 01:27:42,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:42,698 INFO L124 PetriNetUnfolderBase]: 1763/2408 cut-off events. [2023-08-27 01:27:42,698 INFO L125 PetriNetUnfolderBase]: For 1189/1447 co-relation queries the response was YES. [2023-08-27 01:27:42,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5898 conditions, 2408 events. 1763/2408 cut-off events. For 1189/1447 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 10882 event pairs, 564 based on Foata normal form. 258/1616 useless extension candidates. Maximal degree in co-relation 5886. Up to 2012 conditions per place. [2023-08-27 01:27:42,710 INFO L140 encePairwiseOnDemand]: 328/333 looper letters, 54 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2023-08-27 01:27:42,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 327 flow [2023-08-27 01:27:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:27:42,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:27:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-08-27 01:27:42,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2023-08-27 01:27:42,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-08-27 01:27:42,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-08-27 01:27:42,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:42,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-08-27 01:27:42,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:42,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:42,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:42,715 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 151 flow. Second operand 3 states and 495 transitions. [2023-08-27 01:27:42,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 327 flow [2023-08-27 01:27:42,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:27:42,718 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 167 flow [2023-08-27 01:27:42,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-08-27 01:27:42,719 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2023-08-27 01:27:42,719 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 167 flow [2023-08-27 01:27:42,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:42,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:42,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:42,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 01:27:42,721 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:42,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:42,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1610256097, now seen corresponding path program 1 times [2023-08-27 01:27:42,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:42,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077358081] [2023-08-27 01:27:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:42,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:42,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:42,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077358081] [2023-08-27 01:27:42,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077358081] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:42,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085542549] [2023-08-27 01:27:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:42,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:42,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:42,769 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 01:27:42,771 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 01:27:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:42,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:27:42,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:42,872 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 01:27:42,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:27:42,916 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 01:27:42,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085542549] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:27:42,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:27:42,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-27 01:27:42,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721920826] [2023-08-27 01:27:42,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:27:42,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 01:27:42,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:42,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 01:27:42,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-27 01:27:42,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 333 [2023-08-27 01:27:42,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 167 flow. Second operand has 13 states, 13 states have (on average 133.53846153846155) internal successors, (1736), 13 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:42,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:42,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 333 [2023-08-27 01:27:42,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:43,254 INFO L124 PetriNetUnfolderBase]: 2825/3820 cut-off events. [2023-08-27 01:27:43,255 INFO L125 PetriNetUnfolderBase]: For 2180/2358 co-relation queries the response was YES. [2023-08-27 01:27:43,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10802 conditions, 3820 events. 2825/3820 cut-off events. For 2180/2358 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 17341 event pairs, 575 based on Foata normal form. 268/2404 useless extension candidates. Maximal degree in co-relation 10790. Up to 1201 conditions per place. [2023-08-27 01:27:43,271 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 111 selfloop transitions, 17 changer transitions 0/130 dead transitions. [2023-08-27 01:27:43,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 130 transitions, 705 flow [2023-08-27 01:27:43,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:27:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:27:43,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1305 transitions. [2023-08-27 01:27:43,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43543543543543545 [2023-08-27 01:27:43,274 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1305 transitions. [2023-08-27 01:27:43,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1305 transitions. [2023-08-27 01:27:43,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:43,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1305 transitions. [2023-08-27 01:27:43,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.0) internal successors, (1305), 9 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:43,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 333.0) internal successors, (3330), 10 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:43,280 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 333.0) internal successors, (3330), 10 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:43,280 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 167 flow. Second operand 9 states and 1305 transitions. [2023-08-27 01:27:43,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 130 transitions, 705 flow [2023-08-27 01:27:43,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 130 transitions, 680 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 01:27:43,283 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 273 flow [2023-08-27 01:27:43,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=273, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-08-27 01:27:43,284 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-08-27 01:27:43,284 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 273 flow [2023-08-27 01:27:43,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 133.53846153846155) internal successors, (1736), 13 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:43,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:43,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:43,295 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 01:27:43,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:43,489 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:43,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:43,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2006745095, now seen corresponding path program 1 times [2023-08-27 01:27:43,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:43,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207833350] [2023-08-27 01:27:43,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:43,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:27:43,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:43,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207833350] [2023-08-27 01:27:43,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207833350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:27:43,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:27:43,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:27:43,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671250038] [2023-08-27 01:27:43,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:43,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:27:43,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:43,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:27:43,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:27:43,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 333 [2023-08-27 01:27:43,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:43,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:43,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 333 [2023-08-27 01:27:43,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:43,704 INFO L124 PetriNetUnfolderBase]: 2418/3255 cut-off events. [2023-08-27 01:27:43,704 INFO L125 PetriNetUnfolderBase]: For 7450/8023 co-relation queries the response was YES. [2023-08-27 01:27:43,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10473 conditions, 3255 events. 2418/3255 cut-off events. For 7450/8023 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 14732 event pairs, 459 based on Foata normal form. 548/2846 useless extension candidates. Maximal degree in co-relation 10455. Up to 1970 conditions per place. [2023-08-27 01:27:43,716 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 65 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2023-08-27 01:27:43,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 543 flow [2023-08-27 01:27:43,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:27:43,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:27:43,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-08-27 01:27:43,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914914914914915 [2023-08-27 01:27:43,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-08-27 01:27:43,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-08-27 01:27:43,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:43,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-08-27 01:27:43,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:43,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:43,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:43,721 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 273 flow. Second operand 3 states and 491 transitions. [2023-08-27 01:27:43,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 543 flow [2023-08-27 01:27:43,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 72 transitions, 520 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 01:27:43,726 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 259 flow [2023-08-27 01:27:43,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2023-08-27 01:27:43,726 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2023-08-27 01:27:43,726 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 259 flow [2023-08-27 01:27:43,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:43,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:43,727 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:43,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 01:27:43,727 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:43,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:43,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1871524152, now seen corresponding path program 1 times [2023-08-27 01:27:43,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:43,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113001962] [2023-08-27 01:27:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:43,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:43,756 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 01:27:43,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:43,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113001962] [2023-08-27 01:27:43,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113001962] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:43,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536719103] [2023-08-27 01:27:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:43,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:43,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:43,757 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 01:27:43,759 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 01:27:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:43,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:27:43,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:43,855 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 01:27:43,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:27:43,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536719103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:27:43,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:27:43,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 01:27:43,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479003561] [2023-08-27 01:27:43,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:43,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:27:43,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:43,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:27:43,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:27:43,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 333 [2023-08-27 01:27:43,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 259 flow. Second operand has 4 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:43,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:43,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 333 [2023-08-27 01:27:43,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:44,044 INFO L124 PetriNetUnfolderBase]: 2103/2863 cut-off events. [2023-08-27 01:27:44,044 INFO L125 PetriNetUnfolderBase]: For 4306/4650 co-relation queries the response was YES. [2023-08-27 01:27:44,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9305 conditions, 2863 events. 2103/2863 cut-off events. For 4306/4650 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 12874 event pairs, 534 based on Foata normal form. 432/2571 useless extension candidates. Maximal degree in co-relation 9287. Up to 1487 conditions per place. [2023-08-27 01:27:44,058 INFO L140 encePairwiseOnDemand]: 329/333 looper letters, 63 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2023-08-27 01:27:44,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 76 transitions, 495 flow [2023-08-27 01:27:44,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:27:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:27:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 653 transitions. [2023-08-27 01:27:44,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49024024024024027 [2023-08-27 01:27:44,060 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 653 transitions. [2023-08-27 01:27:44,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 653 transitions. [2023-08-27 01:27:44,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:44,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 653 transitions. [2023-08-27 01:27:44,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:44,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:44,064 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:44,064 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 259 flow. Second operand 4 states and 653 transitions. [2023-08-27 01:27:44,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 76 transitions, 495 flow [2023-08-27 01:27:44,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 471 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-27 01:27:44,073 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 249 flow [2023-08-27 01:27:44,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2023-08-27 01:27:44,074 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-08-27 01:27:44,074 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 249 flow [2023-08-27 01:27:44,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:44,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:44,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:44,081 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 01:27:44,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:44,279 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:44,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:44,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2006745097, now seen corresponding path program 1 times [2023-08-27 01:27:44,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:44,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118362880] [2023-08-27 01:27:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:44,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:44,306 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 01:27:44,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:44,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118362880] [2023-08-27 01:27:44,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118362880] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:44,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125574171] [2023-08-27 01:27:44,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:44,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:44,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:44,308 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 01:27:44,310 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 01:27:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:44,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:27:44,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:44,378 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 01:27:44,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:27:44,388 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 01:27:44,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125574171] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:27:44,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:27:44,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 01:27:44,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104065621] [2023-08-27 01:27:44,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:27:44,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:27:44,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:44,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:27:44,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:27:44,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 333 [2023-08-27 01:27:44,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 249 flow. Second operand has 7 states, 7 states have (on average 151.85714285714286) internal successors, (1063), 7 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:44,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:44,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 333 [2023-08-27 01:27:44,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:44,714 INFO L124 PetriNetUnfolderBase]: 3758/4959 cut-off events. [2023-08-27 01:27:44,714 INFO L125 PetriNetUnfolderBase]: For 9800/10284 co-relation queries the response was YES. [2023-08-27 01:27:44,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16096 conditions, 4959 events. 3758/4959 cut-off events. For 9800/10284 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 22524 event pairs, 913 based on Foata normal form. 455/3774 useless extension candidates. Maximal degree in co-relation 16079. Up to 2745 conditions per place. [2023-08-27 01:27:44,737 INFO L140 encePairwiseOnDemand]: 329/333 looper letters, 121 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2023-08-27 01:27:44,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 134 transitions, 1029 flow [2023-08-27 01:27:44,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:27:44,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:27:44,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 985 transitions. [2023-08-27 01:27:44,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.492992992992993 [2023-08-27 01:27:44,739 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 985 transitions. [2023-08-27 01:27:44,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 985 transitions. [2023-08-27 01:27:44,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:44,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 985 transitions. [2023-08-27 01:27:44,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.16666666666666) internal successors, (985), 6 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:44,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 333.0) internal successors, (2331), 7 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:44,743 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 333.0) internal successors, (2331), 7 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:44,743 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 249 flow. Second operand 6 states and 985 transitions. [2023-08-27 01:27:44,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 134 transitions, 1029 flow [2023-08-27 01:27:44,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 134 transitions, 968 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:27:44,753 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 293 flow [2023-08-27 01:27:44,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-08-27 01:27:44,754 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2023-08-27 01:27:44,754 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 293 flow [2023-08-27 01:27:44,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 151.85714285714286) internal successors, (1063), 7 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:44,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:44,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:44,761 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 01:27:44,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:44,959 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:44,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:44,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2084736548, now seen corresponding path program 1 times [2023-08-27 01:27:44,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:44,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168360774] [2023-08-27 01:27:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:44,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:44,985 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 01:27:44,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:44,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168360774] [2023-08-27 01:27:44,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168360774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:27:44,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:27:44,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:27:44,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437281976] [2023-08-27 01:27:44,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:44,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:27:44,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:44,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:27:44,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 01:27:44,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 333 [2023-08-27 01:27:44,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:44,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:44,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 333 [2023-08-27 01:27:44,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:45,209 INFO L124 PetriNetUnfolderBase]: 2408/3286 cut-off events. [2023-08-27 01:27:45,209 INFO L125 PetriNetUnfolderBase]: For 8478/9014 co-relation queries the response was YES. [2023-08-27 01:27:45,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12611 conditions, 3286 events. 2408/3286 cut-off events. For 8478/9014 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 14079 event pairs, 805 based on Foata normal form. 522/3301 useless extension candidates. Maximal degree in co-relation 12591. Up to 1880 conditions per place. [2023-08-27 01:27:45,227 INFO L140 encePairwiseOnDemand]: 329/333 looper letters, 73 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2023-08-27 01:27:45,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 615 flow [2023-08-27 01:27:45,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:27:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:27:45,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 617 transitions. [2023-08-27 01:27:45,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46321321321321324 [2023-08-27 01:27:45,230 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 617 transitions. [2023-08-27 01:27:45,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 617 transitions. [2023-08-27 01:27:45,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:45,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 617 transitions. [2023-08-27 01:27:45,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:45,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:45,232 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:45,232 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 293 flow. Second operand 4 states and 617 transitions. [2023-08-27 01:27:45,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 615 flow [2023-08-27 01:27:45,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 80 transitions, 574 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-08-27 01:27:45,240 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 276 flow [2023-08-27 01:27:45,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2023-08-27 01:27:45,241 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2023-08-27 01:27:45,241 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 276 flow [2023-08-27 01:27:45,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:45,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:45,242 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 01:27:45,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 01:27:45,242 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:45,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:45,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2112294974, now seen corresponding path program 2 times [2023-08-27 01:27:45,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:45,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540487105] [2023-08-27 01:27:45,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:45,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:45,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:27:45,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:45,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540487105] [2023-08-27 01:27:45,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540487105] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:45,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637830067] [2023-08-27 01:27:45,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:27:45,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:45,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:45,296 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 01:27:45,320 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 01:27:45,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:27:45,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:27:45,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:27:45,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:45,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 01:27:45,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:27:45,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637830067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:27:45,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:27:45,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-27 01:27:45,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407081525] [2023-08-27 01:27:45,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:45,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:27:45,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:45,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:27:45,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 01:27:45,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 333 [2023-08-27 01:27:45,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:45,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:45,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 333 [2023-08-27 01:27:45,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:45,527 INFO L124 PetriNetUnfolderBase]: 1989/2679 cut-off events. [2023-08-27 01:27:45,527 INFO L125 PetriNetUnfolderBase]: For 7320/7812 co-relation queries the response was YES. [2023-08-27 01:27:45,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9165 conditions, 2679 events. 1989/2679 cut-off events. For 7320/7812 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10924 event pairs, 993 based on Foata normal form. 601/3171 useless extension candidates. Maximal degree in co-relation 9143. Up to 2648 conditions per place. [2023-08-27 01:27:45,539 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 45 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-27 01:27:45,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 348 flow [2023-08-27 01:27:45,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:27:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:27:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-08-27 01:27:45,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2023-08-27 01:27:45,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-08-27 01:27:45,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-08-27 01:27:45,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:45,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-08-27 01:27:45,541 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 01:27:45,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:45,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:45,542 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 276 flow. Second operand 3 states and 471 transitions. [2023-08-27 01:27:45,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 348 flow [2023-08-27 01:27:45,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 322 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-27 01:27:45,549 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 232 flow [2023-08-27 01:27:45,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-08-27 01:27:45,549 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-08-27 01:27:45,549 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 232 flow [2023-08-27 01:27:45,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:45,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:45,550 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:45,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 01:27:45,754 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,SelfDestructingSolverStorable12 [2023-08-27 01:27:45,754 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:45,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:45,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1293960692, now seen corresponding path program 2 times [2023-08-27 01:27:45,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:45,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642632907] [2023-08-27 01:27:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:45,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:45,798 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 01:27:45,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:45,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642632907] [2023-08-27 01:27:45,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642632907] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:45,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425263159] [2023-08-27 01:27:45,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:27:45,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:45,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:45,800 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 01:27:45,802 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 01:27:45,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:27:45,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:27:45,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:27:45,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:45,884 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 01:27:45,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:27:45,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425263159] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:27:45,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:27:45,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-27 01:27:45,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150629391] [2023-08-27 01:27:45,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:45,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:27:45,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:45,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:27:45,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:27:45,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 333 [2023-08-27 01:27:45,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:45,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:45,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 333 [2023-08-27 01:27:45,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:46,011 INFO L124 PetriNetUnfolderBase]: 1694/2294 cut-off events. [2023-08-27 01:27:46,012 INFO L125 PetriNetUnfolderBase]: For 3349/3755 co-relation queries the response was YES. [2023-08-27 01:27:46,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7326 conditions, 2294 events. 1694/2294 cut-off events. For 3349/3755 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8878 event pairs, 891 based on Foata normal form. 496/2545 useless extension candidates. Maximal degree in co-relation 7306. Up to 2284 conditions per place. [2023-08-27 01:27:46,019 INFO L140 encePairwiseOnDemand]: 331/333 looper letters, 45 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-08-27 01:27:46,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 314 flow [2023-08-27 01:27:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:27:46,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:27:46,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-08-27 01:27:46,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47647647647647645 [2023-08-27 01:27:46,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-08-27 01:27:46,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-08-27 01:27:46,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:46,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-08-27 01:27:46,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,023 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 232 flow. Second operand 3 states and 476 transitions. [2023-08-27 01:27:46,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 314 flow [2023-08-27 01:27:46,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 297 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-27 01:27:46,028 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 207 flow [2023-08-27 01:27:46,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-08-27 01:27:46,028 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2023-08-27 01:27:46,028 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 207 flow [2023-08-27 01:27:46,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:46,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:46,035 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 01:27:46,236 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,SelfDestructingSolverStorable13 [2023-08-27 01:27:46,237 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:46,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:46,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1932377421, now seen corresponding path program 1 times [2023-08-27 01:27:46,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:46,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876012379] [2023-08-27 01:27:46,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:46,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:46,406 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 01:27:46,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:46,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876012379] [2023-08-27 01:27:46,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876012379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:27:46,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:27:46,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:27:46,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678349616] [2023-08-27 01:27:46,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:46,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:27:46,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:46,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:27:46,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:27:46,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 333 [2023-08-27 01:27:46,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:46,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 333 [2023-08-27 01:27:46,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:46,553 INFO L124 PetriNetUnfolderBase]: 1952/2630 cut-off events. [2023-08-27 01:27:46,553 INFO L125 PetriNetUnfolderBase]: For 1616/2001 co-relation queries the response was YES. [2023-08-27 01:27:46,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7224 conditions, 2630 events. 1952/2630 cut-off events. For 1616/2001 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10668 event pairs, 267 based on Foata normal form. 387/2600 useless extension candidates. Maximal degree in co-relation 7207. Up to 2411 conditions per place. [2023-08-27 01:27:46,562 INFO L140 encePairwiseOnDemand]: 328/333 looper letters, 58 selfloop transitions, 5 changer transitions 1/69 dead transitions. [2023-08-27 01:27:46,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 69 transitions, 403 flow [2023-08-27 01:27:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:27:46,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:27:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-27 01:27:46,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48848848848848847 [2023-08-27 01:27:46,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-27 01:27:46,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-27 01:27:46,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:46,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-27 01:27:46,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,566 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 207 flow. Second operand 3 states and 488 transitions. [2023-08-27 01:27:46,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 69 transitions, 403 flow [2023-08-27 01:27:46,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 69 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:27:46,572 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 247 flow [2023-08-27 01:27:46,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2023-08-27 01:27:46,573 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-08-27 01:27:46,573 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 247 flow [2023-08-27 01:27:46,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:46,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:46,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 01:27:46,573 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:46,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:46,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1192416411, now seen corresponding path program 1 times [2023-08-27 01:27:46,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:46,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590797914] [2023-08-27 01:27:46,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:46,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:27:46,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:46,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590797914] [2023-08-27 01:27:46,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590797914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:27:46,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:27:46,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 01:27:46,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058937840] [2023-08-27 01:27:46,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:46,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 01:27:46,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:46,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 01:27:46,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:27:46,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 333 [2023-08-27 01:27:46,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:46,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 333 [2023-08-27 01:27:46,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:46,803 INFO L124 PetriNetUnfolderBase]: 1800/2490 cut-off events. [2023-08-27 01:27:46,803 INFO L125 PetriNetUnfolderBase]: For 2600/2993 co-relation queries the response was YES. [2023-08-27 01:27:46,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7473 conditions, 2490 events. 1800/2490 cut-off events. For 2600/2993 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10431 event pairs, 853 based on Foata normal form. 439/2834 useless extension candidates. Maximal degree in co-relation 7454. Up to 1977 conditions per place. [2023-08-27 01:27:46,812 INFO L140 encePairwiseOnDemand]: 327/333 looper letters, 83 selfloop transitions, 5 changer transitions 2/94 dead transitions. [2023-08-27 01:27:46,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 94 transitions, 554 flow [2023-08-27 01:27:46,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:27:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:27:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 690 transitions. [2023-08-27 01:27:46,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2023-08-27 01:27:46,814 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 690 transitions. [2023-08-27 01:27:46,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 690 transitions. [2023-08-27 01:27:46,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:46,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 690 transitions. [2023-08-27 01:27:46,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,817 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,817 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 247 flow. Second operand 5 states and 690 transitions. [2023-08-27 01:27:46,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 94 transitions, 554 flow [2023-08-27 01:27:46,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 94 transitions, 547 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:27:46,822 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 269 flow [2023-08-27 01:27:46,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=242, 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=5, PETRI_FLOW=269, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-27 01:27:46,823 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 22 predicate places. [2023-08-27 01:27:46,823 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 269 flow [2023-08-27 01:27:46,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:46,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:46,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 01:27:46,823 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:46,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:46,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1825748190, now seen corresponding path program 1 times [2023-08-27 01:27:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:46,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181002435] [2023-08-27 01:27:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:46,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:46,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:27:46,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:46,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181002435] [2023-08-27 01:27:46,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181002435] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:27:46,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:27:46,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 01:27:46,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463091391] [2023-08-27 01:27:46,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:46,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 01:27:46,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:46,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 01:27:46,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:27:46,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 333 [2023-08-27 01:27:46,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:46,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:46,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 333 [2023-08-27 01:27:46,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:47,057 INFO L124 PetriNetUnfolderBase]: 1788/2465 cut-off events. [2023-08-27 01:27:47,058 INFO L125 PetriNetUnfolderBase]: For 3235/3451 co-relation queries the response was YES. [2023-08-27 01:27:47,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7963 conditions, 2465 events. 1788/2465 cut-off events. For 3235/3451 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9698 event pairs, 913 based on Foata normal form. 238/2630 useless extension candidates. Maximal degree in co-relation 7941. Up to 2291 conditions per place. [2023-08-27 01:27:47,066 INFO L140 encePairwiseOnDemand]: 327/333 looper letters, 47 selfloop transitions, 2 changer transitions 26/77 dead transitions. [2023-08-27 01:27:47,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 77 transitions, 486 flow [2023-08-27 01:27:47,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:27:47,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:27:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 685 transitions. [2023-08-27 01:27:47,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114114114114114 [2023-08-27 01:27:47,068 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 685 transitions. [2023-08-27 01:27:47,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 685 transitions. [2023-08-27 01:27:47,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:47,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 685 transitions. [2023-08-27 01:27:47,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:47,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:47,071 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:47,071 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 269 flow. Second operand 5 states and 685 transitions. [2023-08-27 01:27:47,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 77 transitions, 486 flow [2023-08-27 01:27:47,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:27:47,078 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 235 flow [2023-08-27 01:27:47,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=58, 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=5, PETRI_FLOW=235, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2023-08-27 01:27:47,079 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-08-27 01:27:47,079 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 235 flow [2023-08-27 01:27:47,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:47,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:47,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:47,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 01:27:47,080 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:47,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:47,080 INFO L85 PathProgramCache]: Analyzing trace with hash -753324823, now seen corresponding path program 1 times [2023-08-27 01:27:47,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:47,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860627252] [2023-08-27 01:27:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:47,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:47,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:47,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860627252] [2023-08-27 01:27:47,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860627252] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:47,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915359260] [2023-08-27 01:27:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:47,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:47,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:47,135 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 01:27:47,137 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 01:27:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:47,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:27:47,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:47,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:27:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:47,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915359260] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:47,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 01:27:47,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-27 01:27:47,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982175653] [2023-08-27 01:27:47,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:47,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 01:27:47,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:47,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 01:27:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-27 01:27:47,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 333 [2023-08-27 01:27:47,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:47,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:47,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 333 [2023-08-27 01:27:47,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:47,386 INFO L124 PetriNetUnfolderBase]: 1664/2249 cut-off events. [2023-08-27 01:27:47,386 INFO L125 PetriNetUnfolderBase]: For 3166/3248 co-relation queries the response was YES. [2023-08-27 01:27:47,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7151 conditions, 2249 events. 1664/2249 cut-off events. For 3166/3248 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8717 event pairs, 495 based on Foata normal form. 198/2305 useless extension candidates. Maximal degree in co-relation 7127. Up to 1766 conditions per place. [2023-08-27 01:27:47,394 INFO L140 encePairwiseOnDemand]: 328/333 looper letters, 58 selfloop transitions, 8 changer transitions 0/68 dead transitions. [2023-08-27 01:27:47,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 68 transitions, 425 flow [2023-08-27 01:27:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:27:47,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:27:47,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 694 transitions. [2023-08-27 01:27:47,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4168168168168168 [2023-08-27 01:27:47,396 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 694 transitions. [2023-08-27 01:27:47,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 694 transitions. [2023-08-27 01:27:47,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:47,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 694 transitions. [2023-08-27 01:27:47,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:47,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:47,399 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:47,400 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 235 flow. Second operand 5 states and 694 transitions. [2023-08-27 01:27:47,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 68 transitions, 425 flow [2023-08-27 01:27:47,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 389 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-08-27 01:27:47,407 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 213 flow [2023-08-27 01:27:47,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2023-08-27 01:27:47,407 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2023-08-27 01:27:47,408 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 213 flow [2023-08-27 01:27:47,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:47,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:47,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:47,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 01:27:47,612 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,SelfDestructingSolverStorable17 [2023-08-27 01:27:47,612 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:47,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:47,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1816983168, now seen corresponding path program 1 times [2023-08-27 01:27:47,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:47,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036734386] [2023-08-27 01:27:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:47,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:47,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:47,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036734386] [2023-08-27 01:27:47,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036734386] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:47,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529710256] [2023-08-27 01:27:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:47,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:47,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:47,685 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 01:27:47,687 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 01:27:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:47,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:27:47,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:47,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:27:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:47,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529710256] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:47,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 01:27:47,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-08-27 01:27:47,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034285803] [2023-08-27 01:27:47,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:47,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:27:47,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:47,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:27:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-08-27 01:27:47,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:27:47,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:47,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:47,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:27:47,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:48,065 INFO L124 PetriNetUnfolderBase]: 1592/2237 cut-off events. [2023-08-27 01:27:48,066 INFO L125 PetriNetUnfolderBase]: For 2510/2666 co-relation queries the response was YES. [2023-08-27 01:27:48,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6640 conditions, 2237 events. 1592/2237 cut-off events. For 2510/2666 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9064 event pairs, 614 based on Foata normal form. 178/2345 useless extension candidates. Maximal degree in co-relation 6622. Up to 1649 conditions per place. [2023-08-27 01:27:48,071 INFO L140 encePairwiseOnDemand]: 325/333 looper letters, 92 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2023-08-27 01:27:48,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 103 transitions, 673 flow [2023-08-27 01:27:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:27:48,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:27:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 920 transitions. [2023-08-27 01:27:48,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946803946803947 [2023-08-27 01:27:48,074 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 920 transitions. [2023-08-27 01:27:48,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 920 transitions. [2023-08-27 01:27:48,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:48,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 920 transitions. [2023-08-27 01:27:48,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.42857142857142) internal successors, (920), 7 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:48,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:48,078 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:48,078 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 213 flow. Second operand 7 states and 920 transitions. [2023-08-27 01:27:48,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 103 transitions, 673 flow [2023-08-27 01:27:48,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 103 transitions, 637 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 01:27:48,081 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 240 flow [2023-08-27 01:27:48,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-08-27 01:27:48,082 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-08-27 01:27:48,082 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 240 flow [2023-08-27 01:27:48,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:48,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:48,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:48,086 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 01:27:48,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:48,286 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:48,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:48,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1319793530, now seen corresponding path program 2 times [2023-08-27 01:27:48,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:48,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005276654] [2023-08-27 01:27:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:48,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:48,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:48,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005276654] [2023-08-27 01:27:48,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005276654] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:48,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127693985] [2023-08-27 01:27:48,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:27:48,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:48,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:48,370 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 01:27:48,372 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 01:27:48,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:27:48,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:27:48,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:27:48,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:48,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:27:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:48,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127693985] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:48,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 01:27:48,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-08-27 01:27:48,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867986799] [2023-08-27 01:27:48,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:48,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:27:48,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:48,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:27:48,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-08-27 01:27:48,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:27:48,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:48,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:48,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:27:48,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:48,780 INFO L124 PetriNetUnfolderBase]: 2369/3320 cut-off events. [2023-08-27 01:27:48,780 INFO L125 PetriNetUnfolderBase]: For 4757/4957 co-relation queries the response was YES. [2023-08-27 01:27:48,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10696 conditions, 3320 events. 2369/3320 cut-off events. For 4757/4957 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14483 event pairs, 810 based on Foata normal form. 218/3432 useless extension candidates. Maximal degree in co-relation 10676. Up to 2121 conditions per place. [2023-08-27 01:27:48,793 INFO L140 encePairwiseOnDemand]: 325/333 looper letters, 106 selfloop transitions, 12 changer transitions 0/120 dead transitions. [2023-08-27 01:27:48,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 120 transitions, 796 flow [2023-08-27 01:27:48,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:27:48,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:27:48,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 916 transitions. [2023-08-27 01:27:48,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296439296439295 [2023-08-27 01:27:48,795 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 916 transitions. [2023-08-27 01:27:48,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 916 transitions. [2023-08-27 01:27:48,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:48,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 916 transitions. [2023-08-27 01:27:48,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:48,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:48,799 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:48,799 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 240 flow. Second operand 7 states and 916 transitions. [2023-08-27 01:27:48,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 120 transitions, 796 flow [2023-08-27 01:27:48,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 120 transitions, 763 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 01:27:48,809 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 297 flow [2023-08-27 01:27:48,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-27 01:27:48,809 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-08-27 01:27:48,809 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 297 flow [2023-08-27 01:27:48,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:48,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:48,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:48,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 01:27:49,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:49,014 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:49,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:49,015 INFO L85 PathProgramCache]: Analyzing trace with hash 930758952, now seen corresponding path program 3 times [2023-08-27 01:27:49,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:49,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104259227] [2023-08-27 01:27:49,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:49,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:49,093 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 01:27:49,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104259227] [2023-08-27 01:27:49,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104259227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318561967] [2023-08-27 01:27:49,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:27:49,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:49,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:49,094 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 01:27:49,096 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 01:27:49,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:27:49,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:27:49,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:27:49,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:49,252 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 01:27:49,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:27:49,305 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 01:27:49,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318561967] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:27:49,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:27:49,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-27 01:27:49,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066631487] [2023-08-27 01:27:49,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:27:49,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 01:27:49,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:49,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 01:27:49,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-08-27 01:27:49,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:27:49,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 297 flow. Second operand has 14 states, 14 states have (on average 126.28571428571429) internal successors, (1768), 14 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:49,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:49,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:27:49,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:49,707 INFO L124 PetriNetUnfolderBase]: 2527/3562 cut-off events. [2023-08-27 01:27:49,707 INFO L125 PetriNetUnfolderBase]: For 7051/7267 co-relation queries the response was YES. [2023-08-27 01:27:49,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12931 conditions, 3562 events. 2527/3562 cut-off events. For 7051/7267 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 15686 event pairs, 1170 based on Foata normal form. 238/3694 useless extension candidates. Maximal degree in co-relation 12908. Up to 2998 conditions per place. [2023-08-27 01:27:49,719 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 107 selfloop transitions, 25 changer transitions 0/134 dead transitions. [2023-08-27 01:27:49,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 134 transitions, 981 flow [2023-08-27 01:27:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:27:49,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:27:49,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1300 transitions. [2023-08-27 01:27:49,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39039039039039036 [2023-08-27 01:27:49,722 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1300 transitions. [2023-08-27 01:27:49,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1300 transitions. [2023-08-27 01:27:49,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:49,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1300 transitions. [2023-08-27 01:27:49,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 130.0) internal successors, (1300), 10 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:49,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:49,727 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:49,727 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 297 flow. Second operand 10 states and 1300 transitions. [2023-08-27 01:27:49,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 134 transitions, 981 flow [2023-08-27 01:27:49,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 134 transitions, 940 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-27 01:27:49,737 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 441 flow [2023-08-27 01:27:49,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=441, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2023-08-27 01:27:49,738 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2023-08-27 01:27:49,738 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 441 flow [2023-08-27 01:27:49,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 126.28571428571429) internal successors, (1768), 14 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:49,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:49,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:49,749 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 01:27:49,943 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,SelfDestructingSolverStorable20 [2023-08-27 01:27:49,943 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:49,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash 965516502, now seen corresponding path program 4 times [2023-08-27 01:27:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:49,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722917739] [2023-08-27 01:27:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:50,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:50,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722917739] [2023-08-27 01:27:50,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722917739] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:50,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093951821] [2023-08-27 01:27:50,020 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:27:50,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:50,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:50,021 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 01:27:50,022 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 01:27:50,103 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:27:50,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:27:50,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:27:50,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:50,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:27:50,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:50,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093951821] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:50,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 01:27:50,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2023-08-27 01:27:50,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420847279] [2023-08-27 01:27:50,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:50,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:27:50,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:50,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:27:50,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-08-27 01:27:50,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:27:50,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 441 flow. Second operand has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:50,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:50,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:27:50,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:50,465 INFO L124 PetriNetUnfolderBase]: 2505/3540 cut-off events. [2023-08-27 01:27:50,465 INFO L125 PetriNetUnfolderBase]: For 9191/9407 co-relation queries the response was YES. [2023-08-27 01:27:50,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13610 conditions, 3540 events. 2505/3540 cut-off events. For 9191/9407 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15864 event pairs, 792 based on Foata normal form. 238/3672 useless extension candidates. Maximal degree in co-relation 13584. Up to 2161 conditions per place. [2023-08-27 01:27:50,480 INFO L140 encePairwiseOnDemand]: 325/333 looper letters, 100 selfloop transitions, 24 changer transitions 0/126 dead transitions. [2023-08-27 01:27:50,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 126 transitions, 992 flow [2023-08-27 01:27:50,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:27:50,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:27:50,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 919 transitions. [2023-08-27 01:27:50,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39425139425139427 [2023-08-27 01:27:50,482 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 919 transitions. [2023-08-27 01:27:50,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 919 transitions. [2023-08-27 01:27:50,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:50,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 919 transitions. [2023-08-27 01:27:50,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:50,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:50,486 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:50,486 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 441 flow. Second operand 7 states and 919 transitions. [2023-08-27 01:27:50,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 126 transitions, 992 flow [2023-08-27 01:27:50,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 126 transitions, 922 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-27 01:27:50,504 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 536 flow [2023-08-27 01:27:50,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=536, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2023-08-27 01:27:50,504 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 38 predicate places. [2023-08-27 01:27:50,504 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 536 flow [2023-08-27 01:27:50,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:50,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:50,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:50,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-27 01:27:50,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:50,709 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:50,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:50,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1767309094, now seen corresponding path program 5 times [2023-08-27 01:27:50,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:50,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180223122] [2023-08-27 01:27:50,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:50,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:50,790 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 01:27:50,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:50,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180223122] [2023-08-27 01:27:50,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180223122] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245788081] [2023-08-27 01:27:50,791 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:27:50,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:50,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:50,792 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 01:27:50,793 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 01:27:50,880 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:27:50,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:27:50,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:27:50,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:50,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:27:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:51,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245788081] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:27:51,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:27:51,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-08-27 01:27:51,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142032360] [2023-08-27 01:27:51,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:27:51,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 01:27:51,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:51,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 01:27:51,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-08-27 01:27:51,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 333 [2023-08-27 01:27:51,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 536 flow. Second operand has 14 states, 14 states have (on average 121.28571428571429) internal successors, (1698), 14 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:51,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:51,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 333 [2023-08-27 01:27:51,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:51,534 INFO L124 PetriNetUnfolderBase]: 3058/4281 cut-off events. [2023-08-27 01:27:51,535 INFO L125 PetriNetUnfolderBase]: For 13609/13609 co-relation queries the response was YES. [2023-08-27 01:27:51,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17013 conditions, 4281 events. 3058/4281 cut-off events. For 13609/13609 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 18515 event pairs, 708 based on Foata normal form. 22/4175 useless extension candidates. Maximal degree in co-relation 16984. Up to 1879 conditions per place. [2023-08-27 01:27:51,551 INFO L140 encePairwiseOnDemand]: 323/333 looper letters, 119 selfloop transitions, 71 changer transitions 0/190 dead transitions. [2023-08-27 01:27:51,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 190 transitions, 1632 flow [2023-08-27 01:27:51,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 01:27:51,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 01:27:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1628 transitions. [2023-08-27 01:27:51,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37606837606837606 [2023-08-27 01:27:51,554 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1628 transitions. [2023-08-27 01:27:51,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1628 transitions. [2023-08-27 01:27:51,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:51,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1628 transitions. [2023-08-27 01:27:51,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 125.23076923076923) internal successors, (1628), 13 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:51,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 333.0) internal successors, (4662), 14 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:51,560 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 333.0) internal successors, (4662), 14 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:51,560 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 536 flow. Second operand 13 states and 1628 transitions. [2023-08-27 01:27:51,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 190 transitions, 1632 flow [2023-08-27 01:27:51,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 190 transitions, 1562 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-08-27 01:27:51,588 INFO L231 Difference]: Finished difference. Result has 84 places, 118 transitions, 949 flow [2023-08-27 01:27:51,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=949, PETRI_PLACES=84, PETRI_TRANSITIONS=118} [2023-08-27 01:27:51,588 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 46 predicate places. [2023-08-27 01:27:51,588 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 118 transitions, 949 flow [2023-08-27 01:27:51,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 121.28571428571429) internal successors, (1698), 14 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:51,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:51,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:51,599 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 01:27:51,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:51,793 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:51,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:51,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1377655524, now seen corresponding path program 6 times [2023-08-27 01:27:51,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:51,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308065409] [2023-08-27 01:27:51,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:51,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:51,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:51,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308065409] [2023-08-27 01:27:51,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308065409] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:51,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642782290] [2023-08-27 01:27:51,859 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:27:51,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:51,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:51,860 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 01:27:51,862 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 01:27:51,953 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:27:51,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:27:51,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:27:51,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:52,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:27:52,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:27:52,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642782290] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:52,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 01:27:52,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2023-08-27 01:27:52,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320818303] [2023-08-27 01:27:52,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:27:52,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:27:52,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:52,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:27:52,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-27 01:27:52,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:27:52,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 118 transitions, 949 flow. Second operand has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:52,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:52,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:27:52,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:27:52,426 INFO L124 PetriNetUnfolderBase]: 2843/4010 cut-off events. [2023-08-27 01:27:52,426 INFO L125 PetriNetUnfolderBase]: For 12665/12689 co-relation queries the response was YES. [2023-08-27 01:27:52,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16409 conditions, 4010 events. 2843/4010 cut-off events. For 12665/12689 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 17608 event pairs, 824 based on Foata normal form. 46/3926 useless extension candidates. Maximal degree in co-relation 16380. Up to 2499 conditions per place. [2023-08-27 01:27:52,440 INFO L140 encePairwiseOnDemand]: 325/333 looper letters, 123 selfloop transitions, 39 changer transitions 0/172 dead transitions. [2023-08-27 01:27:52,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 172 transitions, 1590 flow [2023-08-27 01:27:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:27:52,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:27:52,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 917 transitions. [2023-08-27 01:27:52,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933933933933934 [2023-08-27 01:27:52,443 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 917 transitions. [2023-08-27 01:27:52,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 917 transitions. [2023-08-27 01:27:52,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:27:52,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 917 transitions. [2023-08-27 01:27:52,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.0) internal successors, (917), 7 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:52,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:52,446 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:52,446 INFO L175 Difference]: Start difference. First operand has 84 places, 118 transitions, 949 flow. Second operand 7 states and 917 transitions. [2023-08-27 01:27:52,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 172 transitions, 1590 flow [2023-08-27 01:27:52,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 172 transitions, 1529 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 01:27:52,470 INFO L231 Difference]: Finished difference. Result has 86 places, 123 transitions, 1060 flow [2023-08-27 01:27:52,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1060, PETRI_PLACES=86, PETRI_TRANSITIONS=123} [2023-08-27 01:27:52,470 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 48 predicate places. [2023-08-27 01:27:52,470 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 123 transitions, 1060 flow [2023-08-27 01:27:52,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:52,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:27:52,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:27:52,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-27 01:27:52,675 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,SelfDestructingSolverStorable23 [2023-08-27 01:27:52,675 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:27:52,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:27:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1253643082, now seen corresponding path program 1 times [2023-08-27 01:27:52,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:27:52,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854972440] [2023-08-27 01:27:52,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:52,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:27:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:27:53,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:27:53,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854972440] [2023-08-27 01:27:53,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854972440] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:27:53,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819455359] [2023-08-27 01:27:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:27:53,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:27:53,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:27:53,666 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 01:27:53,668 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 01:27:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:27:53,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-27 01:27:53,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:27:53,837 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 01:27:53,896 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:27:54,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:27:54,045 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 01:27:54,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:27:54,104 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 01:27:54,197 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:27:54,199 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:27:54,199 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 17 treesize of output 10 [2023-08-27 01:27:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:27:54,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:27:54,821 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:27:54,821 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 60 treesize of output 49 [2023-08-27 01:27:54,842 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:27:54,843 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 3990 treesize of output 3614 [2023-08-27 01:27:54,861 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 216 treesize of output 204 [2023-08-27 01:27:54,866 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 180 [2023-08-27 01:27:54,877 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:27:54,877 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 91 [2023-08-27 01:27:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:27:56,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819455359] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:27:56,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:27:56,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 27 [2023-08-27 01:27:56,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204752929] [2023-08-27 01:27:56,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:27:56,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 01:27:56,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:27:56,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 01:27:56,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=690, Unknown=9, NotChecked=0, Total=812 [2023-08-27 01:27:56,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 333 [2023-08-27 01:27:56,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 123 transitions, 1060 flow. Second operand has 29 states, 29 states have (on average 95.06896551724138) internal successors, (2757), 29 states have internal predecessors, (2757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:27:56,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:27:56,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 333 [2023-08-27 01:27:56,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:00,718 INFO L124 PetriNetUnfolderBase]: 3309/4656 cut-off events. [2023-08-27 01:28:00,719 INFO L125 PetriNetUnfolderBase]: For 20628/20847 co-relation queries the response was YES. [2023-08-27 01:28:00,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20677 conditions, 4656 events. 3309/4656 cut-off events. For 20628/20847 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 21481 event pairs, 779 based on Foata normal form. 159/4668 useless extension candidates. Maximal degree in co-relation 20646. Up to 3901 conditions per place. [2023-08-27 01:28:00,736 INFO L140 encePairwiseOnDemand]: 322/333 looper letters, 196 selfloop transitions, 111 changer transitions 6/319 dead transitions. [2023-08-27 01:28:00,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 319 transitions, 3424 flow [2023-08-27 01:28:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 01:28:00,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 01:28:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1331 transitions. [2023-08-27 01:28:00,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30746130746130745 [2023-08-27 01:28:00,739 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1331 transitions. [2023-08-27 01:28:00,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1331 transitions. [2023-08-27 01:28:00,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:00,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1331 transitions. [2023-08-27 01:28:00,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 102.38461538461539) internal successors, (1331), 13 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:00,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 333.0) internal successors, (4662), 14 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:00,743 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 333.0) internal successors, (4662), 14 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:00,743 INFO L175 Difference]: Start difference. First operand has 86 places, 123 transitions, 1060 flow. Second operand 13 states and 1331 transitions. [2023-08-27 01:28:00,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 319 transitions, 3424 flow [2023-08-27 01:28:00,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 319 transitions, 3178 flow, removed 50 selfloop flow, removed 4 redundant places. [2023-08-27 01:28:00,787 INFO L231 Difference]: Finished difference. Result has 101 places, 202 transitions, 2099 flow [2023-08-27 01:28:00,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2099, PETRI_PLACES=101, PETRI_TRANSITIONS=202} [2023-08-27 01:28:00,788 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 63 predicate places. [2023-08-27 01:28:00,788 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 202 transitions, 2099 flow [2023-08-27 01:28:00,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 95.06896551724138) internal successors, (2757), 29 states have internal predecessors, (2757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:00,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:00,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:00,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 01:28:00,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:00,994 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:00,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:00,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1184996042, now seen corresponding path program 2 times [2023-08-27 01:28:00,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:00,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702085509] [2023-08-27 01:28:00,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:00,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:01,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:01,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702085509] [2023-08-27 01:28:01,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702085509] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:01,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510435481] [2023-08-27 01:28:01,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:28:01,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:01,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:01,475 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 01:28:01,477 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 01:28:01,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:28:01,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:28:01,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 01:28:01,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:01,840 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:28:01,841 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:01,842 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 17 treesize of output 10 [2023-08-27 01:28:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:01,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:01,910 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:01,910 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 28 treesize of output 21 [2023-08-27 01:28:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:02,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510435481] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:02,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:02,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 23 [2023-08-27 01:28:02,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984881651] [2023-08-27 01:28:02,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:02,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:28:02,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:02,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:28:02,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:28:02,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 333 [2023-08-27 01:28:02,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 202 transitions, 2099 flow. Second operand has 25 states, 25 states have (on average 101.76) internal successors, (2544), 25 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:02,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:02,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 333 [2023-08-27 01:28:02,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:03,518 INFO L124 PetriNetUnfolderBase]: 3584/5111 cut-off events. [2023-08-27 01:28:03,518 INFO L125 PetriNetUnfolderBase]: For 22079/22079 co-relation queries the response was YES. [2023-08-27 01:28:03,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23428 conditions, 5111 events. 3584/5111 cut-off events. For 22079/22079 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23545 event pairs, 809 based on Foata normal form. 2/4985 useless extension candidates. Maximal degree in co-relation 23390. Up to 4459 conditions per place. [2023-08-27 01:28:03,543 INFO L140 encePairwiseOnDemand]: 318/333 looper letters, 245 selfloop transitions, 147 changer transitions 6/398 dead transitions. [2023-08-27 01:28:03,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 398 transitions, 4473 flow [2023-08-27 01:28:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 01:28:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 01:28:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2459 transitions. [2023-08-27 01:28:03,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321060190625408 [2023-08-27 01:28:03,546 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2459 transitions. [2023-08-27 01:28:03,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2459 transitions. [2023-08-27 01:28:03,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:03,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2459 transitions. [2023-08-27 01:28:03,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 106.91304347826087) internal successors, (2459), 23 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:03,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 333.0) internal successors, (7992), 24 states have internal predecessors, (7992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:03,554 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 333.0) internal successors, (7992), 24 states have internal predecessors, (7992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:03,554 INFO L175 Difference]: Start difference. First operand has 101 places, 202 transitions, 2099 flow. Second operand 23 states and 2459 transitions. [2023-08-27 01:28:03,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 398 transitions, 4473 flow [2023-08-27 01:28:03,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 398 transitions, 4306 flow, removed 51 selfloop flow, removed 3 redundant places. [2023-08-27 01:28:03,610 INFO L231 Difference]: Finished difference. Result has 132 places, 276 transitions, 3293 flow [2023-08-27 01:28:03,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3293, PETRI_PLACES=132, PETRI_TRANSITIONS=276} [2023-08-27 01:28:03,610 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 94 predicate places. [2023-08-27 01:28:03,610 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 276 transitions, 3293 flow [2023-08-27 01:28:03,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 101.76) internal successors, (2544), 25 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:03,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:03,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:03,618 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 01:28:03,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:03,816 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:03,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1199868879, now seen corresponding path program 1 times [2023-08-27 01:28:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:03,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111200492] [2023-08-27 01:28:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:03,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:04,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:04,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111200492] [2023-08-27 01:28:04,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111200492] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:04,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76329709] [2023-08-27 01:28:04,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:04,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:04,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:04,339 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 01:28:04,360 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 01:28:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:04,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 01:28:04,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:04,482 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 01:28:04,528 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:28:04,560 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:28:04,588 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:28:04,673 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 [2023-08-27 01:28:04,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:04,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:04,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76329709] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:04,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:04,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 4] total 18 [2023-08-27 01:28:04,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399207249] [2023-08-27 01:28:04,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:04,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 01:28:04,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:04,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 01:28:04,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-08-27 01:28:04,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 333 [2023-08-27 01:28:04,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 276 transitions, 3293 flow. Second operand has 20 states, 20 states have (on average 107.85) internal successors, (2157), 20 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:04,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:04,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 333 [2023-08-27 01:28:04,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:05,575 INFO L124 PetriNetUnfolderBase]: 4026/5780 cut-off events. [2023-08-27 01:28:05,576 INFO L125 PetriNetUnfolderBase]: For 45542/46047 co-relation queries the response was YES. [2023-08-27 01:28:05,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31211 conditions, 5780 events. 4026/5780 cut-off events. For 45542/46047 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 29342 event pairs, 672 based on Foata normal form. 406/5966 useless extension candidates. Maximal degree in co-relation 31161. Up to 4582 conditions per place. [2023-08-27 01:28:05,606 INFO L140 encePairwiseOnDemand]: 322/333 looper letters, 241 selfloop transitions, 195 changer transitions 1/452 dead transitions. [2023-08-27 01:28:05,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 452 transitions, 6046 flow [2023-08-27 01:28:05,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:28:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:28:05,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 928 transitions. [2023-08-27 01:28:05,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3483483483483483 [2023-08-27 01:28:05,608 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 928 transitions. [2023-08-27 01:28:05,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 928 transitions. [2023-08-27 01:28:05,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:05,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 928 transitions. [2023-08-27 01:28:05,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:05,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:05,611 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:05,611 INFO L175 Difference]: Start difference. First operand has 132 places, 276 transitions, 3293 flow. Second operand 8 states and 928 transitions. [2023-08-27 01:28:05,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 452 transitions, 6046 flow [2023-08-27 01:28:05,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 452 transitions, 5925 flow, removed 34 selfloop flow, removed 5 redundant places. [2023-08-27 01:28:05,717 INFO L231 Difference]: Finished difference. Result has 138 places, 375 transitions, 5100 flow [2023-08-27 01:28:05,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=3176, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5100, PETRI_PLACES=138, PETRI_TRANSITIONS=375} [2023-08-27 01:28:05,718 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 100 predicate places. [2023-08-27 01:28:05,718 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 375 transitions, 5100 flow [2023-08-27 01:28:05,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.85) internal successors, (2157), 20 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:05,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:05,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:05,723 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 01:28:05,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:05,923 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:05,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:05,924 INFO L85 PathProgramCache]: Analyzing trace with hash 693351733, now seen corresponding path program 2 times [2023-08-27 01:28:05,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:05,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748013408] [2023-08-27 01:28:05,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:05,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:06,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:06,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748013408] [2023-08-27 01:28:06,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748013408] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:06,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42861333] [2023-08-27 01:28:06,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:28:06,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:06,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:06,478 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 01:28:06,481 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 01:28:06,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:28:06,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:28:06,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 01:28:06,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:06,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:28:06,722 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 01:28:06,768 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 [2023-08-27 01:28:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:06,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:06,868 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_983 (Array Int Int))) (= (mod c_~sum1~0 4294967296) (mod (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_983) c_~A~0.base) c_~A~0.offset) c_~sum3~0 c_~sum2~0) 4294967296))) is different from false [2023-08-27 01:28:06,878 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:06,878 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 56 treesize of output 44 [2023-08-27 01:28:06,881 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 18 treesize of output 16 [2023-08-27 01:28:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-27 01:28:07,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42861333] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:07,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:07,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 20 [2023-08-27 01:28:07,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683579975] [2023-08-27 01:28:07,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:07,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 01:28:07,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:07,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 01:28:07,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=335, Unknown=1, NotChecked=38, Total=462 [2023-08-27 01:28:07,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 333 [2023-08-27 01:28:07,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 375 transitions, 5100 flow. Second operand has 22 states, 22 states have (on average 107.45454545454545) internal successors, (2364), 22 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:07,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:07,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 333 [2023-08-27 01:28:07,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:08,249 INFO L124 PetriNetUnfolderBase]: 4495/6485 cut-off events. [2023-08-27 01:28:08,250 INFO L125 PetriNetUnfolderBase]: For 61475/62101 co-relation queries the response was YES. [2023-08-27 01:28:08,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38446 conditions, 6485 events. 4495/6485 cut-off events. For 61475/62101 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 34160 event pairs, 644 based on Foata normal form. 490/6733 useless extension candidates. Maximal degree in co-relation 38391. Up to 4714 conditions per place. [2023-08-27 01:28:08,293 INFO L140 encePairwiseOnDemand]: 323/333 looper letters, 245 selfloop transitions, 264 changer transitions 1/525 dead transitions. [2023-08-27 01:28:08,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 525 transitions, 7834 flow [2023-08-27 01:28:08,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:28:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:28:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 928 transitions. [2023-08-27 01:28:08,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3483483483483483 [2023-08-27 01:28:08,294 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 928 transitions. [2023-08-27 01:28:08,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 928 transitions. [2023-08-27 01:28:08,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:08,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 928 transitions. [2023-08-27 01:28:08,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:08,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:08,297 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:08,297 INFO L175 Difference]: Start difference. First operand has 138 places, 375 transitions, 5100 flow. Second operand 8 states and 928 transitions. [2023-08-27 01:28:08,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 525 transitions, 7834 flow [2023-08-27 01:28:08,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 525 transitions, 7704 flow, removed 64 selfloop flow, removed 1 redundant places. [2023-08-27 01:28:08,521 INFO L231 Difference]: Finished difference. Result has 147 places, 448 transitions, 6899 flow [2023-08-27 01:28:08,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=4972, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6899, PETRI_PLACES=147, PETRI_TRANSITIONS=448} [2023-08-27 01:28:08,521 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 109 predicate places. [2023-08-27 01:28:08,521 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 448 transitions, 6899 flow [2023-08-27 01:28:08,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 107.45454545454545) internal successors, (2364), 22 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:08,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:08,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:08,527 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 01:28:08,726 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,SelfDestructingSolverStorable27 [2023-08-27 01:28:08,726 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:08,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1196777839, now seen corresponding path program 3 times [2023-08-27 01:28:08,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:08,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902725963] [2023-08-27 01:28:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:08,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:09,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:09,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902725963] [2023-08-27 01:28:09,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902725963] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:09,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144459260] [2023-08-27 01:28:09,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:28:09,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:09,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:09,213 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 01:28:09,215 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 01:28:09,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:28:09,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:28:09,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 01:28:09,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:09,407 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 [2023-08-27 01:28:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:09,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:09,488 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:09,488 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 28 treesize of output 21 [2023-08-27 01:28:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:09,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144459260] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:09,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:09,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 14 [2023-08-27 01:28:09,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336374572] [2023-08-27 01:28:09,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:09,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 01:28:09,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:09,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 01:28:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-27 01:28:09,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 333 [2023-08-27 01:28:09,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 448 transitions, 6899 flow. Second operand has 16 states, 16 states have (on average 108.1875) internal successors, (1731), 16 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:09,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:09,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 333 [2023-08-27 01:28:09,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:10,664 INFO L124 PetriNetUnfolderBase]: 5158/7368 cut-off events. [2023-08-27 01:28:10,664 INFO L125 PetriNetUnfolderBase]: For 87278/88009 co-relation queries the response was YES. [2023-08-27 01:28:10,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47842 conditions, 7368 events. 5158/7368 cut-off events. For 87278/88009 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 38874 event pairs, 1151 based on Foata normal form. 601/7678 useless extension candidates. Maximal degree in co-relation 47783. Up to 6610 conditions per place. [2023-08-27 01:28:10,715 INFO L140 encePairwiseOnDemand]: 323/333 looper letters, 402 selfloop transitions, 162 changer transitions 1/580 dead transitions. [2023-08-27 01:28:10,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 580 transitions, 9802 flow [2023-08-27 01:28:10,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:28:10,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:28:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 920 transitions. [2023-08-27 01:28:10,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34534534534534533 [2023-08-27 01:28:10,717 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 920 transitions. [2023-08-27 01:28:10,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 920 transitions. [2023-08-27 01:28:10,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:10,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 920 transitions. [2023-08-27 01:28:10,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:10,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:10,719 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:10,719 INFO L175 Difference]: Start difference. First operand has 147 places, 448 transitions, 6899 flow. Second operand 8 states and 920 transitions. [2023-08-27 01:28:10,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 580 transitions, 9802 flow [2023-08-27 01:28:10,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 580 transitions, 9574 flow, removed 58 selfloop flow, removed 3 redundant places. [2023-08-27 01:28:10,958 INFO L231 Difference]: Finished difference. Result has 154 places, 526 transitions, 8558 flow [2023-08-27 01:28:10,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=6693, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8558, PETRI_PLACES=154, PETRI_TRANSITIONS=526} [2023-08-27 01:28:10,959 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 116 predicate places. [2023-08-27 01:28:10,959 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 526 transitions, 8558 flow [2023-08-27 01:28:10,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 108.1875) internal successors, (1731), 16 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:10,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:10,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:10,965 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 01:28:11,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 01:28:11,164 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:11,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:11,164 INFO L85 PathProgramCache]: Analyzing trace with hash 460597327, now seen corresponding path program 4 times [2023-08-27 01:28:11,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:11,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742916565] [2023-08-27 01:28:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:11,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:11,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:11,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742916565] [2023-08-27 01:28:11,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742916565] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:11,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045611465] [2023-08-27 01:28:11,422 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:28:11,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:11,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:11,423 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 01:28:11,425 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 01:28:11,524 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:28:11,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:28:11,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 01:28:11,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:11,557 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 01:28:11,596 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:28:11,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:28:11,659 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:28:11,722 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 [2023-08-27 01:28:11,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:11,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:11,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045611465] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:11,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:11,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 4] total 15 [2023-08-27 01:28:11,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213663479] [2023-08-27 01:28:11,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:11,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 01:28:11,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:11,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 01:28:11,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-08-27 01:28:11,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 333 [2023-08-27 01:28:11,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 526 transitions, 8558 flow. Second operand has 17 states, 17 states have (on average 108.47058823529412) internal successors, (1844), 17 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:11,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:11,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 333 [2023-08-27 01:28:11,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:12,988 INFO L124 PetriNetUnfolderBase]: 5327/7620 cut-off events. [2023-08-27 01:28:12,989 INFO L125 PetriNetUnfolderBase]: For 94475/95246 co-relation queries the response was YES. [2023-08-27 01:28:13,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50545 conditions, 7620 events. 5327/7620 cut-off events. For 94475/95246 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 40627 event pairs, 1159 based on Foata normal form. 625/7945 useless extension candidates. Maximal degree in co-relation 50482. Up to 7050 conditions per place. [2023-08-27 01:28:13,038 INFO L140 encePairwiseOnDemand]: 323/333 looper letters, 439 selfloop transitions, 118 changer transitions 1/573 dead transitions. [2023-08-27 01:28:13,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 573 transitions, 10064 flow [2023-08-27 01:28:13,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:28:13,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:28:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 917 transitions. [2023-08-27 01:28:13,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3442192192192192 [2023-08-27 01:28:13,040 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 917 transitions. [2023-08-27 01:28:13,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 917 transitions. [2023-08-27 01:28:13,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:13,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 917 transitions. [2023-08-27 01:28:13,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:13,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:13,046 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:13,046 INFO L175 Difference]: Start difference. First operand has 154 places, 526 transitions, 8558 flow. Second operand 8 states and 917 transitions. [2023-08-27 01:28:13,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 573 transitions, 10064 flow [2023-08-27 01:28:13,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 573 transitions, 9787 flow, removed 32 selfloop flow, removed 4 redundant places. [2023-08-27 01:28:13,317 INFO L231 Difference]: Finished difference. Result has 159 places, 534 transitions, 8641 flow [2023-08-27 01:28:13,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=8281, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8641, PETRI_PLACES=159, PETRI_TRANSITIONS=534} [2023-08-27 01:28:13,317 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 121 predicate places. [2023-08-27 01:28:13,317 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 534 transitions, 8641 flow [2023-08-27 01:28:13,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 108.47058823529412) internal successors, (1844), 17 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:13,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:13,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:13,322 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 01:28:13,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:13,521 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:13,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:13,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1524637126, now seen corresponding path program 3 times [2023-08-27 01:28:13,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:13,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586247544] [2023-08-27 01:28:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:13,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:14,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:14,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586247544] [2023-08-27 01:28:14,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586247544] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:14,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341793844] [2023-08-27 01:28:14,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:28:14,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:14,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:14,106 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 01:28:14,108 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 01:28:14,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:28:14,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:28:14,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 01:28:14,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:14,475 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 [2023-08-27 01:28:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:14,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:14,559 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:14,559 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2023-08-27 01:28:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:14,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341793844] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:14,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:14,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 7] total 26 [2023-08-27 01:28:14,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711355716] [2023-08-27 01:28:14,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:14,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 01:28:14,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:14,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 01:28:14,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2023-08-27 01:28:14,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 333 [2023-08-27 01:28:14,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 534 transitions, 8641 flow. Second operand has 28 states, 28 states have (on average 91.46428571428571) internal successors, (2561), 28 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:14,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:14,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 333 [2023-08-27 01:28:14,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:16,541 INFO L124 PetriNetUnfolderBase]: 5734/8260 cut-off events. [2023-08-27 01:28:16,542 INFO L125 PetriNetUnfolderBase]: For 81192/81192 co-relation queries the response was YES. [2023-08-27 01:28:16,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53145 conditions, 8260 events. 5734/8260 cut-off events. For 81192/81192 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 42854 event pairs, 1441 based on Foata normal form. 1/8133 useless extension candidates. Maximal degree in co-relation 53080. Up to 7566 conditions per place. [2023-08-27 01:28:16,597 INFO L140 encePairwiseOnDemand]: 321/333 looper letters, 478 selfloop transitions, 145 changer transitions 4/627 dead transitions. [2023-08-27 01:28:16,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 627 transitions, 10769 flow [2023-08-27 01:28:16,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 01:28:16,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 01:28:16,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1360 transitions. [2023-08-27 01:28:16,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29172029172029174 [2023-08-27 01:28:16,599 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1360 transitions. [2023-08-27 01:28:16,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1360 transitions. [2023-08-27 01:28:16,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:16,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1360 transitions. [2023-08-27 01:28:16,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 97.14285714285714) internal successors, (1360), 14 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:16,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 333.0) internal successors, (4995), 15 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:16,603 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 333.0) internal successors, (4995), 15 states have internal predecessors, (4995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:16,603 INFO L175 Difference]: Start difference. First operand has 159 places, 534 transitions, 8641 flow. Second operand 14 states and 1360 transitions. [2023-08-27 01:28:16,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 627 transitions, 10769 flow [2023-08-27 01:28:16,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 627 transitions, 10650 flow, removed 23 selfloop flow, removed 3 redundant places. [2023-08-27 01:28:16,933 INFO L231 Difference]: Finished difference. Result has 173 places, 557 transitions, 9191 flow [2023-08-27 01:28:16,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=8522, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9191, PETRI_PLACES=173, PETRI_TRANSITIONS=557} [2023-08-27 01:28:16,934 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 135 predicate places. [2023-08-27 01:28:16,934 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 557 transitions, 9191 flow [2023-08-27 01:28:16,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 91.46428571428571) internal successors, (2561), 28 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:16,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:16,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:16,938 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 01:28:17,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:17,137 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:17,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1764049688, now seen corresponding path program 4 times [2023-08-27 01:28:17,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:17,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485805793] [2023-08-27 01:28:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:17,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:17,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:17,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485805793] [2023-08-27 01:28:17,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485805793] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:17,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027795634] [2023-08-27 01:28:17,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:28:17,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:17,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:17,639 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 01:28:17,640 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 01:28:17,739 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:28:17,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:28:17,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-27 01:28:17,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:17,781 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 01:28:17,830 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:28:17,865 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:28:17,904 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:28:18,055 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:18,056 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 17 treesize of output 15 [2023-08-27 01:28:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:18,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:19,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027795634] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:19,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:19,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 29 [2023-08-27 01:28:19,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517330492] [2023-08-27 01:28:19,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:19,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-27 01:28:19,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:19,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-27 01:28:19,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=743, Unknown=4, NotChecked=0, Total=930 [2023-08-27 01:28:19,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 333 [2023-08-27 01:28:19,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 557 transitions, 9191 flow. Second operand has 31 states, 31 states have (on average 91.2258064516129) internal successors, (2828), 31 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:19,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:19,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 333 [2023-08-27 01:28:19,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:22,589 INFO L124 PetriNetUnfolderBase]: 6208/9000 cut-off events. [2023-08-27 01:28:22,589 INFO L125 PetriNetUnfolderBase]: For 92439/92439 co-relation queries the response was YES. [2023-08-27 01:28:22,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59459 conditions, 9000 events. 6208/9000 cut-off events. For 92439/92439 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 47818 event pairs, 1593 based on Foata normal form. 3/8875 useless extension candidates. Maximal degree in co-relation 59389. Up to 8101 conditions per place. [2023-08-27 01:28:22,660 INFO L140 encePairwiseOnDemand]: 321/333 looper letters, 539 selfloop transitions, 256 changer transitions 9/804 dead transitions. [2023-08-27 01:28:22,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 804 transitions, 13509 flow [2023-08-27 01:28:22,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-27 01:28:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-27 01:28:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3649 transitions. [2023-08-27 01:28:22,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28836731468310417 [2023-08-27 01:28:22,663 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3649 transitions. [2023-08-27 01:28:22,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3649 transitions. [2023-08-27 01:28:22,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:22,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3649 transitions. [2023-08-27 01:28:22,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 96.02631578947368) internal successors, (3649), 38 states have internal predecessors, (3649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:22,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 333.0) internal successors, (12987), 39 states have internal predecessors, (12987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:22,674 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 333.0) internal successors, (12987), 39 states have internal predecessors, (12987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:22,674 INFO L175 Difference]: Start difference. First operand has 173 places, 557 transitions, 9191 flow. Second operand 38 states and 3649 transitions. [2023-08-27 01:28:22,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 804 transitions, 13509 flow [2023-08-27 01:28:23,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 804 transitions, 13130 flow, removed 30 selfloop flow, removed 8 redundant places. [2023-08-27 01:28:23,097 INFO L231 Difference]: Finished difference. Result has 216 places, 664 transitions, 11321 flow [2023-08-27 01:28:23,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=8888, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=11321, PETRI_PLACES=216, PETRI_TRANSITIONS=664} [2023-08-27 01:28:23,098 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 178 predicate places. [2023-08-27 01:28:23,098 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 664 transitions, 11321 flow [2023-08-27 01:28:23,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 91.2258064516129) internal successors, (2828), 31 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:23,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:23,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:23,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-08-27 01:28:23,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:23,303 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:23,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:23,303 INFO L85 PathProgramCache]: Analyzing trace with hash 858437556, now seen corresponding path program 5 times [2023-08-27 01:28:23,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:23,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131115946] [2023-08-27 01:28:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:23,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:23,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:23,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131115946] [2023-08-27 01:28:23,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131115946] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:23,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862101310] [2023-08-27 01:28:23,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:28:23,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:23,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:23,761 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 01:28:23,763 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 01:28:23,858 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 01:28:23,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:28:23,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 01:28:23,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:24,066 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:24,066 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 17 treesize of output 15 [2023-08-27 01:28:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:24,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:24,195 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:24,196 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 28 treesize of output 21 [2023-08-27 01:28:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:24,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862101310] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:24,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:24,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 22 [2023-08-27 01:28:24,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570352907] [2023-08-27 01:28:24,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:24,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 01:28:24,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:24,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 01:28:24,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2023-08-27 01:28:24,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 333 [2023-08-27 01:28:24,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 664 transitions, 11321 flow. Second operand has 24 states, 24 states have (on average 105.75) internal successors, (2538), 24 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:24,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:24,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 333 [2023-08-27 01:28:24,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:26,944 INFO L124 PetriNetUnfolderBase]: 6598/9562 cut-off events. [2023-08-27 01:28:26,944 INFO L125 PetriNetUnfolderBase]: For 121382/121745 co-relation queries the response was YES. [2023-08-27 01:28:26,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67603 conditions, 9562 events. 6598/9562 cut-off events. For 121382/121745 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 52185 event pairs, 1478 based on Foata normal form. 241/9613 useless extension candidates. Maximal degree in co-relation 67518. Up to 8277 conditions per place. [2023-08-27 01:28:27,029 INFO L140 encePairwiseOnDemand]: 322/333 looper letters, 543 selfloop transitions, 299 changer transitions 10/886 dead transitions. [2023-08-27 01:28:27,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 886 transitions, 15945 flow [2023-08-27 01:28:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-27 01:28:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-27 01:28:27,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3070 transitions. [2023-08-27 01:28:27,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32925782925782926 [2023-08-27 01:28:27,033 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3070 transitions. [2023-08-27 01:28:27,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3070 transitions. [2023-08-27 01:28:27,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:27,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3070 transitions. [2023-08-27 01:28:27,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 109.64285714285714) internal successors, (3070), 28 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:27,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 333.0) internal successors, (9657), 29 states have internal predecessors, (9657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:27,040 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 333.0) internal successors, (9657), 29 states have internal predecessors, (9657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:27,040 INFO L175 Difference]: Start difference. First operand has 216 places, 664 transitions, 11321 flow. Second operand 28 states and 3070 transitions. [2023-08-27 01:28:27,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 886 transitions, 15945 flow [2023-08-27 01:28:27,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 886 transitions, 14978 flow, removed 388 selfloop flow, removed 8 redundant places. [2023-08-27 01:28:27,861 INFO L231 Difference]: Finished difference. Result has 244 places, 805 transitions, 13506 flow [2023-08-27 01:28:27,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=10509, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=13506, PETRI_PLACES=244, PETRI_TRANSITIONS=805} [2023-08-27 01:28:27,862 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 206 predicate places. [2023-08-27 01:28:27,862 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 805 transitions, 13506 flow [2023-08-27 01:28:27,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 105.75) internal successors, (2538), 24 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:27,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:27,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:27,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-08-27 01:28:28,063 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,SelfDestructingSolverStorable32 [2023-08-27 01:28:28,063 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:28,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:28,063 INFO L85 PathProgramCache]: Analyzing trace with hash 619283322, now seen corresponding path program 6 times [2023-08-27 01:28:28,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:28,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922142330] [2023-08-27 01:28:28,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:28,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:28,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:28,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922142330] [2023-08-27 01:28:28,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922142330] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:28,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782571844] [2023-08-27 01:28:28,411 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:28:28,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:28,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:28,412 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 01:28:28,414 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 01:28:28,521 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:28:28,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:28:28,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 01:28:28,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:28,746 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 [2023-08-27 01:28:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:28,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:28,824 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:28,824 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 28 treesize of output 21 [2023-08-27 01:28:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:29,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782571844] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:29,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:29,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 22 [2023-08-27 01:28:29,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560537128] [2023-08-27 01:28:29,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:29,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 01:28:29,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:29,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 01:28:29,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2023-08-27 01:28:29,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 333 [2023-08-27 01:28:29,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 805 transitions, 13506 flow. Second operand has 24 states, 24 states have (on average 101.875) internal successors, (2445), 24 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:29,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:29,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 333 [2023-08-27 01:28:29,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:31,662 INFO L124 PetriNetUnfolderBase]: 6870/9975 cut-off events. [2023-08-27 01:28:31,662 INFO L125 PetriNetUnfolderBase]: For 129029/129029 co-relation queries the response was YES. [2023-08-27 01:28:31,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72343 conditions, 9975 events. 6870/9975 cut-off events. For 129029/129029 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 54077 event pairs, 1657 based on Foata normal form. 2/9849 useless extension candidates. Maximal degree in co-relation 72248. Up to 9253 conditions per place. [2023-08-27 01:28:31,745 INFO L140 encePairwiseOnDemand]: 321/333 looper letters, 658 selfloop transitions, 243 changer transitions 11/912 dead transitions. [2023-08-27 01:28:31,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 912 transitions, 16379 flow [2023-08-27 01:28:31,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 01:28:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 01:28:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2438 transitions. [2023-08-27 01:28:31,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3183183183183183 [2023-08-27 01:28:31,748 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2438 transitions. [2023-08-27 01:28:31,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2438 transitions. [2023-08-27 01:28:31,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:31,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2438 transitions. [2023-08-27 01:28:31,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 106.0) internal successors, (2438), 23 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:31,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 333.0) internal successors, (7992), 24 states have internal predecessors, (7992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:31,754 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 333.0) internal successors, (7992), 24 states have internal predecessors, (7992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:31,754 INFO L175 Difference]: Start difference. First operand has 244 places, 805 transitions, 13506 flow. Second operand 23 states and 2438 transitions. [2023-08-27 01:28:31,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 912 transitions, 16379 flow [2023-08-27 01:28:32,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 912 transitions, 15570 flow, removed 388 selfloop flow, removed 5 redundant places. [2023-08-27 01:28:32,614 INFO L231 Difference]: Finished difference. Result has 268 places, 831 transitions, 13716 flow [2023-08-27 01:28:32,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=12777, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=13716, PETRI_PLACES=268, PETRI_TRANSITIONS=831} [2023-08-27 01:28:32,615 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 230 predicate places. [2023-08-27 01:28:32,615 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 831 transitions, 13716 flow [2023-08-27 01:28:32,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 101.875) internal successors, (2445), 24 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:32,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:32,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:32,621 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 01:28:32,817 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,SelfDestructingSolverStorable33 [2023-08-27 01:28:32,817 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:32,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:32,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1575944241, now seen corresponding path program 5 times [2023-08-27 01:28:32,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:32,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217325796] [2023-08-27 01:28:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:33,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:33,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217325796] [2023-08-27 01:28:33,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217325796] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:33,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538798740] [2023-08-27 01:28:33,374 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:28:33,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:33,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:33,375 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 01:28:33,377 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 01:28:33,485 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:28:33,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:28:33,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 01:28:33,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:33,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:28:33,616 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 01:28:33,643 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2023-08-27 01:28:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:33,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:33,718 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1302 (Array Int Int))) (= (mod (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1302) c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))) c_~sum1~0) 4294967296) (mod (+ c_~sum3~0 c_~sum2~0) 4294967296))) is different from false [2023-08-27 01:28:33,727 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:33,727 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 64 treesize of output 48 [2023-08-27 01:28:33,730 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 16 [2023-08-27 01:28:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-27 01:28:34,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538798740] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:34,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:34,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 22 [2023-08-27 01:28:34,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251453842] [2023-08-27 01:28:34,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:34,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 01:28:34,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:34,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 01:28:34,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=407, Unknown=1, NotChecked=42, Total=552 [2023-08-27 01:28:34,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 333 [2023-08-27 01:28:34,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 831 transitions, 13716 flow. Second operand has 24 states, 24 states have (on average 107.41666666666667) internal successors, (2578), 24 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:34,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:34,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 333 [2023-08-27 01:28:34,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:36,159 INFO L124 PetriNetUnfolderBase]: 6881/9920 cut-off events. [2023-08-27 01:28:36,160 INFO L125 PetriNetUnfolderBase]: For 146231/147137 co-relation queries the response was YES. [2023-08-27 01:28:36,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71946 conditions, 9920 events. 6881/9920 cut-off events. For 146231/147137 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 55502 event pairs, 1292 based on Foata normal form. 546/10018 useless extension candidates. Maximal degree in co-relation 71845. Up to 9095 conditions per place. [2023-08-27 01:28:36,254 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 644 selfloop transitions, 196 changer transitions 1/869 dead transitions. [2023-08-27 01:28:36,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 869 transitions, 15709 flow [2023-08-27 01:28:36,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:28:36,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:28:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 917 transitions. [2023-08-27 01:28:36,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3442192192192192 [2023-08-27 01:28:36,256 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 917 transitions. [2023-08-27 01:28:36,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 917 transitions. [2023-08-27 01:28:36,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:36,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 917 transitions. [2023-08-27 01:28:36,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:36,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:36,259 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:36,259 INFO L175 Difference]: Start difference. First operand has 268 places, 831 transitions, 13716 flow. Second operand 8 states and 917 transitions. [2023-08-27 01:28:36,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 869 transitions, 15709 flow [2023-08-27 01:28:36,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 869 transitions, 15283 flow, removed 15 selfloop flow, removed 10 redundant places. [2023-08-27 01:28:36,941 INFO L231 Difference]: Finished difference. Result has 266 places, 834 transitions, 13755 flow [2023-08-27 01:28:36,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=13290, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13755, PETRI_PLACES=266, PETRI_TRANSITIONS=834} [2023-08-27 01:28:36,942 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 228 predicate places. [2023-08-27 01:28:36,942 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 834 transitions, 13755 flow [2023-08-27 01:28:36,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 107.41666666666667) internal successors, (2578), 24 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:36,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:36,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:36,947 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 01:28:37,143 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,SelfDestructingSolverStorable34 [2023-08-27 01:28:37,144 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:37,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:37,144 INFO L85 PathProgramCache]: Analyzing trace with hash -384687759, now seen corresponding path program 6 times [2023-08-27 01:28:37,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:37,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516178750] [2023-08-27 01:28:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:37,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:37,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:37,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516178750] [2023-08-27 01:28:37,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516178750] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:37,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361257164] [2023-08-27 01:28:37,622 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:28:37,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:37,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:37,623 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 01:28:37,623 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 01:28:37,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:28:37,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:28:37,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 01:28:37,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:37,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:28:37,904 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 01:28:37,932 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 [2023-08-27 01:28:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:37,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:38,034 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:38,034 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 64 treesize of output 48 [2023-08-27 01:28:38,037 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 16 [2023-08-27 01:28:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:38,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361257164] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:38,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:38,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-08-27 01:28:38,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419794275] [2023-08-27 01:28:38,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:38,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 01:28:38,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 01:28:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=398, Unknown=2, NotChecked=0, Total=506 [2023-08-27 01:28:38,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 333 [2023-08-27 01:28:38,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 834 transitions, 13755 flow. Second operand has 23 states, 23 states have (on average 107.34782608695652) internal successors, (2469), 23 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:38,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:38,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 333 [2023-08-27 01:28:38,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:40,591 INFO L124 PetriNetUnfolderBase]: 7115/10249 cut-off events. [2023-08-27 01:28:40,592 INFO L125 PetriNetUnfolderBase]: For 157533/158532 co-relation queries the response was YES. [2023-08-27 01:28:40,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75131 conditions, 10249 events. 7115/10249 cut-off events. For 157533/158532 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 57583 event pairs, 1414 based on Foata normal form. 536/10295 useless extension candidates. Maximal degree in co-relation 75029. Up to 9161 conditions per place. [2023-08-27 01:28:40,694 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 623 selfloop transitions, 256 changer transitions 1/908 dead transitions. [2023-08-27 01:28:40,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 908 transitions, 16294 flow [2023-08-27 01:28:40,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:28:40,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:28:40,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 920 transitions. [2023-08-27 01:28:40,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34534534534534533 [2023-08-27 01:28:40,696 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 920 transitions. [2023-08-27 01:28:40,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 920 transitions. [2023-08-27 01:28:40,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:40,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 920 transitions. [2023-08-27 01:28:40,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:40,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:40,699 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:40,699 INFO L175 Difference]: Start difference. First operand has 266 places, 834 transitions, 13755 flow. Second operand 8 states and 920 transitions. [2023-08-27 01:28:40,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 908 transitions, 16294 flow [2023-08-27 01:28:41,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 908 transitions, 15874 flow, removed 19 selfloop flow, removed 6 redundant places. [2023-08-27 01:28:41,479 INFO L231 Difference]: Finished difference. Result has 269 places, 858 transitions, 14396 flow [2023-08-27 01:28:41,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=13337, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14396, PETRI_PLACES=269, PETRI_TRANSITIONS=858} [2023-08-27 01:28:41,480 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 231 predicate places. [2023-08-27 01:28:41,480 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 858 transitions, 14396 flow [2023-08-27 01:28:41,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 107.34782608695652) internal successors, (2469), 23 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:41,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:41,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:41,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-27 01:28:41,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:41,685 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:41,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:41,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1159459843, now seen corresponding path program 7 times [2023-08-27 01:28:41,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:41,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485488507] [2023-08-27 01:28:41,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:41,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:42,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:42,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485488507] [2023-08-27 01:28:42,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485488507] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:42,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200121339] [2023-08-27 01:28:42,110 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:28:42,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:42,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:42,111 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:28:42,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-27 01:28:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:42,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 01:28:42,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:42,260 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 01:28:42,292 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:28:42,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:28:42,382 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 01:28:42,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:28:42,411 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 01:28:42,437 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 [2023-08-27 01:28:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:42,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:42,533 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1396 (Array Int Int))) (= (mod (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1396) c_~A~0.base) c_~A~0.offset) c_~sum3~0 c_~sum2~0) 4294967296) (mod c_~sum1~0 4294967296))) is different from false [2023-08-27 01:28:42,576 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1396 (Array Int Int)) (v_ArrVal_1395 (Array Int Int))) (= (mod (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1395) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1396) c_~A~0.base) c_~A~0.offset) c_~sum3~0 c_~sum2~0) 4294967296) (mod (+ c_~sum1~0 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4)))) 4294967296))) is different from false [2023-08-27 01:28:42,581 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1396 (Array Int Int)) (v_ArrVal_1395 (Array Int Int))) (= (mod (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1395) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1396) c_~A~0.base) c_~A~0.offset) c_~sum3~0 c_~sum2~0) 4294967296) (mod (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) c_~sum1~0) 4294967296))) is different from false [2023-08-27 01:28:42,592 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1396 (Array Int Int)) (v_ArrVal_1395 (Array Int Int)) (v_ArrVal_1394 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1394))) (= (mod (+ (select (select .cse0 |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) c_~sum1~0) 4294967296) (mod (+ (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1395) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1396) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) c_~sum3~0 c_~sum2~0) 4294967296)))) is different from false [2023-08-27 01:28:42,597 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:42,597 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 56 treesize of output 45 [2023-08-27 01:28:42,600 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 426 treesize of output 386 [2023-08-27 01:28:42,604 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 188 treesize of output 184 [2023-08-27 01:28:42,607 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 184 treesize of output 176 [2023-08-27 01:28:42,612 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 92 treesize of output 82 [2023-08-27 01:28:43,105 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 01:28:43,141 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 01:28:43,153 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 01:28:43,158 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 01:28:43,166 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 01:28:43,191 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 01:28:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-27 01:28:43,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200121339] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:43,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:43,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2023-08-27 01:28:43,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427497115] [2023-08-27 01:28:43,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:43,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 01:28:43,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:43,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 01:28:43,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=364, Unknown=9, NotChecked=172, Total=650 [2023-08-27 01:28:43,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 333 [2023-08-27 01:28:43,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 858 transitions, 14396 flow. Second operand has 26 states, 26 states have (on average 107.46153846153847) internal successors, (2794), 26 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:43,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:43,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 333 [2023-08-27 01:28:43,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:46,063 INFO L124 PetriNetUnfolderBase]: 7161/10366 cut-off events. [2023-08-27 01:28:46,063 INFO L125 PetriNetUnfolderBase]: For 160458/161403 co-relation queries the response was YES. [2023-08-27 01:28:46,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77020 conditions, 10366 events. 7161/10366 cut-off events. For 160458/161403 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 58807 event pairs, 891 based on Foata normal form. 496/10430 useless extension candidates. Maximal degree in co-relation 76916. Up to 7467 conditions per place. [2023-08-27 01:28:46,167 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 464 selfloop transitions, 467 changer transitions 1/960 dead transitions. [2023-08-27 01:28:46,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 960 transitions, 17606 flow [2023-08-27 01:28:46,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:28:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:28:46,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 928 transitions. [2023-08-27 01:28:46,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3483483483483483 [2023-08-27 01:28:46,168 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 928 transitions. [2023-08-27 01:28:46,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 928 transitions. [2023-08-27 01:28:46,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:46,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 928 transitions. [2023-08-27 01:28:46,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:46,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:46,171 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:46,171 INFO L175 Difference]: Start difference. First operand has 269 places, 858 transitions, 14396 flow. Second operand 8 states and 928 transitions. [2023-08-27 01:28:46,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 960 transitions, 17606 flow [2023-08-27 01:28:46,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 960 transitions, 17134 flow, removed 44 selfloop flow, removed 5 redundant places. [2023-08-27 01:28:47,000 INFO L231 Difference]: Finished difference. Result has 274 places, 895 transitions, 16117 flow [2023-08-27 01:28:47,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=13936, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=858, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=432, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16117, PETRI_PLACES=274, PETRI_TRANSITIONS=895} [2023-08-27 01:28:47,000 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 236 predicate places. [2023-08-27 01:28:47,000 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 895 transitions, 16117 flow [2023-08-27 01:28:47,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 107.46153846153847) internal successors, (2794), 26 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:47,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:47,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:47,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-27 01:28:47,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-27 01:28:47,201 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:47,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:47,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1968014900, now seen corresponding path program 7 times [2023-08-27 01:28:47,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:47,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183557679] [2023-08-27 01:28:47,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:47,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:47,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:47,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:47,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183557679] [2023-08-27 01:28:47,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183557679] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:47,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847499326] [2023-08-27 01:28:47,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:28:47,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:47,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:47,528 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:28:47,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-27 01:28:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:47,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 01:28:47,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:47,819 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 [2023-08-27 01:28:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:47,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:47,909 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:47,910 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 24 treesize of output 21 [2023-08-27 01:28:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:48,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847499326] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:48,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:48,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 22 [2023-08-27 01:28:48,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061807318] [2023-08-27 01:28:48,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:48,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 01:28:48,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:48,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 01:28:48,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-08-27 01:28:48,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 333 [2023-08-27 01:28:48,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 895 transitions, 16117 flow. Second operand has 24 states, 24 states have (on average 101.875) internal successors, (2445), 24 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:48,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:48,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 333 [2023-08-27 01:28:48,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:50,893 INFO L124 PetriNetUnfolderBase]: 7502/10912 cut-off events. [2023-08-27 01:28:50,894 INFO L125 PetriNetUnfolderBase]: For 155793/155793 co-relation queries the response was YES. [2023-08-27 01:28:50,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81056 conditions, 10912 events. 7502/10912 cut-off events. For 155793/155793 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 60532 event pairs, 1893 based on Foata normal form. 1/10785 useless extension candidates. Maximal degree in co-relation 80949. Up to 10208 conditions per place. [2023-08-27 01:28:50,996 INFO L140 encePairwiseOnDemand]: 321/333 looper letters, 709 selfloop transitions, 271 changer transitions 14/994 dead transitions. [2023-08-27 01:28:50,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 994 transitions, 19259 flow [2023-08-27 01:28:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 01:28:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 01:28:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2020 transitions. [2023-08-27 01:28:50,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31926663505610875 [2023-08-27 01:28:50,999 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2020 transitions. [2023-08-27 01:28:50,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2020 transitions. [2023-08-27 01:28:51,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:51,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2020 transitions. [2023-08-27 01:28:51,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 106.3157894736842) internal successors, (2020), 19 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:51,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 333.0) internal successors, (6660), 20 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:51,005 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 333.0) internal successors, (6660), 20 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:51,005 INFO L175 Difference]: Start difference. First operand has 274 places, 895 transitions, 16117 flow. Second operand 19 states and 2020 transitions. [2023-08-27 01:28:51,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 994 transitions, 19259 flow [2023-08-27 01:28:52,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 994 transitions, 18820 flow, removed 124 selfloop flow, removed 3 redundant places. [2023-08-27 01:28:52,074 INFO L231 Difference]: Finished difference. Result has 294 places, 924 transitions, 16818 flow [2023-08-27 01:28:52,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=15714, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=895, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=16818, PETRI_PLACES=294, PETRI_TRANSITIONS=924} [2023-08-27 01:28:52,074 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 256 predicate places. [2023-08-27 01:28:52,075 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 924 transitions, 16818 flow [2023-08-27 01:28:52,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 101.875) internal successors, (2445), 24 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:52,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:52,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:52,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-27 01:28:52,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-27 01:28:52,279 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:52,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:52,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1502898111, now seen corresponding path program 8 times [2023-08-27 01:28:52,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:52,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42107626] [2023-08-27 01:28:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:52,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:52,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:52,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42107626] [2023-08-27 01:28:52,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42107626] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:52,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655829227] [2023-08-27 01:28:52,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:28:52,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:52,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:52,505 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:28:52,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-27 01:28:52,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:28:52,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:28:52,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 01:28:52,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:52,707 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 [2023-08-27 01:28:52,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:52,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:52,786 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:52,786 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 24 treesize of output 21 [2023-08-27 01:28:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:52,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655829227] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:52,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:52,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 11 [2023-08-27 01:28:52,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182226922] [2023-08-27 01:28:52,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:52,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 01:28:52,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:52,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 01:28:52,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-27 01:28:52,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 333 [2023-08-27 01:28:52,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 924 transitions, 16818 flow. Second operand has 13 states, 13 states have (on average 125.07692307692308) internal successors, (1626), 13 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:52,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:52,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 333 [2023-08-27 01:28:52,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:28:55,300 INFO L124 PetriNetUnfolderBase]: 7622/11030 cut-off events. [2023-08-27 01:28:55,300 INFO L125 PetriNetUnfolderBase]: For 189532/190562 co-relation queries the response was YES. [2023-08-27 01:28:55,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84950 conditions, 11030 events. 7622/11030 cut-off events. For 189532/190562 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 63428 event pairs, 1456 based on Foata normal form. 567/11066 useless extension candidates. Maximal degree in co-relation 84837. Up to 10102 conditions per place. [2023-08-27 01:28:55,405 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 736 selfloop transitions, 203 changer transitions 1/968 dead transitions. [2023-08-27 01:28:55,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 968 transitions, 19168 flow [2023-08-27 01:28:55,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:28:55,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:28:55,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 921 transitions. [2023-08-27 01:28:55,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39510939510939513 [2023-08-27 01:28:55,407 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 921 transitions. [2023-08-27 01:28:55,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 921 transitions. [2023-08-27 01:28:55,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:28:55,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 921 transitions. [2023-08-27 01:28:55,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.57142857142858) internal successors, (921), 7 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:55,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:55,409 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:55,409 INFO L175 Difference]: Start difference. First operand has 294 places, 924 transitions, 16818 flow. Second operand 7 states and 921 transitions. [2023-08-27 01:28:55,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 968 transitions, 19168 flow [2023-08-27 01:28:56,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 968 transitions, 18751 flow, removed 82 selfloop flow, removed 11 redundant places. [2023-08-27 01:28:56,308 INFO L231 Difference]: Finished difference. Result has 292 places, 939 transitions, 17169 flow [2023-08-27 01:28:56,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=16403, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=728, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17169, PETRI_PLACES=292, PETRI_TRANSITIONS=939} [2023-08-27 01:28:56,311 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 254 predicate places. [2023-08-27 01:28:56,311 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 939 transitions, 17169 flow [2023-08-27 01:28:56,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 125.07692307692308) internal successors, (1626), 13 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:56,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:28:56,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:28:56,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-27 01:28:56,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-27 01:28:56,516 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:28:56,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:28:56,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1148919117, now seen corresponding path program 9 times [2023-08-27 01:28:56,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:28:56,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388628904] [2023-08-27 01:28:56,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:28:56,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:28:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:28:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:28:56,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:28:56,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388628904] [2023-08-27 01:28:56,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388628904] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:28:56,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268421777] [2023-08-27 01:28:56,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:28:56,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:28:56,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:28:56,967 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:28:56,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-27 01:28:57,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:28:57,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:28:57,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 01:28:57,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:28:57,196 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 [2023-08-27 01:28:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:57,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:28:57,262 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:28:57,262 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 28 treesize of output 21 [2023-08-27 01:28:57,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:28:57,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268421777] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:28:57,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:28:57,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 14 [2023-08-27 01:28:57,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659017965] [2023-08-27 01:28:57,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:28:57,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 01:28:57,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:28:57,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 01:28:57,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-27 01:28:57,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 333 [2023-08-27 01:28:57,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 939 transitions, 17169 flow. Second operand has 16 states, 16 states have (on average 108.1875) internal successors, (1731), 16 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:28:57,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:28:57,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 333 [2023-08-27 01:28:57,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:29:00,050 INFO L124 PetriNetUnfolderBase]: 7653/11096 cut-off events. [2023-08-27 01:29:00,050 INFO L125 PetriNetUnfolderBase]: For 200577/201832 co-relation queries the response was YES. [2023-08-27 01:29:00,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86817 conditions, 11096 events. 7653/11096 cut-off events. For 200577/201832 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 64089 event pairs, 1648 based on Foata normal form. 558/11093 useless extension candidates. Maximal degree in co-relation 86701. Up to 10350 conditions per place. [2023-08-27 01:29:00,160 INFO L140 encePairwiseOnDemand]: 323/333 looper letters, 747 selfloop transitions, 200 changer transitions 1/976 dead transitions. [2023-08-27 01:29:00,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 976 transitions, 19428 flow [2023-08-27 01:29:00,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:29:00,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:29:00,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 914 transitions. [2023-08-27 01:29:00,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3430930930930931 [2023-08-27 01:29:00,162 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 914 transitions. [2023-08-27 01:29:00,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 914 transitions. [2023-08-27 01:29:00,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:29:00,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 914 transitions. [2023-08-27 01:29:00,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.25) internal successors, (914), 8 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:00,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:00,164 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:00,164 INFO L175 Difference]: Start difference. First operand has 292 places, 939 transitions, 17169 flow. Second operand 8 states and 914 transitions. [2023-08-27 01:29:00,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 976 transitions, 19428 flow [2023-08-27 01:29:01,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 976 transitions, 19011 flow, removed 100 selfloop flow, removed 2 redundant places. [2023-08-27 01:29:01,137 INFO L231 Difference]: Finished difference. Result has 299 places, 945 transitions, 17323 flow [2023-08-27 01:29:01,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=16782, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=939, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=739, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17323, PETRI_PLACES=299, PETRI_TRANSITIONS=945} [2023-08-27 01:29:01,137 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 261 predicate places. [2023-08-27 01:29:01,138 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 945 transitions, 17323 flow [2023-08-27 01:29:01,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 108.1875) internal successors, (1731), 16 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:01,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:29:01,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:29:01,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-08-27 01:29:01,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-27 01:29:01,342 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:29:01,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:29:01,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1185035323, now seen corresponding path program 10 times [2023-08-27 01:29:01,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:29:01,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80635690] [2023-08-27 01:29:01,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:29:01,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:29:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:29:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:01,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:29:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80635690] [2023-08-27 01:29:01,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80635690] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:29:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809083934] [2023-08-27 01:29:01,702 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:29:01,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:29:01,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:29:01,703 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:29:01,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-27 01:29:01,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:29:01,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:29:01,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 01:29:01,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:29:01,852 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 01:29:01,878 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:29:01,903 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:29:01,928 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:29:01,969 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 [2023-08-27 01:29:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:01,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:29:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:29:02,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809083934] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:29:02,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:29:02,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 4] total 17 [2023-08-27 01:29:02,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213657911] [2023-08-27 01:29:02,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:29:02,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:29:02,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:29:02,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:29:02,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:29:02,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 333 [2023-08-27 01:29:02,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 945 transitions, 17323 flow. Second operand has 19 states, 19 states have (on average 107.6842105263158) internal successors, (2046), 19 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:02,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:29:02,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 333 [2023-08-27 01:29:02,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:29:04,709 INFO L124 PetriNetUnfolderBase]: 7742/11237 cut-off events. [2023-08-27 01:29:04,709 INFO L125 PetriNetUnfolderBase]: For 201539/202726 co-relation queries the response was YES. [2023-08-27 01:29:04,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87661 conditions, 11237 events. 7742/11237 cut-off events. For 201539/202726 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 65167 event pairs, 1756 based on Foata normal form. 585/11277 useless extension candidates. Maximal degree in co-relation 87542. Up to 10318 conditions per place. [2023-08-27 01:29:04,821 INFO L140 encePairwiseOnDemand]: 323/333 looper letters, 730 selfloop transitions, 244 changer transitions 1/1003 dead transitions. [2023-08-27 01:29:04,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 1003 transitions, 19910 flow [2023-08-27 01:29:04,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:29:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:29:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 917 transitions. [2023-08-27 01:29:04,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3442192192192192 [2023-08-27 01:29:04,823 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 917 transitions. [2023-08-27 01:29:04,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 917 transitions. [2023-08-27 01:29:04,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:29:04,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 917 transitions. [2023-08-27 01:29:04,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:04,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:04,825 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:04,825 INFO L175 Difference]: Start difference. First operand has 299 places, 945 transitions, 17323 flow. Second operand 8 states and 917 transitions. [2023-08-27 01:29:04,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 1003 transitions, 19910 flow [2023-08-27 01:29:05,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 1003 transitions, 19452 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-08-27 01:29:05,827 INFO L231 Difference]: Finished difference. Result has 303 places, 957 transitions, 17724 flow [2023-08-27 01:29:05,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=16865, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17724, PETRI_PLACES=303, PETRI_TRANSITIONS=957} [2023-08-27 01:29:05,828 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 265 predicate places. [2023-08-27 01:29:05,828 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 957 transitions, 17724 flow [2023-08-27 01:29:05,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 107.6842105263158) internal successors, (2046), 19 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:05,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:29:05,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:29:05,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-27 01:29:06,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-08-27 01:29:06,029 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:29:06,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:29:06,029 INFO L85 PathProgramCache]: Analyzing trace with hash 373088786, now seen corresponding path program 8 times [2023-08-27 01:29:06,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:29:06,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131409747] [2023-08-27 01:29:06,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:29:06,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:29:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:29:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:06,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:29:06,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131409747] [2023-08-27 01:29:06,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131409747] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:29:06,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322974539] [2023-08-27 01:29:06,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:29:06,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:29:06,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:29:06,463 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:29:06,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-27 01:29:06,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:29:06,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:29:06,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 01:29:06,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:29:06,798 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:29:06,799 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:29:06,800 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 17 treesize of output 10 [2023-08-27 01:29:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:29:06,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:29:06,918 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:29:06,918 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 24 treesize of output 21 [2023-08-27 01:29:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:29:07,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322974539] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:29:07,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:29:07,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 23 [2023-08-27 01:29:07,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676112745] [2023-08-27 01:29:07,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:29:07,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:29:07,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:29:07,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:29:07,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:29:07,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 333 [2023-08-27 01:29:07,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 957 transitions, 17724 flow. Second operand has 25 states, 25 states have (on average 101.56) internal successors, (2539), 25 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:07,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:29:07,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 333 [2023-08-27 01:29:07,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:29:10,509 INFO L124 PetriNetUnfolderBase]: 8257/12031 cut-off events. [2023-08-27 01:29:10,509 INFO L125 PetriNetUnfolderBase]: For 179215/179215 co-relation queries the response was YES. [2023-08-27 01:29:10,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90829 conditions, 12031 events. 8257/12031 cut-off events. For 179215/179215 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 67870 event pairs, 2216 based on Foata normal form. 1/11904 useless extension candidates. Maximal degree in co-relation 90709. Up to 11271 conditions per place. [2023-08-27 01:29:10,631 INFO L140 encePairwiseOnDemand]: 321/333 looper letters, 745 selfloop transitions, 292 changer transitions 1/1038 dead transitions. [2023-08-27 01:29:10,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 1038 transitions, 20779 flow [2023-08-27 01:29:10,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 01:29:10,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 01:29:10,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2432 transitions. [2023-08-27 01:29:10,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3175349262305784 [2023-08-27 01:29:10,634 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2432 transitions. [2023-08-27 01:29:10,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2432 transitions. [2023-08-27 01:29:10,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:29:10,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2432 transitions. [2023-08-27 01:29:10,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 105.73913043478261) internal successors, (2432), 23 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:10,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 333.0) internal successors, (7992), 24 states have internal predecessors, (7992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:10,640 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 333.0) internal successors, (7992), 24 states have internal predecessors, (7992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:10,640 INFO L175 Difference]: Start difference. First operand has 303 places, 957 transitions, 17724 flow. Second operand 23 states and 2432 transitions. [2023-08-27 01:29:10,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 1038 transitions, 20779 flow [2023-08-27 01:29:11,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1038 transitions, 20204 flow, removed 107 selfloop flow, removed 4 redundant places. [2023-08-27 01:29:11,954 INFO L231 Difference]: Finished difference. Result has 324 places, 980 transitions, 18320 flow [2023-08-27 01:29:11,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=17157, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=18320, PETRI_PLACES=324, PETRI_TRANSITIONS=980} [2023-08-27 01:29:11,954 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 286 predicate places. [2023-08-27 01:29:11,955 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 980 transitions, 18320 flow [2023-08-27 01:29:11,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 101.56) internal successors, (2539), 25 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:11,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:29:11,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:29:11,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-08-27 01:29:12,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:29:12,158 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:29:12,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:29:12,158 INFO L85 PathProgramCache]: Analyzing trace with hash -732490903, now seen corresponding path program 11 times [2023-08-27 01:29:12,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:29:12,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264455407] [2023-08-27 01:29:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:29:12,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:29:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:29:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:12,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:29:12,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264455407] [2023-08-27 01:29:12,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264455407] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:29:12,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337855970] [2023-08-27 01:29:12,564 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:29:12,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:29:12,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:29:12,565 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:29:12,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-27 01:29:12,675 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:29:12,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:29:12,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 01:29:12,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:29:12,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:29:12,774 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 01:29:12,818 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2023-08-27 01:29:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:29:12,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:29:12,944 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:29:12,944 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 56 treesize of output 44 [2023-08-27 01:29:12,947 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 18 treesize of output 16 [2023-08-27 01:29:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:29:13,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337855970] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:29:13,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:29:13,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 22 [2023-08-27 01:29:13,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923069896] [2023-08-27 01:29:13,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:29:13,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 01:29:13,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:29:13,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 01:29:13,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=450, Unknown=6, NotChecked=0, Total=552 [2023-08-27 01:29:13,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 333 [2023-08-27 01:29:13,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 980 transitions, 18320 flow. Second operand has 24 states, 24 states have (on average 107.41666666666667) internal successors, (2578), 24 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:13,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:29:13,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 333 [2023-08-27 01:29:13,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:29:16,127 INFO L124 PetriNetUnfolderBase]: 8135/11827 cut-off events. [2023-08-27 01:29:16,127 INFO L125 PetriNetUnfolderBase]: For 222607/223711 co-relation queries the response was YES. [2023-08-27 01:29:16,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92940 conditions, 11827 events. 8135/11827 cut-off events. For 222607/223711 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 69317 event pairs, 1580 based on Foata normal form. 664/11936 useless extension candidates. Maximal degree in co-relation 92817. Up to 10591 conditions per place. [2023-08-27 01:29:16,244 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 767 selfloop transitions, 226 changer transitions 1/1022 dead transitions. [2023-08-27 01:29:16,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1022 transitions, 20830 flow [2023-08-27 01:29:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:29:16,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:29:16,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 915 transitions. [2023-08-27 01:29:16,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34346846846846846 [2023-08-27 01:29:16,245 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 915 transitions. [2023-08-27 01:29:16,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 915 transitions. [2023-08-27 01:29:16,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:29:16,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 915 transitions. [2023-08-27 01:29:16,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.375) internal successors, (915), 8 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:16,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:16,248 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:16,248 INFO L175 Difference]: Start difference. First operand has 324 places, 980 transitions, 18320 flow. Second operand 8 states and 915 transitions. [2023-08-27 01:29:16,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 1022 transitions, 20830 flow [2023-08-27 01:29:17,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 1022 transitions, 20387 flow, removed 68 selfloop flow, removed 9 redundant places. [2023-08-27 01:29:17,313 INFO L231 Difference]: Finished difference. Result has 324 places, 993 transitions, 18735 flow [2023-08-27 01:29:17,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=17877, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=980, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=760, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18735, PETRI_PLACES=324, PETRI_TRANSITIONS=993} [2023-08-27 01:29:17,314 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 286 predicate places. [2023-08-27 01:29:17,314 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 993 transitions, 18735 flow [2023-08-27 01:29:17,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 107.41666666666667) internal successors, (2578), 24 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:17,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:29:17,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:29:17,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-27 01:29:17,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-27 01:29:17,515 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:29:17,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:29:17,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1235887027, now seen corresponding path program 12 times [2023-08-27 01:29:17,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:29:17,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298822814] [2023-08-27 01:29:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:29:17,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:29:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:29:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:17,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:29:17,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298822814] [2023-08-27 01:29:17,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298822814] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:29:17,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001697603] [2023-08-27 01:29:17,902 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:29:17,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:29:17,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:29:17,903 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:29:17,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-27 01:29:18,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:29:18,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:29:18,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 01:29:18,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:29:18,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:29:18,285 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 01:29:18,313 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 [2023-08-27 01:29:18,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:29:18,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:29:18,415 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:29:18,415 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 64 treesize of output 48 [2023-08-27 01:29:18,418 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 16 [2023-08-27 01:29:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:29:18,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001697603] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:29:18,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:29:18,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-08-27 01:29:18,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274535293] [2023-08-27 01:29:18,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:29:18,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 01:29:18,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:29:18,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 01:29:18,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=397, Unknown=3, NotChecked=0, Total=506 [2023-08-27 01:29:18,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 333 [2023-08-27 01:29:18,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 993 transitions, 18735 flow. Second operand has 23 states, 23 states have (on average 107.34782608695652) internal successors, (2469), 23 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:18,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:29:18,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 333 [2023-08-27 01:29:18,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:29:21,617 INFO L124 PetriNetUnfolderBase]: 8199/11926 cut-off events. [2023-08-27 01:29:21,617 INFO L125 PetriNetUnfolderBase]: For 241014/242339 co-relation queries the response was YES. [2023-08-27 01:29:21,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94979 conditions, 11926 events. 8199/11926 cut-off events. For 241014/242339 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 70242 event pairs, 1897 based on Foata normal form. 688/12062 useless extension candidates. Maximal degree in co-relation 94854. Up to 10767 conditions per place. [2023-08-27 01:29:21,742 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 746 selfloop transitions, 272 changer transitions 1/1047 dead transitions. [2023-08-27 01:29:21,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1047 transitions, 21359 flow [2023-08-27 01:29:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:29:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:29:21,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 917 transitions. [2023-08-27 01:29:21,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3442192192192192 [2023-08-27 01:29:21,744 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 917 transitions. [2023-08-27 01:29:21,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 917 transitions. [2023-08-27 01:29:21,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:29:21,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 917 transitions. [2023-08-27 01:29:21,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:21,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:21,746 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:21,747 INFO L175 Difference]: Start difference. First operand has 324 places, 993 transitions, 18735 flow. Second operand 8 states and 917 transitions. [2023-08-27 01:29:21,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 1047 transitions, 21359 flow [2023-08-27 01:29:23,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 1047 transitions, 20916 flow, removed 109 selfloop flow, removed 3 redundant places. [2023-08-27 01:29:23,041 INFO L231 Difference]: Finished difference. Result has 330 places, 1001 transitions, 19185 flow [2023-08-27 01:29:23,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=18302, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=993, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=721, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19185, PETRI_PLACES=330, PETRI_TRANSITIONS=1001} [2023-08-27 01:29:23,042 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 292 predicate places. [2023-08-27 01:29:23,042 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 1001 transitions, 19185 flow [2023-08-27 01:29:23,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 107.34782608695652) internal successors, (2469), 23 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:23,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:29:23,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:29:23,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-27 01:29:23,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:29:23,247 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:29:23,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:29:23,247 INFO L85 PathProgramCache]: Analyzing trace with hash 44630545, now seen corresponding path program 13 times [2023-08-27 01:29:23,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:29:23,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987525538] [2023-08-27 01:29:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:29:23,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:29:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:29:23,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:23,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:29:23,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987525538] [2023-08-27 01:29:23,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987525538] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:29:23,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498165871] [2023-08-27 01:29:23,764 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:29:23,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:29:23,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:29:23,765 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:29:23,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-27 01:29:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:29:23,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 01:29:23,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:29:23,938 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 01:29:23,977 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:29:24,009 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 01:29:24,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:29:24,120 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 01:29:24,151 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 10 [2023-08-27 01:29:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:24,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:29:24,283 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1760 (Array Int Int))) (= (mod (+ c_~sum3~0 c_~sum2~0 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* c_thread2Thread1of1ForFork1_~i~1 4)))) 4294967296) (mod (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1760) c_~A~0.base) c_~A~0.offset) c_~sum1~0) 4294967296))) is different from false [2023-08-27 01:29:24,288 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1760 (Array Int Int))) (= (mod (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) c_~sum3~0 c_~sum2~0) 4294967296) (mod (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1760) c_~A~0.base) c_~A~0.offset) c_~sum1~0) 4294967296))) is different from false [2023-08-27 01:29:24,296 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1760 (Array Int Int)) (v_ArrVal_1759 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1759))) (= (mod (+ c_~sum1~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1760) c_~A~0.base) c_~A~0.offset)) 4294967296) (mod (+ c_~sum3~0 (select (select .cse0 c_~A~0.base) c_~A~0.offset) c_~sum2~0) 4294967296)))) is different from false [2023-08-27 01:29:24,306 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1758 (Array Int Int)) (v_ArrVal_1760 (Array Int Int)) (v_ArrVal_1759 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1758) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1759))) (= (mod (+ (select (select .cse0 |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) c_~sum3~0 c_~sum2~0) 4294967296) (mod (+ c_~sum1~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1760) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) 4294967296)))) is different from false [2023-08-27 01:29:24,312 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:29:24,312 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 59 treesize of output 48 [2023-08-27 01:29:24,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 6838 treesize of output 6454 [2023-08-27 01:29:24,329 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 93 treesize of output 87 [2023-08-27 01:29:24,333 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 186 treesize of output 178 [2023-08-27 01:29:24,340 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 82 [2023-08-27 01:29:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 01:29:28,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498165871] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:29:28,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:29:28,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-08-27 01:29:28,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068562901] [2023-08-27 01:29:28,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:29:28,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 01:29:28,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:29:28,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 01:29:28,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=402, Unknown=8, NotChecked=180, Total=702 [2023-08-27 01:29:28,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 333 [2023-08-27 01:29:28,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 1001 transitions, 19185 flow. Second operand has 27 states, 27 states have (on average 107.03703703703704) internal successors, (2890), 27 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 01:29:28,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:29:28,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 333 [2023-08-27 01:29:28,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:29:31,202 INFO L124 PetriNetUnfolderBase]: 8280/12050 cut-off events. [2023-08-27 01:29:31,203 INFO L125 PetriNetUnfolderBase]: For 230768/232046 co-relation queries the response was YES. [2023-08-27 01:29:31,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95549 conditions, 12050 events. 8280/12050 cut-off events. For 230768/232046 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 71111 event pairs, 1874 based on Foata normal form. 660/12129 useless extension candidates. Maximal degree in co-relation 95421. Up to 11094 conditions per place. [2023-08-27 01:29:31,347 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 796 selfloop transitions, 212 changer transitions 1/1037 dead transitions. [2023-08-27 01:29:31,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1037 transitions, 21550 flow [2023-08-27 01:29:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:29:31,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:29:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 914 transitions. [2023-08-27 01:29:31,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3430930930930931 [2023-08-27 01:29:31,349 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 914 transitions. [2023-08-27 01:29:31,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 914 transitions. [2023-08-27 01:29:31,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:29:31,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 914 transitions. [2023-08-27 01:29:31,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.25) internal successors, (914), 8 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:31,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:31,351 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:31,351 INFO L175 Difference]: Start difference. First operand has 330 places, 1001 transitions, 19185 flow. Second operand 8 states and 914 transitions. [2023-08-27 01:29:31,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1037 transitions, 21550 flow [2023-08-27 01:29:32,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 1037 transitions, 20979 flow, removed 77 selfloop flow, removed 5 redundant places. [2023-08-27 01:29:32,817 INFO L231 Difference]: Finished difference. Result has 334 places, 1006 transitions, 19200 flow [2023-08-27 01:29:32,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=18620, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1001, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=789, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19200, PETRI_PLACES=334, PETRI_TRANSITIONS=1006} [2023-08-27 01:29:32,818 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 296 predicate places. [2023-08-27 01:29:32,818 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 1006 transitions, 19200 flow [2023-08-27 01:29:32,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 107.03703703703704) internal successors, (2890), 27 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 01:29:32,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:29:32,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:29:32,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-08-27 01:29:33,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-08-27 01:29:33,019 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:29:33,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:29:33,019 INFO L85 PathProgramCache]: Analyzing trace with hash 2010672929, now seen corresponding path program 1 times [2023-08-27 01:29:33,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:29:33,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888754934] [2023-08-27 01:29:33,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:29:33,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:29:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:29:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:33,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:29:33,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888754934] [2023-08-27 01:29:33,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888754934] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:29:33,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715464042] [2023-08-27 01:29:33,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:29:33,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:29:33,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:29:33,082 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:29:33,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-27 01:29:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:29:33,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 01:29:33,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:29:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:33,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:29:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:33,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715464042] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:29:33,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:29:33,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-27 01:29:33,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294670965] [2023-08-27 01:29:33,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:29:33,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 01:29:33,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:29:33,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 01:29:33,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-27 01:29:33,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:29:33,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 1006 transitions, 19200 flow. Second operand has 16 states, 16 states have (on average 125.25) internal successors, (2004), 16 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:33,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:29:33,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:29:33,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:29:36,779 INFO L124 PetriNetUnfolderBase]: 9902/14765 cut-off events. [2023-08-27 01:29:36,779 INFO L125 PetriNetUnfolderBase]: For 221325/221405 co-relation queries the response was YES. [2023-08-27 01:29:36,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107465 conditions, 14765 events. 9902/14765 cut-off events. For 221325/221405 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 91341 event pairs, 2665 based on Foata normal form. 310/14897 useless extension candidates. Maximal degree in co-relation 107335. Up to 7267 conditions per place. [2023-08-27 01:29:36,970 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 990 selfloop transitions, 278 changer transitions 15/1322 dead transitions. [2023-08-27 01:29:36,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1322 transitions, 25905 flow [2023-08-27 01:29:36,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:29:36,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:29:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1330 transitions. [2023-08-27 01:29:36,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993993993993994 [2023-08-27 01:29:36,972 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1330 transitions. [2023-08-27 01:29:36,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1330 transitions. [2023-08-27 01:29:36,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:29:36,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1330 transitions. [2023-08-27 01:29:36,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 133.0) internal successors, (1330), 10 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:36,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:36,975 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:36,975 INFO L175 Difference]: Start difference. First operand has 334 places, 1006 transitions, 19200 flow. Second operand 10 states and 1330 transitions. [2023-08-27 01:29:36,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1322 transitions, 25905 flow [2023-08-27 01:29:39,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 1322 transitions, 25362 flow, removed 70 selfloop flow, removed 5 redundant places. [2023-08-27 01:29:39,027 INFO L231 Difference]: Finished difference. Result has 342 places, 1089 transitions, 21376 flow [2023-08-27 01:29:39,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=18727, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=734, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21376, PETRI_PLACES=342, PETRI_TRANSITIONS=1089} [2023-08-27 01:29:39,028 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 304 predicate places. [2023-08-27 01:29:39,028 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 1089 transitions, 21376 flow [2023-08-27 01:29:39,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 125.25) internal successors, (2004), 16 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:39,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:29:39,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:29:39,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-08-27 01:29:39,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-08-27 01:29:39,229 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:29:39,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:29:39,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1132255377, now seen corresponding path program 2 times [2023-08-27 01:29:39,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:29:39,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137586843] [2023-08-27 01:29:39,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:29:39,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:29:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:29:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:29:39,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:29:39,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137586843] [2023-08-27 01:29:39,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137586843] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:29:39,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585965621] [2023-08-27 01:29:39,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:29:39,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:29:39,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:29:39,301 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:29:39,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-27 01:29:39,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:29:39,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:29:39,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 01:29:39,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:29:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:29:39,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:29:39,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:29:39,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585965621] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:29:39,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:29:39,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 01:29:39,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661070576] [2023-08-27 01:29:39,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:29:39,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:29:39,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:29:39,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:29:39,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-08-27 01:29:39,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:29:39,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 1089 transitions, 21376 flow. Second operand has 18 states, 18 states have (on average 125.05555555555556) internal successors, (2251), 18 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:39,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:29:39,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:29:39,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:29:43,613 INFO L124 PetriNetUnfolderBase]: 10634/15789 cut-off events. [2023-08-27 01:29:43,613 INFO L125 PetriNetUnfolderBase]: For 273966/274044 co-relation queries the response was YES. [2023-08-27 01:29:43,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121547 conditions, 15789 events. 10634/15789 cut-off events. For 273966/274044 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 97570 event pairs, 2968 based on Foata normal form. 286/16054 useless extension candidates. Maximal degree in co-relation 121413. Up to 7267 conditions per place. [2023-08-27 01:29:43,810 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 975 selfloop transitions, 343 changer transitions 29/1386 dead transitions. [2023-08-27 01:29:43,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 1386 transitions, 27595 flow [2023-08-27 01:29:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 01:29:43,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 01:29:43,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1717 transitions. [2023-08-27 01:29:43,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3966273966273966 [2023-08-27 01:29:43,814 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1717 transitions. [2023-08-27 01:29:43,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1717 transitions. [2023-08-27 01:29:43,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:29:43,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1717 transitions. [2023-08-27 01:29:43,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 132.07692307692307) internal successors, (1717), 13 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:43,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 333.0) internal successors, (4662), 14 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:43,818 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 333.0) internal successors, (4662), 14 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:43,818 INFO L175 Difference]: Start difference. First operand has 342 places, 1089 transitions, 21376 flow. Second operand 13 states and 1717 transitions. [2023-08-27 01:29:43,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 1386 transitions, 27595 flow [2023-08-27 01:29:46,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1386 transitions, 27538 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-27 01:29:46,707 INFO L231 Difference]: Finished difference. Result has 356 places, 1118 transitions, 22694 flow [2023-08-27 01:29:46,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=21227, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1082, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=756, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=22694, PETRI_PLACES=356, PETRI_TRANSITIONS=1118} [2023-08-27 01:29:46,708 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 318 predicate places. [2023-08-27 01:29:46,708 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 1118 transitions, 22694 flow [2023-08-27 01:29:46,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 125.05555555555556) internal successors, (2251), 18 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:46,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:29:46,709 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:29:46,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-27 01:29:46,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-08-27 01:29:46,913 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:29:46,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:29:46,913 INFO L85 PathProgramCache]: Analyzing trace with hash 264169288, now seen corresponding path program 14 times [2023-08-27 01:29:46,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:29:46,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809616210] [2023-08-27 01:29:46,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:29:46,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:29:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:29:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:46,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:29:46,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809616210] [2023-08-27 01:29:46,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809616210] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:29:46,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075188726] [2023-08-27 01:29:46,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:29:46,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:29:46,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:29:46,986 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:29:46,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-27 01:29:47,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:29:47,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:29:47,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 01:29:47,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:29:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:47,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:29:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:47,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075188726] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:29:47,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:29:47,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-27 01:29:47,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570921479] [2023-08-27 01:29:47,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:29:47,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 01:29:47,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:29:47,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 01:29:47,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-27 01:29:47,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 333 [2023-08-27 01:29:47,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 1118 transitions, 22694 flow. Second operand has 15 states, 15 states have (on average 129.66666666666666) internal successors, (1945), 15 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:47,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:29:47,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 333 [2023-08-27 01:29:47,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:29:51,114 INFO L124 PetriNetUnfolderBase]: 9165/13930 cut-off events. [2023-08-27 01:29:51,115 INFO L125 PetriNetUnfolderBase]: For 258582/258661 co-relation queries the response was YES. [2023-08-27 01:29:51,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112361 conditions, 13930 events. 9165/13930 cut-off events. For 258582/258661 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 88479 event pairs, 2964 based on Foata normal form. 533/14445 useless extension candidates. Maximal degree in co-relation 112222. Up to 7267 conditions per place. [2023-08-27 01:29:51,266 INFO L140 encePairwiseOnDemand]: 327/333 looper letters, 889 selfloop transitions, 183 changer transitions 133/1242 dead transitions. [2023-08-27 01:29:51,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1242 transitions, 26821 flow [2023-08-27 01:29:51,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:29:51,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:29:51,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 957 transitions. [2023-08-27 01:29:51,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055341055341055 [2023-08-27 01:29:51,267 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 957 transitions. [2023-08-27 01:29:51,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 957 transitions. [2023-08-27 01:29:51,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:29:51,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 957 transitions. [2023-08-27 01:29:51,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.71428571428572) internal successors, (957), 7 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:51,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:51,269 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:51,269 INFO L175 Difference]: Start difference. First operand has 356 places, 1118 transitions, 22694 flow. Second operand 7 states and 957 transitions. [2023-08-27 01:29:51,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1242 transitions, 26821 flow [2023-08-27 01:29:53,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1242 transitions, 26225 flow, removed 115 selfloop flow, removed 5 redundant places. [2023-08-27 01:29:53,580 INFO L231 Difference]: Finished difference. Result has 358 places, 987 transitions, 19397 flow [2023-08-27 01:29:53,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=21920, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=919, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19397, PETRI_PLACES=358, PETRI_TRANSITIONS=987} [2023-08-27 01:29:53,581 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 320 predicate places. [2023-08-27 01:29:53,581 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 987 transitions, 19397 flow [2023-08-27 01:29:53,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 129.66666666666666) internal successors, (1945), 15 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:53,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:29:53,581 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:29:53,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-08-27 01:29:53,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-08-27 01:29:53,786 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:29:53,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:29:53,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2090272734, now seen corresponding path program 9 times [2023-08-27 01:29:53,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:29:53,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578636793] [2023-08-27 01:29:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:29:53,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:29:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:29:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:29:53,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:29:53,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578636793] [2023-08-27 01:29:53,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578636793] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:29:53,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669605636] [2023-08-27 01:29:53,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:29:53,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:29:53,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:29:53,850 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:29:53,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-27 01:29:54,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:29:54,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:29:54,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:29:54,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:29:54,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:29:54,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:29:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:29:54,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669605636] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:29:54,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:29:54,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-27 01:29:54,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495420493] [2023-08-27 01:29:54,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:29:54,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 01:29:54,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:29:54,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 01:29:54,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-27 01:29:54,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 333 [2023-08-27 01:29:54,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 987 transitions, 19397 flow. Second operand has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:54,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:29:54,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 333 [2023-08-27 01:29:54,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:29:56,335 INFO L124 PetriNetUnfolderBase]: 5773/8611 cut-off events. [2023-08-27 01:29:56,335 INFO L125 PetriNetUnfolderBase]: For 203278/204548 co-relation queries the response was YES. [2023-08-27 01:29:56,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74542 conditions, 8611 events. 5773/8611 cut-off events. For 203278/204548 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 50550 event pairs, 1456 based on Foata normal form. 1020/9261 useless extension candidates. Maximal degree in co-relation 74402. Up to 4313 conditions per place. [2023-08-27 01:29:56,426 INFO L140 encePairwiseOnDemand]: 327/333 looper letters, 781 selfloop transitions, 133 changer transitions 1/986 dead transitions. [2023-08-27 01:29:56,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 986 transitions, 20705 flow [2023-08-27 01:29:56,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:29:56,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:29:56,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1121 transitions. [2023-08-27 01:29:56,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207957957957958 [2023-08-27 01:29:56,427 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1121 transitions. [2023-08-27 01:29:56,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1121 transitions. [2023-08-27 01:29:56,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:29:56,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1121 transitions. [2023-08-27 01:29:56,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 140.125) internal successors, (1121), 8 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:56,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:56,430 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 333.0) internal successors, (2997), 9 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:56,430 INFO L175 Difference]: Start difference. First operand has 358 places, 987 transitions, 19397 flow. Second operand 8 states and 1121 transitions. [2023-08-27 01:29:56,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 986 transitions, 20705 flow [2023-08-27 01:29:57,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 986 transitions, 19847 flow, removed 186 selfloop flow, removed 14 redundant places. [2023-08-27 01:29:57,298 INFO L231 Difference]: Finished difference. Result has 346 places, 893 transitions, 17059 flow [2023-08-27 01:29:57,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=16793, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=760, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17059, PETRI_PLACES=346, PETRI_TRANSITIONS=893} [2023-08-27 01:29:57,299 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 308 predicate places. [2023-08-27 01:29:57,299 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 893 transitions, 17059 flow [2023-08-27 01:29:57,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:57,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:29:57,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:29:57,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-08-27 01:29:57,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-08-27 01:29:57,500 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:29:57,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:29:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash -883290637, now seen corresponding path program 3 times [2023-08-27 01:29:57,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:29:57,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327826447] [2023-08-27 01:29:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:29:57,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:29:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:29:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:57,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:29:57,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327826447] [2023-08-27 01:29:57,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327826447] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:29:57,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692399352] [2023-08-27 01:29:57,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:29:57,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:29:57,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:29:57,571 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:29:57,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-27 01:29:57,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:29:57,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:29:57,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 01:29:57,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:29:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:57,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:29:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:29:57,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692399352] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:29:57,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:29:57,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 01:29:57,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426716970] [2023-08-27 01:29:57,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:29:57,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 01:29:57,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:29:57,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 01:29:57,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-08-27 01:29:57,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:29:57,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 893 transitions, 17059 flow. Second operand has 17 states, 17 states have (on average 125.41176470588235) internal successors, (2132), 17 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:29:57,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:29:57,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:29:57,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:00,036 INFO L124 PetriNetUnfolderBase]: 5755/8730 cut-off events. [2023-08-27 01:30:00,036 INFO L125 PetriNetUnfolderBase]: For 153779/153852 co-relation queries the response was YES. [2023-08-27 01:30:00,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71211 conditions, 8730 events. 5755/8730 cut-off events. For 153779/153852 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 51354 event pairs, 1590 based on Foata normal form. 203/8919 useless extension candidates. Maximal degree in co-relation 71078. Up to 4106 conditions per place. [2023-08-27 01:30:00,126 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 789 selfloop transitions, 169 changer transitions 45/1040 dead transitions. [2023-08-27 01:30:00,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 1040 transitions, 20842 flow [2023-08-27 01:30:00,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:30:00,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:30:00,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1319 transitions. [2023-08-27 01:30:00,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3960960960960961 [2023-08-27 01:30:00,128 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1319 transitions. [2023-08-27 01:30:00,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1319 transitions. [2023-08-27 01:30:00,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:00,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1319 transitions. [2023-08-27 01:30:00,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.9) internal successors, (1319), 10 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:00,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:00,130 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:00,130 INFO L175 Difference]: Start difference. First operand has 346 places, 893 transitions, 17059 flow. Second operand 10 states and 1319 transitions. [2023-08-27 01:30:00,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 1040 transitions, 20842 flow [2023-08-27 01:30:01,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1040 transitions, 20637 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 01:30:01,102 INFO L231 Difference]: Finished difference. Result has 348 places, 853 transitions, 16384 flow [2023-08-27 01:30:01,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=16627, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=876, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16384, PETRI_PLACES=348, PETRI_TRANSITIONS=853} [2023-08-27 01:30:01,103 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 310 predicate places. [2023-08-27 01:30:01,103 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 853 transitions, 16384 flow [2023-08-27 01:30:01,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 125.41176470588235) internal successors, (2132), 17 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:01,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:01,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:01,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-08-27 01:30:01,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-08-27 01:30:01,308 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:01,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:01,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1988611011, now seen corresponding path program 4 times [2023-08-27 01:30:01,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:01,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648527103] [2023-08-27 01:30:01,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:01,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:01,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:01,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648527103] [2023-08-27 01:30:01,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648527103] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:01,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524387194] [2023-08-27 01:30:01,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:30:01,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:01,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:01,371 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:01,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-08-27 01:30:01,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:30:01,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:01,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 01:30:01,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:01,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:01,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524387194] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:01,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:01,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-27 01:30:01,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861700790] [2023-08-27 01:30:01,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:01,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 01:30:01,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:01,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 01:30:01,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-27 01:30:01,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:30:01,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 853 transitions, 16384 flow. Second operand has 16 states, 16 states have (on average 125.3125) internal successors, (2005), 16 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:01,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:01,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:30:01,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:03,737 INFO L124 PetriNetUnfolderBase]: 5785/8730 cut-off events. [2023-08-27 01:30:03,737 INFO L125 PetriNetUnfolderBase]: For 169271/169349 co-relation queries the response was YES. [2023-08-27 01:30:03,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73027 conditions, 8730 events. 5785/8730 cut-off events. For 169271/169349 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 51019 event pairs, 1240 based on Foata normal form. 200/8918 useless extension candidates. Maximal degree in co-relation 72893. Up to 4106 conditions per place. [2023-08-27 01:30:03,825 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 783 selfloop transitions, 142 changer transitions 43/1005 dead transitions. [2023-08-27 01:30:03,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 1005 transitions, 20257 flow [2023-08-27 01:30:03,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:30:03,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:30:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1324 transitions. [2023-08-27 01:30:03,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975975975975976 [2023-08-27 01:30:03,827 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1324 transitions. [2023-08-27 01:30:03,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1324 transitions. [2023-08-27 01:30:03,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:03,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1324 transitions. [2023-08-27 01:30:03,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 132.4) internal successors, (1324), 10 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:03,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:03,830 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:03,830 INFO L175 Difference]: Start difference. First operand has 348 places, 853 transitions, 16384 flow. Second operand 10 states and 1324 transitions. [2023-08-27 01:30:03,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 1005 transitions, 20257 flow [2023-08-27 01:30:04,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 1005 transitions, 19755 flow, removed 57 selfloop flow, removed 9 redundant places. [2023-08-27 01:30:04,822 INFO L231 Difference]: Finished difference. Result has 349 places, 870 transitions, 17013 flow [2023-08-27 01:30:04,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=15891, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17013, PETRI_PLACES=349, PETRI_TRANSITIONS=870} [2023-08-27 01:30:04,823 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 311 predicate places. [2023-08-27 01:30:04,823 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 870 transitions, 17013 flow [2023-08-27 01:30:04,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 125.3125) internal successors, (2005), 16 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:04,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:04,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:04,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-08-27 01:30:05,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-08-27 01:30:05,024 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:05,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:05,024 INFO L85 PathProgramCache]: Analyzing trace with hash -125166167, now seen corresponding path program 5 times [2023-08-27 01:30:05,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:05,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670508770] [2023-08-27 01:30:05,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:05,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:05,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:05,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670508770] [2023-08-27 01:30:05,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670508770] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:05,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620807603] [2023-08-27 01:30:05,088 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:30:05,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:05,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:05,089 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:05,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-08-27 01:30:05,227 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:30:05,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:05,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 01:30:05,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:05,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:05,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:05,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620807603] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:05,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:05,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 01:30:05,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047648624] [2023-08-27 01:30:05,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:05,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 01:30:05,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:05,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 01:30:05,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-08-27 01:30:05,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:30:05,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 870 transitions, 17013 flow. Second operand has 17 states, 17 states have (on average 125.29411764705883) internal successors, (2130), 17 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:05,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:05,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:30:05,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:07,380 INFO L124 PetriNetUnfolderBase]: 5356/8136 cut-off events. [2023-08-27 01:30:07,380 INFO L125 PetriNetUnfolderBase]: For 163198/163263 co-relation queries the response was YES. [2023-08-27 01:30:07,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69082 conditions, 8136 events. 5356/8136 cut-off events. For 163198/163263 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 47572 event pairs, 1392 based on Foata normal form. 188/8313 useless extension candidates. Maximal degree in co-relation 68946. Up to 4106 conditions per place. [2023-08-27 01:30:07,471 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 779 selfloop transitions, 118 changer transitions 38/971 dead transitions. [2023-08-27 01:30:07,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 971 transitions, 19999 flow [2023-08-27 01:30:07,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:30:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:30:07,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1188 transitions. [2023-08-27 01:30:07,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3963963963963964 [2023-08-27 01:30:07,473 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1188 transitions. [2023-08-27 01:30:07,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1188 transitions. [2023-08-27 01:30:07,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:07,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1188 transitions. [2023-08-27 01:30:07,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:07,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 333.0) internal successors, (3330), 10 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:07,476 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 333.0) internal successors, (3330), 10 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:07,476 INFO L175 Difference]: Start difference. First operand has 349 places, 870 transitions, 17013 flow. Second operand 9 states and 1188 transitions. [2023-08-27 01:30:07,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 971 transitions, 19999 flow [2023-08-27 01:30:08,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 971 transitions, 19792 flow, removed 101 selfloop flow, removed 2 redundant places. [2023-08-27 01:30:08,807 INFO L231 Difference]: Finished difference. Result has 358 places, 857 transitions, 16787 flow [2023-08-27 01:30:08,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=16587, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=858, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=748, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16787, PETRI_PLACES=358, PETRI_TRANSITIONS=857} [2023-08-27 01:30:08,807 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 320 predicate places. [2023-08-27 01:30:08,808 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 857 transitions, 16787 flow [2023-08-27 01:30:08,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 125.29411764705883) internal successors, (2130), 17 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:08,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:08,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:08,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-08-27 01:30:09,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:09,013 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:09,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:09,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1091702233, now seen corresponding path program 6 times [2023-08-27 01:30:09,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:09,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999593789] [2023-08-27 01:30:09,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:09,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:30:09,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:09,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999593789] [2023-08-27 01:30:09,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999593789] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:09,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582638654] [2023-08-27 01:30:09,085 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:30:09,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:09,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:09,086 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:09,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-08-27 01:30:09,269 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-27 01:30:09,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:09,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 01:30:09,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:30:09,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:30:09,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582638654] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:09,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:09,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 01:30:09,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383360874] [2023-08-27 01:30:09,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:09,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:30:09,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:09,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:30:09,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-08-27 01:30:09,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:30:09,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 857 transitions, 16787 flow. Second operand has 18 states, 18 states have (on average 125.05555555555556) internal successors, (2251), 18 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:09,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:09,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:30:09,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:11,334 INFO L124 PetriNetUnfolderBase]: 4972/7534 cut-off events. [2023-08-27 01:30:11,334 INFO L125 PetriNetUnfolderBase]: For 142378/142441 co-relation queries the response was YES. [2023-08-27 01:30:11,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63225 conditions, 7534 events. 4972/7534 cut-off events. For 142378/142441 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 43139 event pairs, 1271 based on Foata normal form. 180/7703 useless extension candidates. Maximal degree in co-relation 63085. Up to 4106 conditions per place. [2023-08-27 01:30:11,416 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 739 selfloop transitions, 114 changer transitions 26/913 dead transitions. [2023-08-27 01:30:11,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 913 transitions, 18462 flow [2023-08-27 01:30:11,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:30:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:30:11,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1317 transitions. [2023-08-27 01:30:11,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3954954954954955 [2023-08-27 01:30:11,418 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1317 transitions. [2023-08-27 01:30:11,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1317 transitions. [2023-08-27 01:30:11,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:11,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1317 transitions. [2023-08-27 01:30:11,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.7) internal successors, (1317), 10 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:11,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:11,421 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:11,421 INFO L175 Difference]: Start difference. First operand has 358 places, 857 transitions, 16787 flow. Second operand 10 states and 1317 transitions. [2023-08-27 01:30:11,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 913 transitions, 18462 flow [2023-08-27 01:30:12,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 913 transitions, 18198 flow, removed 78 selfloop flow, removed 9 redundant places. [2023-08-27 01:30:12,255 INFO L231 Difference]: Finished difference. Result has 356 places, 803 transitions, 15676 flow [2023-08-27 01:30:12,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=15298, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15676, PETRI_PLACES=356, PETRI_TRANSITIONS=803} [2023-08-27 01:30:12,256 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 318 predicate places. [2023-08-27 01:30:12,256 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 803 transitions, 15676 flow [2023-08-27 01:30:12,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 125.05555555555556) internal successors, (2251), 18 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:12,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:12,257 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:12,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-08-27 01:30:12,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-08-27 01:30:12,457 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:12,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:12,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1862242550, now seen corresponding path program 10 times [2023-08-27 01:30:12,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:12,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002319349] [2023-08-27 01:30:12,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:12,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:30:12,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:12,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002319349] [2023-08-27 01:30:12,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002319349] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:12,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604551563] [2023-08-27 01:30:12,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:30:12,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:12,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:12,525 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:12,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-08-27 01:30:12,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:30:12,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:12,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 01:30:12,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:30:12,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:30:12,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604551563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:12,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:12,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-27 01:30:12,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992617166] [2023-08-27 01:30:12,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:12,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 01:30:12,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:12,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 01:30:12,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-08-27 01:30:12,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 333 [2023-08-27 01:30:12,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 803 transitions, 15676 flow. Second operand has 14 states, 14 states have (on average 130.78571428571428) internal successors, (1831), 14 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:12,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:12,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 333 [2023-08-27 01:30:12,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:14,120 INFO L124 PetriNetUnfolderBase]: 3852/5884 cut-off events. [2023-08-27 01:30:14,121 INFO L125 PetriNetUnfolderBase]: For 116593/117097 co-relation queries the response was YES. [2023-08-27 01:30:14,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51232 conditions, 5884 events. 3852/5884 cut-off events. For 116593/117097 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 33648 event pairs, 1030 based on Foata normal form. 489/6335 useless extension candidates. Maximal degree in co-relation 51095. Up to 3977 conditions per place. [2023-08-27 01:30:14,189 INFO L140 encePairwiseOnDemand]: 327/333 looper letters, 432 selfloop transitions, 3 changer transitions 272/746 dead transitions. [2023-08-27 01:30:14,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 746 transitions, 16032 flow [2023-08-27 01:30:14,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:30:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:30:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 955 transitions. [2023-08-27 01:30:14,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096954096954097 [2023-08-27 01:30:14,190 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 955 transitions. [2023-08-27 01:30:14,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 955 transitions. [2023-08-27 01:30:14,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:14,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 955 transitions. [2023-08-27 01:30:14,191 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 01:30:14,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:14,192 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:14,192 INFO L175 Difference]: Start difference. First operand has 356 places, 803 transitions, 15676 flow. Second operand 7 states and 955 transitions. [2023-08-27 01:30:14,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 746 transitions, 16032 flow [2023-08-27 01:30:14,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 746 transitions, 15629 flow, removed 80 selfloop flow, removed 19 redundant places. [2023-08-27 01:30:14,904 INFO L231 Difference]: Finished difference. Result has 336 places, 474 transitions, 8348 flow [2023-08-27 01:30:14,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=14175, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8348, PETRI_PLACES=336, PETRI_TRANSITIONS=474} [2023-08-27 01:30:14,905 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 298 predicate places. [2023-08-27 01:30:14,905 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 474 transitions, 8348 flow [2023-08-27 01:30:14,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 130.78571428571428) internal successors, (1831), 14 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:14,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:14,905 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:14,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-08-27 01:30:15,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:15,110 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:15,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:15,110 INFO L85 PathProgramCache]: Analyzing trace with hash -955284673, now seen corresponding path program 11 times [2023-08-27 01:30:15,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:15,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207811530] [2023-08-27 01:30:15,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:15,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:15,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:15,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:15,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207811530] [2023-08-27 01:30:15,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207811530] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:15,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659706410] [2023-08-27 01:30:15,183 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:30:15,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:15,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:15,183 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:15,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-08-27 01:30:15,316 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:30:15,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:15,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:30:15,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:15,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:15,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659706410] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:15,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:15,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-27 01:30:15,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704177503] [2023-08-27 01:30:15,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:15,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:30:15,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:15,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:30:15,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-08-27 01:30:15,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:30:15,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 474 transitions, 8348 flow. Second operand has 18 states, 18 states have (on average 125.44444444444444) internal successors, (2258), 18 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:15,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:15,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:30:15,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:16,273 INFO L124 PetriNetUnfolderBase]: 2916/4145 cut-off events. [2023-08-27 01:30:16,273 INFO L125 PetriNetUnfolderBase]: For 64650/64672 co-relation queries the response was YES. [2023-08-27 01:30:16,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33489 conditions, 4145 events. 2916/4145 cut-off events. For 64650/64672 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 18872 event pairs, 826 based on Foata normal form. 52/4194 useless extension candidates. Maximal degree in co-relation 33371. Up to 2787 conditions per place. [2023-08-27 01:30:16,320 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 374 selfloop transitions, 173 changer transitions 0/564 dead transitions. [2023-08-27 01:30:16,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 564 transitions, 10324 flow [2023-08-27 01:30:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:30:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:30:16,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1298 transitions. [2023-08-27 01:30:16,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897897897897898 [2023-08-27 01:30:16,322 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1298 transitions. [2023-08-27 01:30:16,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1298 transitions. [2023-08-27 01:30:16,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:16,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1298 transitions. [2023-08-27 01:30:16,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 129.8) internal successors, (1298), 10 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:16,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:16,324 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:16,324 INFO L175 Difference]: Start difference. First operand has 336 places, 474 transitions, 8348 flow. Second operand 10 states and 1298 transitions. [2023-08-27 01:30:16,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 564 transitions, 10324 flow [2023-08-27 01:30:16,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 564 transitions, 9639 flow, removed 280 selfloop flow, removed 26 redundant places. [2023-08-27 01:30:16,748 INFO L231 Difference]: Finished difference. Result has 249 places, 470 transitions, 8094 flow [2023-08-27 01:30:16,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=7688, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8094, PETRI_PLACES=249, PETRI_TRANSITIONS=470} [2023-08-27 01:30:16,748 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 211 predicate places. [2023-08-27 01:30:16,749 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 470 transitions, 8094 flow [2023-08-27 01:30:16,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 125.44444444444444) internal successors, (2258), 18 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:16,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:16,749 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:16,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-08-27 01:30:16,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:16,949 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:16,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:16,950 INFO L85 PathProgramCache]: Analyzing trace with hash 786331210, now seen corresponding path program 15 times [2023-08-27 01:30:16,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:16,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680256319] [2023-08-27 01:30:16,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:16,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:17,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:17,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680256319] [2023-08-27 01:30:17,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680256319] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:17,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001543831] [2023-08-27 01:30:17,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:30:17,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:17,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:17,021 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:17,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-08-27 01:30:17,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:30:17,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:17,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:30:17,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:17,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:17,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001543831] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:17,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:17,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-27 01:30:17,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032810220] [2023-08-27 01:30:17,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:17,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:30:17,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:30:17,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-08-27 01:30:17,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:30:17,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 470 transitions, 8094 flow. Second operand has 18 states, 18 states have (on average 125.05555555555556) internal successors, (2251), 18 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:17,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:17,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:30:17,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:18,038 INFO L124 PetriNetUnfolderBase]: 3051/4388 cut-off events. [2023-08-27 01:30:18,038 INFO L125 PetriNetUnfolderBase]: For 59835/59857 co-relation queries the response was YES. [2023-08-27 01:30:18,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33199 conditions, 4388 events. 3051/4388 cut-off events. For 59835/59857 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 20780 event pairs, 500 based on Foata normal form. 70/4456 useless extension candidates. Maximal degree in co-relation 33102. Up to 1530 conditions per place. [2023-08-27 01:30:18,082 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 434 selfloop transitions, 209 changer transitions 0/660 dead transitions. [2023-08-27 01:30:18,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 660 transitions, 11632 flow [2023-08-27 01:30:18,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:30:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:30:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1302 transitions. [2023-08-27 01:30:18,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390990990990991 [2023-08-27 01:30:18,084 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1302 transitions. [2023-08-27 01:30:18,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1302 transitions. [2023-08-27 01:30:18,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:18,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1302 transitions. [2023-08-27 01:30:18,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 130.2) internal successors, (1302), 10 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:18,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:18,087 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:18,087 INFO L175 Difference]: Start difference. First operand has 249 places, 470 transitions, 8094 flow. Second operand 10 states and 1302 transitions. [2023-08-27 01:30:18,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 660 transitions, 11632 flow [2023-08-27 01:30:18,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 660 transitions, 11160 flow, removed 33 selfloop flow, removed 9 redundant places. [2023-08-27 01:30:18,330 INFO L231 Difference]: Finished difference. Result has 251 places, 493 transitions, 8606 flow [2023-08-27 01:30:18,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=7642, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8606, PETRI_PLACES=251, PETRI_TRANSITIONS=493} [2023-08-27 01:30:18,330 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 213 predicate places. [2023-08-27 01:30:18,330 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 493 transitions, 8606 flow [2023-08-27 01:30:18,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 125.05555555555556) internal successors, (2251), 18 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:18,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:18,331 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:18,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-08-27 01:30:18,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-08-27 01:30:18,531 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:18,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:18,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1702976252, now seen corresponding path program 16 times [2023-08-27 01:30:18,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:18,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614930276] [2023-08-27 01:30:18,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:18,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:18,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:18,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614930276] [2023-08-27 01:30:18,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614930276] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:18,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556303821] [2023-08-27 01:30:18,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:30:18,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:18,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:18,605 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:18,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-08-27 01:30:18,741 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:30:18,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:18,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:30:18,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:18,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:18,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556303821] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:18,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:18,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-27 01:30:18,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577184104] [2023-08-27 01:30:18,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:18,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:30:18,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:18,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:30:18,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:30:18,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:30:18,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 493 transitions, 8606 flow. Second operand has 19 states, 19 states have (on average 125.0) internal successors, (2375), 19 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:18,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:18,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:30:18,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:19,814 INFO L124 PetriNetUnfolderBase]: 3440/4971 cut-off events. [2023-08-27 01:30:19,814 INFO L125 PetriNetUnfolderBase]: For 75315/75350 co-relation queries the response was YES. [2023-08-27 01:30:19,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38263 conditions, 4971 events. 3440/4971 cut-off events. For 75315/75350 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 24267 event pairs, 668 based on Foata normal form. 97/5061 useless extension candidates. Maximal degree in co-relation 38165. Up to 2961 conditions per place. [2023-08-27 01:30:19,864 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 501 selfloop transitions, 337 changer transitions 0/855 dead transitions. [2023-08-27 01:30:19,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 855 transitions, 14578 flow [2023-08-27 01:30:19,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 01:30:19,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 01:30:19,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2082 transitions. [2023-08-27 01:30:19,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39076576576576577 [2023-08-27 01:30:19,867 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2082 transitions. [2023-08-27 01:30:19,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2082 transitions. [2023-08-27 01:30:19,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:19,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2082 transitions. [2023-08-27 01:30:19,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 130.125) internal successors, (2082), 16 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:19,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 333.0) internal successors, (5661), 17 states have internal predecessors, (5661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:19,871 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 333.0) internal successors, (5661), 17 states have internal predecessors, (5661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:19,871 INFO L175 Difference]: Start difference. First operand has 251 places, 493 transitions, 8606 flow. Second operand 16 states and 2082 transitions. [2023-08-27 01:30:19,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 855 transitions, 14578 flow [2023-08-27 01:30:20,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 855 transitions, 14067 flow, removed 46 selfloop flow, removed 7 redundant places. [2023-08-27 01:30:20,211 INFO L231 Difference]: Finished difference. Result has 263 places, 611 transitions, 10815 flow [2023-08-27 01:30:20,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=8208, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10815, PETRI_PLACES=263, PETRI_TRANSITIONS=611} [2023-08-27 01:30:20,212 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 225 predicate places. [2023-08-27 01:30:20,212 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 611 transitions, 10815 flow [2023-08-27 01:30:20,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 125.0) internal successors, (2375), 19 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:20,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:20,212 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:20,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-08-27 01:30:20,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-08-27 01:30:20,413 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:20,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:20,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1827959562, now seen corresponding path program 17 times [2023-08-27 01:30:20,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:20,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752056963] [2023-08-27 01:30:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:20,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:20,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:20,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752056963] [2023-08-27 01:30:20,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752056963] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:20,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453527935] [2023-08-27 01:30:20,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:30:20,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:20,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:20,486 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:20,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-08-27 01:30:20,622 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 01:30:20,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:20,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:30:20,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:20,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:20,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453527935] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:20,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:20,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2023-08-27 01:30:20,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006306522] [2023-08-27 01:30:20,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:20,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:30:20,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:20,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:30:20,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-08-27 01:30:20,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 333 [2023-08-27 01:30:20,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 611 transitions, 10815 flow. Second operand has 18 states, 18 states have (on average 120.27777777777777) internal successors, (2165), 18 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:20,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:20,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 333 [2023-08-27 01:30:20,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:22,220 INFO L124 PetriNetUnfolderBase]: 3689/5323 cut-off events. [2023-08-27 01:30:22,221 INFO L125 PetriNetUnfolderBase]: For 92489/92489 co-relation queries the response was YES. [2023-08-27 01:30:22,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43761 conditions, 5323 events. 3689/5323 cut-off events. For 92489/92489 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 26001 event pairs, 298 based on Foata normal form. 52/5375 useless extension candidates. Maximal degree in co-relation 43659. Up to 1546 conditions per place. [2023-08-27 01:30:22,280 INFO L140 encePairwiseOnDemand]: 321/333 looper letters, 564 selfloop transitions, 496 changer transitions 0/1060 dead transitions. [2023-08-27 01:30:22,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 1060 transitions, 18528 flow [2023-08-27 01:30:22,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-27 01:30:22,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-27 01:30:22,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4722 transitions. [2023-08-27 01:30:22,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37316263632053104 [2023-08-27 01:30:22,284 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4722 transitions. [2023-08-27 01:30:22,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4722 transitions. [2023-08-27 01:30:22,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:22,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4722 transitions. [2023-08-27 01:30:22,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 124.26315789473684) internal successors, (4722), 38 states have internal predecessors, (4722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:22,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 333.0) internal successors, (12987), 39 states have internal predecessors, (12987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:22,292 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 333.0) internal successors, (12987), 39 states have internal predecessors, (12987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:22,292 INFO L175 Difference]: Start difference. First operand has 263 places, 611 transitions, 10815 flow. Second operand 38 states and 4722 transitions. [2023-08-27 01:30:22,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 1060 transitions, 18528 flow [2023-08-27 01:30:22,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 1060 transitions, 17388 flow, removed 319 selfloop flow, removed 8 redundant places. [2023-08-27 01:30:22,853 INFO L231 Difference]: Finished difference. Result has 300 places, 807 transitions, 14438 flow [2023-08-27 01:30:22,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=9932, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14438, PETRI_PLACES=300, PETRI_TRANSITIONS=807} [2023-08-27 01:30:22,854 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 262 predicate places. [2023-08-27 01:30:22,854 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 807 transitions, 14438 flow [2023-08-27 01:30:22,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 120.27777777777777) internal successors, (2165), 18 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:22,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:22,854 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:22,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-08-27 01:30:23,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-08-27 01:30:23,055 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:23,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:23,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1378803294, now seen corresponding path program 18 times [2023-08-27 01:30:23,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:23,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576493521] [2023-08-27 01:30:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:23,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:23,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:23,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576493521] [2023-08-27 01:30:23,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576493521] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:23,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787957563] [2023-08-27 01:30:23,129 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:30:23,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:23,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:23,129 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:23,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-08-27 01:30:23,277 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:30:23,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:23,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:30:23,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:23,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:23,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787957563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:23,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:23,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-27 01:30:23,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976209154] [2023-08-27 01:30:23,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:23,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:30:23,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:23,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:30:23,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:30:23,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:30:23,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 807 transitions, 14438 flow. Second operand has 19 states, 19 states have (on average 125.42105263157895) internal successors, (2383), 19 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:23,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:23,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:30:23,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:24,531 INFO L124 PetriNetUnfolderBase]: 3563/5140 cut-off events. [2023-08-27 01:30:24,531 INFO L125 PetriNetUnfolderBase]: For 90257/90283 co-relation queries the response was YES. [2023-08-27 01:30:24,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42799 conditions, 5140 events. 3563/5140 cut-off events. For 90257/90283 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 25079 event pairs, 647 based on Foata normal form. 88/5225 useless extension candidates. Maximal degree in co-relation 42689. Up to 3087 conditions per place. [2023-08-27 01:30:24,585 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 568 selfloop transitions, 409 changer transitions 0/1011 dead transitions. [2023-08-27 01:30:24,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1011 transitions, 18644 flow [2023-08-27 01:30:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 01:30:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 01:30:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1951 transitions. [2023-08-27 01:30:24,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3905905905905906 [2023-08-27 01:30:24,587 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1951 transitions. [2023-08-27 01:30:24,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1951 transitions. [2023-08-27 01:30:24,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:24,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1951 transitions. [2023-08-27 01:30:24,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 130.06666666666666) internal successors, (1951), 15 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:24,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 333.0) internal successors, (5328), 16 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:24,591 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 333.0) internal successors, (5328), 16 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:24,591 INFO L175 Difference]: Start difference. First operand has 300 places, 807 transitions, 14438 flow. Second operand 15 states and 1951 transitions. [2023-08-27 01:30:24,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1011 transitions, 18644 flow [2023-08-27 01:30:25,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1011 transitions, 16533 flow, removed 614 selfloop flow, removed 15 redundant places. [2023-08-27 01:30:25,226 INFO L231 Difference]: Finished difference. Result has 298 places, 812 transitions, 13247 flow [2023-08-27 01:30:25,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=12296, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=13247, PETRI_PLACES=298, PETRI_TRANSITIONS=812} [2023-08-27 01:30:25,227 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 260 predicate places. [2023-08-27 01:30:25,227 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 812 transitions, 13247 flow [2023-08-27 01:30:25,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 125.42105263157895) internal successors, (2383), 19 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:25,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:25,227 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:25,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-08-27 01:30:25,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-08-27 01:30:25,433 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:25,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:25,433 INFO L85 PathProgramCache]: Analyzing trace with hash -819672765, now seen corresponding path program 12 times [2023-08-27 01:30:25,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:25,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528975362] [2023-08-27 01:30:25,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:25,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:25,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:25,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528975362] [2023-08-27 01:30:25,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528975362] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:25,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87961] [2023-08-27 01:30:25,507 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:30:25,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:25,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:25,508 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:25,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-08-27 01:30:25,653 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:30:25,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:25,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:30:25,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:25,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:25,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:25,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87961] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:25,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:25,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-27 01:30:25,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531385524] [2023-08-27 01:30:25,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:25,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 01:30:25,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:25,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 01:30:25,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-08-27 01:30:25,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:30:25,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 812 transitions, 13247 flow. Second operand has 20 states, 20 states have (on average 124.95) internal successors, (2499), 20 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:25,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:25,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:30:25,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:27,322 INFO L124 PetriNetUnfolderBase]: 4837/6913 cut-off events. [2023-08-27 01:30:27,322 INFO L125 PetriNetUnfolderBase]: For 107541/107559 co-relation queries the response was YES. [2023-08-27 01:30:27,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55557 conditions, 6913 events. 4837/6913 cut-off events. For 107541/107559 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 34263 event pairs, 467 based on Foata normal form. 34/6944 useless extension candidates. Maximal degree in co-relation 55452. Up to 2302 conditions per place. [2023-08-27 01:30:27,393 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 683 selfloop transitions, 446 changer transitions 0/1163 dead transitions. [2023-08-27 01:30:27,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 1163 transitions, 19583 flow [2023-08-27 01:30:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 01:30:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 01:30:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2488 transitions. [2023-08-27 01:30:27,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39323534060376164 [2023-08-27 01:30:27,395 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2488 transitions. [2023-08-27 01:30:27,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2488 transitions. [2023-08-27 01:30:27,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:27,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2488 transitions. [2023-08-27 01:30:27,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 130.94736842105263) internal successors, (2488), 19 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:27,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 333.0) internal successors, (6660), 20 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:27,399 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 333.0) internal successors, (6660), 20 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:27,399 INFO L175 Difference]: Start difference. First operand has 298 places, 812 transitions, 13247 flow. Second operand 19 states and 2488 transitions. [2023-08-27 01:30:27,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 1163 transitions, 19583 flow [2023-08-27 01:30:28,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 1163 transitions, 18817 flow, removed 50 selfloop flow, removed 11 redundant places. [2023-08-27 01:30:28,094 INFO L231 Difference]: Finished difference. Result has 307 places, 887 transitions, 15057 flow [2023-08-27 01:30:28,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=12556, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=389, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=15057, PETRI_PLACES=307, PETRI_TRANSITIONS=887} [2023-08-27 01:30:28,095 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 269 predicate places. [2023-08-27 01:30:28,095 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 887 transitions, 15057 flow [2023-08-27 01:30:28,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 124.95) internal successors, (2499), 20 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:28,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:28,095 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:28,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-08-27 01:30:28,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-08-27 01:30:28,297 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:28,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:28,297 INFO L85 PathProgramCache]: Analyzing trace with hash -336667427, now seen corresponding path program 13 times [2023-08-27 01:30:28,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:28,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924757588] [2023-08-27 01:30:28,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:28,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:28,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:28,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924757588] [2023-08-27 01:30:28,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924757588] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:28,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711450700] [2023-08-27 01:30:28,371 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:30:28,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:28,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:28,372 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:28,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-08-27 01:30:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:28,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:30:28,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:28,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:28,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711450700] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:28,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:28,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-27 01:30:28,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641964795] [2023-08-27 01:30:28,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:28,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:30:28,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:28,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:30:28,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:30:28,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:30:28,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 887 transitions, 15057 flow. Second operand has 19 states, 19 states have (on average 125.26315789473684) internal successors, (2380), 19 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:28,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:28,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:30:28,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:30,096 INFO L124 PetriNetUnfolderBase]: 4830/6898 cut-off events. [2023-08-27 01:30:30,096 INFO L125 PetriNetUnfolderBase]: For 117420/117434 co-relation queries the response was YES. [2023-08-27 01:30:30,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56791 conditions, 6898 events. 4830/6898 cut-off events. For 117420/117434 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 34123 event pairs, 1203 based on Foata normal form. 42/6932 useless extension candidates. Maximal degree in co-relation 56684. Up to 5769 conditions per place. [2023-08-27 01:30:30,164 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 678 selfloop transitions, 244 changer transitions 0/955 dead transitions. [2023-08-27 01:30:30,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 955 transitions, 17655 flow [2023-08-27 01:30:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 01:30:30,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 01:30:30,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1422 transitions. [2023-08-27 01:30:30,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882063882063882 [2023-08-27 01:30:30,166 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1422 transitions. [2023-08-27 01:30:30,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1422 transitions. [2023-08-27 01:30:30,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:30,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1422 transitions. [2023-08-27 01:30:30,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.27272727272728) internal successors, (1422), 11 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:30,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 333.0) internal successors, (3996), 12 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:30,169 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 333.0) internal successors, (3996), 12 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:30,169 INFO L175 Difference]: Start difference. First operand has 307 places, 887 transitions, 15057 flow. Second operand 11 states and 1422 transitions. [2023-08-27 01:30:30,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 955 transitions, 17655 flow [2023-08-27 01:30:30,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 955 transitions, 16623 flow, removed 247 selfloop flow, removed 12 redundant places. [2023-08-27 01:30:30,977 INFO L231 Difference]: Finished difference. Result has 305 places, 882 transitions, 14558 flow [2023-08-27 01:30:30,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=13970, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=879, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14558, PETRI_PLACES=305, PETRI_TRANSITIONS=882} [2023-08-27 01:30:30,978 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 267 predicate places. [2023-08-27 01:30:30,978 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 882 transitions, 14558 flow [2023-08-27 01:30:30,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 125.26315789473684) internal successors, (2380), 19 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:30,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:30,978 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:30,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-08-27 01:30:31,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:31,183 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:31,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:31,184 INFO L85 PathProgramCache]: Analyzing trace with hash -998493553, now seen corresponding path program 14 times [2023-08-27 01:30:31,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:31,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419104729] [2023-08-27 01:30:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:31,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:31,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:31,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419104729] [2023-08-27 01:30:31,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419104729] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:31,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871671657] [2023-08-27 01:30:31,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:30:31,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:31,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:31,259 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:31,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-08-27 01:30:31,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:30:31,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:31,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:30:31,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:31,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:31,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871671657] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:31,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:31,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-27 01:30:31,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708849589] [2023-08-27 01:30:31,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:31,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 01:30:31,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:31,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 01:30:31,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-08-27 01:30:31,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:30:31,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 882 transitions, 14558 flow. Second operand has 21 states, 21 states have (on average 124.95238095238095) internal successors, (2624), 21 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:31,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:31,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:30:31,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:33,214 INFO L124 PetriNetUnfolderBase]: 4784/6813 cut-off events. [2023-08-27 01:30:33,214 INFO L125 PetriNetUnfolderBase]: For 92786/92804 co-relation queries the response was YES. [2023-08-27 01:30:33,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52594 conditions, 6813 events. 4784/6813 cut-off events. For 92786/92804 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 33460 event pairs, 465 based on Foata normal form. 76/6882 useless extension candidates. Maximal degree in co-relation 52489. Up to 2314 conditions per place. [2023-08-27 01:30:33,276 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 660 selfloop transitions, 441 changer transitions 0/1133 dead transitions. [2023-08-27 01:30:33,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 1133 transitions, 19234 flow [2023-08-27 01:30:33,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 01:30:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 01:30:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2359 transitions. [2023-08-27 01:30:33,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39356022689356024 [2023-08-27 01:30:33,278 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2359 transitions. [2023-08-27 01:30:33,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2359 transitions. [2023-08-27 01:30:33,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:33,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2359 transitions. [2023-08-27 01:30:33,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 131.05555555555554) internal successors, (2359), 18 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:33,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 333.0) internal successors, (6327), 19 states have internal predecessors, (6327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:33,282 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 333.0) internal successors, (6327), 19 states have internal predecessors, (6327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:33,283 INFO L175 Difference]: Start difference. First operand has 305 places, 882 transitions, 14558 flow. Second operand 18 states and 2359 transitions. [2023-08-27 01:30:33,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 1133 transitions, 19234 flow [2023-08-27 01:30:33,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1133 transitions, 18721 flow, removed 21 selfloop flow, removed 9 redundant places. [2023-08-27 01:30:33,814 INFO L231 Difference]: Finished difference. Result has 314 places, 878 transitions, 14978 flow [2023-08-27 01:30:33,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=13924, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=873, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=436, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=14978, PETRI_PLACES=314, PETRI_TRANSITIONS=878} [2023-08-27 01:30:33,815 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 276 predicate places. [2023-08-27 01:30:33,815 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 878 transitions, 14978 flow [2023-08-27 01:30:33,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 124.95238095238095) internal successors, (2624), 21 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:33,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:33,815 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:33,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-08-27 01:30:34,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:34,016 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:34,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:34,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1353718249, now seen corresponding path program 15 times [2023-08-27 01:30:34,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:34,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69703198] [2023-08-27 01:30:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:34,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:34,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:34,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69703198] [2023-08-27 01:30:34,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69703198] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:34,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261003720] [2023-08-27 01:30:34,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:30:34,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:34,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:34,089 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:34,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-08-27 01:30:34,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:30:34,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:34,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:30:34,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:34,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:34,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261003720] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:34,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:34,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-27 01:30:34,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873699775] [2023-08-27 01:30:34,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:34,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:30:34,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:34,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:30:34,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:30:34,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:30:34,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 878 transitions, 14978 flow. Second operand has 19 states, 19 states have (on average 125.05263157894737) internal successors, (2376), 19 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:34,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:34,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:30:34,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:35,762 INFO L124 PetriNetUnfolderBase]: 4870/6960 cut-off events. [2023-08-27 01:30:35,762 INFO L125 PetriNetUnfolderBase]: For 96959/96977 co-relation queries the response was YES. [2023-08-27 01:30:35,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54255 conditions, 6960 events. 4870/6960 cut-off events. For 96959/96977 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 34342 event pairs, 619 based on Foata normal form. 30/6987 useless extension candidates. Maximal degree in co-relation 54149. Up to 2854 conditions per place. [2023-08-27 01:30:35,841 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 632 selfloop transitions, 339 changer transitions 0/1003 dead transitions. [2023-08-27 01:30:35,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 1003 transitions, 18146 flow [2023-08-27 01:30:35,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:30:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:30:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1298 transitions. [2023-08-27 01:30:35,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897897897897898 [2023-08-27 01:30:35,843 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1298 transitions. [2023-08-27 01:30:35,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1298 transitions. [2023-08-27 01:30:35,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:35,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1298 transitions. [2023-08-27 01:30:35,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 129.8) internal successors, (1298), 10 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:35,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:35,845 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:35,846 INFO L175 Difference]: Start difference. First operand has 314 places, 878 transitions, 14978 flow. Second operand 10 states and 1298 transitions. [2023-08-27 01:30:35,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 1003 transitions, 18146 flow [2023-08-27 01:30:36,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 1003 transitions, 16979 flow, removed 21 selfloop flow, removed 17 redundant places. [2023-08-27 01:30:36,446 INFO L231 Difference]: Finished difference. Result has 305 places, 875 transitions, 14407 flow [2023-08-27 01:30:36,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=13729, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=875, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=339, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14407, PETRI_PLACES=305, PETRI_TRANSITIONS=875} [2023-08-27 01:30:36,447 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 267 predicate places. [2023-08-27 01:30:36,447 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 875 transitions, 14407 flow [2023-08-27 01:30:36,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 125.05263157894737) internal successors, (2376), 19 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:36,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:36,447 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:36,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-08-27 01:30:36,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:36,648 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:36,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:36,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2007293847, now seen corresponding path program 16 times [2023-08-27 01:30:36,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:36,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433258175] [2023-08-27 01:30:36,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:36,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:36,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:36,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433258175] [2023-08-27 01:30:36,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433258175] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:36,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559115174] [2023-08-27 01:30:36,723 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:30:36,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:36,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:36,724 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:36,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-08-27 01:30:36,875 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:30:36,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:36,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:30:36,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:36,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:36,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:37,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559115174] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:37,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:37,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-27 01:30:37,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868779401] [2023-08-27 01:30:37,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:37,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:30:37,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:37,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:30:37,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:30:37,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:30:37,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 875 transitions, 14407 flow. Second operand has 19 states, 19 states have (on average 125.05263157894737) internal successors, (2376), 19 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:37,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:37,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:30:37,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:38,378 INFO L124 PetriNetUnfolderBase]: 4848/6918 cut-off events. [2023-08-27 01:30:38,378 INFO L125 PetriNetUnfolderBase]: For 91928/91946 co-relation queries the response was YES. [2023-08-27 01:30:38,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52625 conditions, 6918 events. 4848/6918 cut-off events. For 91928/91946 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 34002 event pairs, 1045 based on Foata normal form. 34/6949 useless extension candidates. Maximal degree in co-relation 52521. Up to 4654 conditions per place. [2023-08-27 01:30:38,454 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 691 selfloop transitions, 274 changer transitions 0/997 dead transitions. [2023-08-27 01:30:38,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 997 transitions, 17552 flow [2023-08-27 01:30:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 01:30:38,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 01:30:38,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1557 transitions. [2023-08-27 01:30:38,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38963963963963966 [2023-08-27 01:30:38,456 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1557 transitions. [2023-08-27 01:30:38,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1557 transitions. [2023-08-27 01:30:38,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:38,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1557 transitions. [2023-08-27 01:30:38,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.75) internal successors, (1557), 12 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:38,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 333.0) internal successors, (4329), 13 states have internal predecessors, (4329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:38,459 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 333.0) internal successors, (4329), 13 states have internal predecessors, (4329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:38,459 INFO L175 Difference]: Start difference. First operand has 305 places, 875 transitions, 14407 flow. Second operand 12 states and 1557 transitions. [2023-08-27 01:30:38,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 997 transitions, 17552 flow [2023-08-27 01:30:39,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 997 transitions, 16932 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 01:30:39,035 INFO L231 Difference]: Finished difference. Result has 309 places, 882 transitions, 14527 flow [2023-08-27 01:30:39,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=13801, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=875, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14527, PETRI_PLACES=309, PETRI_TRANSITIONS=882} [2023-08-27 01:30:39,035 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 271 predicate places. [2023-08-27 01:30:39,036 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 882 transitions, 14527 flow [2023-08-27 01:30:39,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 125.05263157894737) internal successors, (2376), 19 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:39,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:39,036 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:39,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2023-08-27 01:30:39,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:39,238 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:39,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1876014788, now seen corresponding path program 19 times [2023-08-27 01:30:39,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:39,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561686764] [2023-08-27 01:30:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:39,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:39,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:39,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561686764] [2023-08-27 01:30:39,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561686764] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:39,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281606705] [2023-08-27 01:30:39,311 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:30:39,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:39,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:39,312 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:39,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-08-27 01:30:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:39,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:30:39,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:39,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:39,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281606705] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:39,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:39,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-27 01:30:39,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708461786] [2023-08-27 01:30:39,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:39,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:30:39,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:39,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:30:39,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-08-27 01:30:39,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:30:39,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 882 transitions, 14527 flow. Second operand has 18 states, 18 states have (on average 125.11111111111111) internal successors, (2252), 18 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:39,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:39,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:30:39,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:40,995 INFO L124 PetriNetUnfolderBase]: 4889/6986 cut-off events. [2023-08-27 01:30:40,995 INFO L125 PetriNetUnfolderBase]: For 91100/91118 co-relation queries the response was YES. [2023-08-27 01:30:41,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53234 conditions, 6986 events. 4889/6986 cut-off events. For 91100/91118 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 34546 event pairs, 1051 based on Foata normal form. 44/7016 useless extension candidates. Maximal degree in co-relation 53129. Up to 4702 conditions per place. [2023-08-27 01:30:41,073 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 724 selfloop transitions, 243 changer transitions 0/999 dead transitions. [2023-08-27 01:30:41,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 999 transitions, 17689 flow [2023-08-27 01:30:41,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:30:41,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:30:41,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1292 transitions. [2023-08-27 01:30:41,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.387987987987988 [2023-08-27 01:30:41,074 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1292 transitions. [2023-08-27 01:30:41,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1292 transitions. [2023-08-27 01:30:41,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:41,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1292 transitions. [2023-08-27 01:30:41,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 129.2) internal successors, (1292), 10 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:41,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:41,077 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:41,077 INFO L175 Difference]: Start difference. First operand has 309 places, 882 transitions, 14527 flow. Second operand 10 states and 1292 transitions. [2023-08-27 01:30:41,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 999 transitions, 17689 flow [2023-08-27 01:30:41,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 999 transitions, 17112 flow, removed 23 selfloop flow, removed 10 redundant places. [2023-08-27 01:30:41,702 INFO L231 Difference]: Finished difference. Result has 309 places, 896 transitions, 14699 flow [2023-08-27 01:30:41,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=13950, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=882, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14699, PETRI_PLACES=309, PETRI_TRANSITIONS=896} [2023-08-27 01:30:41,703 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 271 predicate places. [2023-08-27 01:30:41,703 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 896 transitions, 14699 flow [2023-08-27 01:30:41,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 125.11111111111111) internal successors, (2252), 18 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:41,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:41,703 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:41,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-08-27 01:30:41,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-08-27 01:30:41,904 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:41,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:41,904 INFO L85 PathProgramCache]: Analyzing trace with hash -449253328, now seen corresponding path program 20 times [2023-08-27 01:30:41,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:41,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43780661] [2023-08-27 01:30:41,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:41,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:41,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:41,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43780661] [2023-08-27 01:30:41,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43780661] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:41,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109786112] [2023-08-27 01:30:41,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:30:41,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:41,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:41,985 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:41,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-08-27 01:30:42,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:30:42,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:42,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:30:42,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:42,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:42,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109786112] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:42,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:42,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-27 01:30:42,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416390835] [2023-08-27 01:30:42,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:42,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 01:30:42,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:42,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 01:30:42,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-08-27 01:30:42,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-08-27 01:30:42,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 896 transitions, 14699 flow. Second operand has 20 states, 20 states have (on average 124.9) internal successors, (2498), 20 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:42,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:42,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-08-27 01:30:42,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:30:43,671 INFO L124 PetriNetUnfolderBase]: 4847/6910 cut-off events. [2023-08-27 01:30:43,672 INFO L125 PetriNetUnfolderBase]: For 90853/90871 co-relation queries the response was YES. [2023-08-27 01:30:43,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52707 conditions, 6910 events. 4847/6910 cut-off events. For 90853/90871 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 33934 event pairs, 1051 based on Foata normal form. 44/6940 useless extension candidates. Maximal degree in co-relation 52601. Up to 4702 conditions per place. [2023-08-27 01:30:43,749 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 707 selfloop transitions, 281 changer transitions 0/1019 dead transitions. [2023-08-27 01:30:43,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 1019 transitions, 17822 flow [2023-08-27 01:30:43,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 01:30:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 01:30:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1684 transitions. [2023-08-27 01:30:43,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.389004389004389 [2023-08-27 01:30:43,751 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1684 transitions. [2023-08-27 01:30:43,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1684 transitions. [2023-08-27 01:30:43,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:30:43,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1684 transitions. [2023-08-27 01:30:43,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 129.53846153846155) internal successors, (1684), 13 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:43,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 333.0) internal successors, (4662), 14 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:43,754 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 333.0) internal successors, (4662), 14 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:43,754 INFO L175 Difference]: Start difference. First operand has 309 places, 896 transitions, 14699 flow. Second operand 13 states and 1684 transitions. [2023-08-27 01:30:43,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 1019 transitions, 17822 flow [2023-08-27 01:30:44,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1019 transitions, 17326 flow, removed 17 selfloop flow, removed 8 redundant places. [2023-08-27 01:30:44,343 INFO L231 Difference]: Finished difference. Result has 313 places, 889 transitions, 14656 flow [2023-08-27 01:30:44,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=14094, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=889, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14656, PETRI_PLACES=313, PETRI_TRANSITIONS=889} [2023-08-27 01:30:44,344 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 275 predicate places. [2023-08-27 01:30:44,344 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 889 transitions, 14656 flow [2023-08-27 01:30:44,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 124.9) internal successors, (2498), 20 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:44,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:30:44,344 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:30:44,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2023-08-27 01:30:44,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-08-27 01:30:44,545 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:30:44,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:30:44,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1776930469, now seen corresponding path program 17 times [2023-08-27 01:30:44,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:30:44,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847297125] [2023-08-27 01:30:44,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:30:44,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:30:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:30:45,270 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 01:30:45,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:30:45,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847297125] [2023-08-27 01:30:45,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847297125] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:30:45,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828827246] [2023-08-27 01:30:45,271 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:30:45,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:30:45,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:30:45,272 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:30:45,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-08-27 01:30:45,454 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:30:45,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:30:45,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-27 01:30:45,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:30:45,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:30:45,716 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 20 [2023-08-27 01:30:45,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:30:45,908 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:30:45,909 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 35 [2023-08-27 01:30:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:30:45,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:30:46,387 INFO L322 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-08-27 01:30:46,388 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 77 [2023-08-27 01:30:46,395 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:30:46,395 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 18 [2023-08-27 01:30:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:30:48,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828827246] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:30:48,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:30:48,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 40 [2023-08-27 01:30:48,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068109007] [2023-08-27 01:30:48,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:30:48,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-27 01:30:48,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:30:48,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-27 01:30:48,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1526, Unknown=1, NotChecked=0, Total=1722 [2023-08-27 01:30:48,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 333 [2023-08-27 01:30:48,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 889 transitions, 14656 flow. Second operand has 42 states, 42 states have (on average 96.83333333333333) internal successors, (4067), 42 states have internal predecessors, (4067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:30:48,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:30:48,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 333 [2023-08-27 01:30:48,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:31:23,125 INFO L124 PetriNetUnfolderBase]: 5834/8379 cut-off events. [2023-08-27 01:31:23,125 INFO L125 PetriNetUnfolderBase]: For 107247/107247 co-relation queries the response was YES. [2023-08-27 01:31:23,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63356 conditions, 8379 events. 5834/8379 cut-off events. For 107247/107247 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 43166 event pairs, 751 based on Foata normal form. 3/8382 useless extension candidates. Maximal degree in co-relation 63250. Up to 6267 conditions per place. [2023-08-27 01:31:23,222 INFO L140 encePairwiseOnDemand]: 318/333 looper letters, 793 selfloop transitions, 586 changer transitions 19/1398 dead transitions. [2023-08-27 01:31:23,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1398 transitions, 23454 flow [2023-08-27 01:31:23,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-08-27 01:31:23,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-08-27 01:31:23,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 5506 transitions. [2023-08-27 01:31:23,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30619508397286177 [2023-08-27 01:31:23,226 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 5506 transitions. [2023-08-27 01:31:23,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 5506 transitions. [2023-08-27 01:31:23,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:31:23,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 5506 transitions. [2023-08-27 01:31:23,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 101.96296296296296) internal successors, (5506), 54 states have internal predecessors, (5506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:31:23,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 333.0) internal successors, (18315), 55 states have internal predecessors, (18315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:31:23,238 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 333.0) internal successors, (18315), 55 states have internal predecessors, (18315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:31:23,238 INFO L175 Difference]: Start difference. First operand has 313 places, 889 transitions, 14656 flow. Second operand 54 states and 5506 transitions. [2023-08-27 01:31:23,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 1398 transitions, 23454 flow [2023-08-27 01:31:24,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 1398 transitions, 22633 flow, removed 30 selfloop flow, removed 11 redundant places. [2023-08-27 01:31:24,075 INFO L231 Difference]: Finished difference. Result has 368 places, 1165 transitions, 20004 flow [2023-08-27 01:31:24,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=14053, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=889, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=20004, PETRI_PLACES=368, PETRI_TRANSITIONS=1165} [2023-08-27 01:31:24,075 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 330 predicate places. [2023-08-27 01:31:24,075 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 1165 transitions, 20004 flow [2023-08-27 01:31:24,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 96.83333333333333) internal successors, (4067), 42 states have internal predecessors, (4067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:31:24,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:31:24,076 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:31:24,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2023-08-27 01:31:24,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-08-27 01:31:24,280 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:31:24,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:31:24,281 INFO L85 PathProgramCache]: Analyzing trace with hash -894920622, now seen corresponding path program 7 times [2023-08-27 01:31:24,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:31:24,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445214770] [2023-08-27 01:31:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:31:24,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:31:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:31:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:31:24,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:31:24,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445214770] [2023-08-27 01:31:24,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445214770] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:31:24,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112766969] [2023-08-27 01:31:24,988 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:31:24,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:31:24,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:31:24,989 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:31:24,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-08-27 01:31:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:31:25,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 01:31:25,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:31:25,685 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:31:25,687 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:31:25,687 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 15 [2023-08-27 01:31:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:31:25,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:31:26,011 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-27 01:31:26,012 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 51 [2023-08-27 01:31:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:31:45,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112766969] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:31:45,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:31:45,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 34 [2023-08-27 01:31:45,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743306954] [2023-08-27 01:31:45,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:31:45,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-27 01:31:45,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:31:45,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-27 01:31:45,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2023-08-27 01:31:45,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 333 [2023-08-27 01:31:45,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 1165 transitions, 20004 flow. Second operand has 36 states, 36 states have (on average 91.0) internal successors, (3276), 36 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:31:45,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:31:45,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 333 [2023-08-27 01:31:45,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:31:49,424 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 01:31:52,798 INFO L124 PetriNetUnfolderBase]: 7993/11570 cut-off events. [2023-08-27 01:31:52,798 INFO L125 PetriNetUnfolderBase]: For 170737/170737 co-relation queries the response was YES. [2023-08-27 01:31:52,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93565 conditions, 11570 events. 7993/11570 cut-off events. For 170737/170737 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 63431 event pairs, 968 based on Foata normal form. 4/11574 useless extension candidates. Maximal degree in co-relation 93447. Up to 9101 conditions per place. [2023-08-27 01:31:52,947 INFO L140 encePairwiseOnDemand]: 318/333 looper letters, 1380 selfloop transitions, 577 changer transitions 3/1960 dead transitions. [2023-08-27 01:31:52,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 1960 transitions, 37369 flow [2023-08-27 01:31:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-27 01:31:52,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-27 01:31:52,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2798 transitions. [2023-08-27 01:31:52,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3000858000858001 [2023-08-27 01:31:52,950 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2798 transitions. [2023-08-27 01:31:52,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2798 transitions. [2023-08-27 01:31:52,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:31:52,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2798 transitions. [2023-08-27 01:31:52,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 99.92857142857143) internal successors, (2798), 28 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:31:52,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 333.0) internal successors, (9657), 29 states have internal predecessors, (9657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:31:52,956 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 333.0) internal successors, (9657), 29 states have internal predecessors, (9657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:31:52,956 INFO L175 Difference]: Start difference. First operand has 368 places, 1165 transitions, 20004 flow. Second operand 28 states and 2798 transitions. [2023-08-27 01:31:52,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 1960 transitions, 37369 flow [2023-08-27 01:31:54,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1960 transitions, 34047 flow, removed 1525 selfloop flow, removed 7 redundant places. [2023-08-27 01:31:54,769 INFO L231 Difference]: Finished difference. Result has 405 places, 1651 transitions, 29190 flow [2023-08-27 01:31:54,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=17897, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=852, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=29190, PETRI_PLACES=405, PETRI_TRANSITIONS=1651} [2023-08-27 01:31:54,770 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 367 predicate places. [2023-08-27 01:31:54,770 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 1651 transitions, 29190 flow [2023-08-27 01:31:54,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 91.0) internal successors, (3276), 36 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:31:54,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:31:54,771 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:31:54,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2023-08-27 01:31:54,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:31:54,971 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:31:54,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:31:54,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1834650716, now seen corresponding path program 8 times [2023-08-27 01:31:54,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:31:54,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784875109] [2023-08-27 01:31:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:31:54,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:31:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:31:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:31:55,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:31:55,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784875109] [2023-08-27 01:31:55,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784875109] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:31:55,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586659321] [2023-08-27 01:31:55,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:31:55,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:31:55,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:31:55,706 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:31:55,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-08-27 01:31:56,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:31:56,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:31:56,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 01:31:56,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:31:56,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:31:56,269 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:31:56,269 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 25 [2023-08-27 01:31:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:31:56,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:31:56,643 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-27 01:31:56,643 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 64 [2023-08-27 01:31:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:31:57,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586659321] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:31:57,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:31:57,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 8] total 29 [2023-08-27 01:31:57,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953483548] [2023-08-27 01:31:57,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:31:57,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-27 01:31:57,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:31:57,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-27 01:31:57,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2023-08-27 01:31:57,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 333 [2023-08-27 01:31:57,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 1651 transitions, 29190 flow. Second operand has 31 states, 31 states have (on average 91.16129032258064) internal successors, (2826), 31 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:31:57,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:31:57,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 333 [2023-08-27 01:31:57,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:32:01,833 INFO L124 PetriNetUnfolderBase]: 8553/12399 cut-off events. [2023-08-27 01:32:01,833 INFO L125 PetriNetUnfolderBase]: For 186755/186755 co-relation queries the response was YES. [2023-08-27 01:32:01,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100757 conditions, 12399 events. 8553/12399 cut-off events. For 186755/186755 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 69188 event pairs, 1060 based on Foata normal form. 1/12400 useless extension candidates. Maximal degree in co-relation 100621. Up to 10618 conditions per place. [2023-08-27 01:32:02,007 INFO L140 encePairwiseOnDemand]: 319/333 looper letters, 1429 selfloop transitions, 501 changer transitions 1/1931 dead transitions. [2023-08-27 01:32:02,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 1931 transitions, 36953 flow [2023-08-27 01:32:02,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 01:32:02,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 01:32:02,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1866 transitions. [2023-08-27 01:32:02,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29492650545282123 [2023-08-27 01:32:02,009 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1866 transitions. [2023-08-27 01:32:02,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1866 transitions. [2023-08-27 01:32:02,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:32:02,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1866 transitions. [2023-08-27 01:32:02,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 98.21052631578948) internal successors, (1866), 19 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:32:02,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 333.0) internal successors, (6660), 20 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:32:02,013 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 333.0) internal successors, (6660), 20 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:32:02,013 INFO L175 Difference]: Start difference. First operand has 405 places, 1651 transitions, 29190 flow. Second operand 19 states and 1866 transitions. [2023-08-27 01:32:02,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 1931 transitions, 36953 flow [2023-08-27 01:32:04,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 1931 transitions, 35332 flow, removed 807 selfloop flow, removed 3 redundant places. [2023-08-27 01:32:04,445 INFO L231 Difference]: Finished difference. Result has 428 places, 1769 transitions, 30995 flow [2023-08-27 01:32:04,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=27575, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=30995, PETRI_PLACES=428, PETRI_TRANSITIONS=1769} [2023-08-27 01:32:04,445 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 390 predicate places. [2023-08-27 01:32:04,445 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 1769 transitions, 30995 flow [2023-08-27 01:32:04,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 91.16129032258064) internal successors, (2826), 31 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:32:04,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:32:04,446 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:32:04,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-08-27 01:32:04,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:32:04,646 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:32:04,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:32:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash 142471434, now seen corresponding path program 9 times [2023-08-27 01:32:04,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:32:04,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298248835] [2023-08-27 01:32:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:32:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:32:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:32:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:32:05,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:32:05,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298248835] [2023-08-27 01:32:05,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298248835] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:32:05,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075345925] [2023-08-27 01:32:05,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:32:05,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:32:05,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:32:05,285 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:32:05,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-08-27 01:32:05,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 01:32:05,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:32:05,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-27 01:32:05,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:32:05,898 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:32:05,898 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2023-08-27 01:32:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:32:05,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:32:06,290 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:32:06,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 59 [2023-08-27 01:32:33,357 WARN L234 SmtUtils]: Spent 16.99s on a formula simplification. DAG size of input: 168 DAG size of output: 37 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 01:32:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:32:33,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075345925] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:32:33,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:32:33,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 35 [2023-08-27 01:32:33,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230903062] [2023-08-27 01:32:33,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:32:33,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-27 01:32:33,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:32:33,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-27 01:32:33,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2023-08-27 01:32:33,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 333 [2023-08-27 01:32:33,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 1769 transitions, 30995 flow. Second operand has 37 states, 37 states have (on average 91.10810810810811) internal successors, (3371), 37 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:32:33,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:32:33,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 333 [2023-08-27 01:32:33,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:32:40,066 INFO L124 PetriNetUnfolderBase]: 9493/13749 cut-off events. [2023-08-27 01:32:40,066 INFO L125 PetriNetUnfolderBase]: For 203641/203641 co-relation queries the response was YES. [2023-08-27 01:32:40,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111317 conditions, 13749 events. 9493/13749 cut-off events. For 203641/203641 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 77860 event pairs, 1152 based on Foata normal form. 4/13753 useless extension candidates. Maximal degree in co-relation 111172. Up to 11001 conditions per place. [2023-08-27 01:32:40,267 INFO L140 encePairwiseOnDemand]: 317/333 looper letters, 1519 selfloop transitions, 684 changer transitions 11/2214 dead transitions. [2023-08-27 01:32:40,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 2214 transitions, 41656 flow [2023-08-27 01:32:40,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-27 01:32:40,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-27 01:32:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2577 transitions. [2023-08-27 01:32:40,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29764379764379767 [2023-08-27 01:32:40,269 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2577 transitions. [2023-08-27 01:32:40,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2577 transitions. [2023-08-27 01:32:40,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:32:40,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2577 transitions. [2023-08-27 01:32:40,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 99.11538461538461) internal successors, (2577), 26 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:32:40,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 333.0) internal successors, (8991), 27 states have internal predecessors, (8991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:32:40,275 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 333.0) internal successors, (8991), 27 states have internal predecessors, (8991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:32:40,275 INFO L175 Difference]: Start difference. First operand has 428 places, 1769 transitions, 30995 flow. Second operand 26 states and 2577 transitions. [2023-08-27 01:32:40,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 2214 transitions, 41656 flow [2023-08-27 01:32:42,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 2214 transitions, 40863 flow, removed 245 selfloop flow, removed 7 redundant places. [2023-08-27 01:32:42,998 INFO L231 Difference]: Finished difference. Result has 460 places, 1963 transitions, 35853 flow [2023-08-27 01:32:42,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=30226, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=506, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=35853, PETRI_PLACES=460, PETRI_TRANSITIONS=1963} [2023-08-27 01:32:42,999 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 422 predicate places. [2023-08-27 01:32:43,000 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 1963 transitions, 35853 flow [2023-08-27 01:32:43,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 91.10810810810811) internal successors, (3371), 37 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:32:43,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:32:43,000 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:32:43,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2023-08-27 01:32:43,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-08-27 01:32:43,200 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:32:43,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:32:43,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1514338942, now seen corresponding path program 10 times [2023-08-27 01:32:43,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:32:43,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879915324] [2023-08-27 01:32:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:32:43,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:32:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:32:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:32:43,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:32:43,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879915324] [2023-08-27 01:32:43,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879915324] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:32:43,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9003708] [2023-08-27 01:32:43,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:32:43,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:32:43,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:32:43,909 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:32:43,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-08-27 01:32:44,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:32:44,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:32:44,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-27 01:32:44,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:32:44,837 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:32:44,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:32:44,840 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:32:44,840 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 15 [2023-08-27 01:32:44,869 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:32:44,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:32:45,289 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:32:45,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 59 [2023-08-27 01:32:58,106 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~sum1~0 4294967296))) (let ((.cse43 (< .cse3 1)) (.cse64 (+ c_thread1Thread1of1ForFork0_~i~0 1))) (let ((.cse25 (= .cse64 0)) (.cse6 (< .cse64 c_~N~0)) (.cse30 (mod (+ c_~sum3~0 c_~sum2~0) 4294967296)) (.cse18 (= c_thread1Thread1of1ForFork0_~i~0 0)) (.cse40 (or .cse43 (forall ((v_arrayElimCell_121 Int) (v_y_644 Int)) (let ((.cse63 (* v_y_644 4294967296))) (or (< v_arrayElimCell_121 .cse63) (< (+ .cse63 (mod (+ c_~sum3~0 (* 2 v_arrayElimCell_121) c_~sum2~0) 4294967296)) (+ v_arrayElimCell_121 1))))))) (.cse19 (< c_~N~0 (+ 2 c_thread1Thread1of1ForFork0_~i~0)))) (and (forall ((v_arrayElimCell_121 Int) (v_y_644 Int)) (let ((.cse0 (* v_y_644 4294967296))) (or (< v_arrayElimCell_121 .cse0) (forall ((v_y_758 Int)) (let ((.cse5 (* 2 v_arrayElimCell_121)) (.cse1 (* v_y_758 4294967296))) (let ((.cse4 (+ .cse1 4294967296)) (.cse2 (+ .cse5 .cse3))) (or (<= (+ .cse0 8589934592 .cse1) .cse2) (< (+ v_arrayElimCell_121 .cse3) .cse4) (<= .cse4 v_arrayElimCell_121) (= .cse2 (+ .cse0 (mod (+ c_~sum3~0 .cse5 c_~sum2~0) 4294967296) .cse1 4294967296))))))))) (or .cse6 (and (forall ((v_arrayElimCell_121 Int) (v_y_644 Int)) (let ((.cse8 (* v_y_644 4294967296))) (or (forall ((v_y_720 Int)) (let ((.cse11 (* 2 v_arrayElimCell_121)) (.cse9 (* v_y_720 4294967296))) (let ((.cse7 (+ 4294967296 .cse9)) (.cse10 (+ .cse11 .cse3))) (or (< (+ v_arrayElimCell_121 .cse3) .cse7) (<= (+ .cse8 8589934592 .cse9) .cse10) (<= .cse7 v_arrayElimCell_121) (= .cse10 (+ .cse8 (mod (+ c_~sum3~0 .cse11 c_~sum2~0) 4294967296) 4294967296 .cse9)))))) (< v_arrayElimCell_121 .cse8)))) (forall ((v_arrayElimCell_121 Int) (v_y_644 Int)) (let ((.cse13 (* v_y_644 4294967296))) (or (forall ((v_y_720 Int)) (let ((.cse15 (* 2 v_arrayElimCell_121))) (let ((.cse12 (* v_y_720 4294967296)) (.cse14 (+ .cse15 .cse3))) (or (< v_arrayElimCell_121 .cse12) (<= (+ .cse13 4294967296 .cse12) .cse14) (= (+ .cse13 (mod (+ c_~sum3~0 .cse15 c_~sum2~0) 4294967296) .cse12) .cse14))))) (< v_arrayElimCell_121 .cse13)))))) (or (and (forall ((v_arrayElimCell_121 Int) (v_y_644 Int)) (let ((.cse16 (* v_y_644 4294967296))) (or (< (+ .cse16 (mod (+ c_~sum3~0 (* 2 v_arrayElimCell_121) c_~sum2~0) 4294967296)) (+ v_arrayElimCell_121 .cse3 1)) (< v_arrayElimCell_121 .cse16)))) (forall ((v_arrayElimCell_121 Int) (v_y_644 Int)) (let ((.cse17 (* v_y_644 4294967296))) (or (< v_arrayElimCell_121 .cse17) (< (+ .cse17 4294967295) (+ v_arrayElimCell_121 .cse3)) (< 4294967294 (mod (+ c_~sum3~0 (* 2 v_arrayElimCell_121) c_~sum2~0) 4294967296)))))) .cse18 .cse19) (< c_thread1Thread1of1ForFork0_~i~0 c_~N~0) (forall ((v_arrayElimCell_121 Int) (v_y_644 Int)) (let ((.cse20 (* v_y_644 4294967296))) (or (<= (+ .cse20 4294967296) v_arrayElimCell_121) (< v_arrayElimCell_121 .cse20) (forall ((v_y_760 Int)) (let ((.cse24 (* 2 v_arrayElimCell_121))) (let ((.cse22 (mod (+ c_~sum3~0 .cse24 c_~sum2~0) 4294967296)) (.cse21 (+ .cse24 .cse3)) (.cse23 (* v_y_760 4294967296))) (or (= .cse21 (+ .cse20 .cse22 8589934592 .cse23)) (= .cse21 (+ .cse20 .cse22 .cse23 4294967296)) (< v_arrayElimCell_121 .cse23) (= (+ .cse20 .cse22 .cse23) .cse21) (<= (+ .cse23 4294967296) v_arrayElimCell_121)))))))) (or .cse6 .cse25) (< c_~N~0 (+ 3 c_thread1Thread1of1ForFork0_~i~0)) (or (and (forall ((v_arrayElimCell_121 Int) (v_y_644 Int)) (let ((.cse26 (* v_y_644 4294967296))) (or (< v_arrayElimCell_121 (+ .cse26 (mod (+ c_~sum3~0 (* 2 v_arrayElimCell_121) c_~sum2~0) 4294967296) 2)) (<= (+ .cse26 4294967296) v_arrayElimCell_121)))) (forall ((v_arrayElimCell_121 Int) (v_y_644 Int)) (let ((.cse27 (* v_y_644 4294967296))) (or (< (mod (+ c_~sum3~0 (* 2 v_arrayElimCell_121) c_~sum2~0) 4294967296) 1) (<= (+ .cse27 4294967296) v_arrayElimCell_121) (< v_arrayElimCell_121 (+ .cse27 1))))) (forall ((v_arrayElimCell_121 Int) (v_y_644 Int)) (let ((.cse28 (* v_y_644 4294967296))) (or (< (+ v_arrayElimCell_121 .cse3) (+ .cse28 (mod (+ c_~sum3~0 (* 2 v_arrayElimCell_121) c_~sum2~0) 4294967296) 4294967298)) (<= (+ .cse28 4294967296) v_arrayElimCell_121)))) (forall ((v_arrayElimCell_121 Int) (v_y_644 Int)) (let ((.cse29 (* v_y_644 4294967296))) (or (< (mod (+ c_~sum3~0 (* 2 v_arrayElimCell_121) c_~sum2~0) 4294967296) 1) (<= (+ .cse29 4294967296) v_arrayElimCell_121) (< (+ v_arrayElimCell_121 .cse3) (+ .cse29 4294967297)))))) .cse18 .cse19) (or (and (< (+ (* (div (+ 4294967295 (* (- 1) .cse3)) 4294967296) 4294967296) .cse3) (+ .cse30 1)) (forall ((v_z_724 Int)) (or (< v_z_724 0) (<= 4294967296 v_z_724) (forall ((v_y_724 Int) (v_y_644 Int)) (let ((.cse32 (* v_y_724 4294967296)) (.cse34 (* 2 v_z_724))) (let ((.cse33 (+ .cse32 .cse3 .cse34)) (.cse31 (* v_y_644 4294967296))) (or (<= (+ .cse31 4294967296) (+ .cse32 v_z_724)) (< .cse33 (+ .cse31 8589934592)) (= .cse33 (+ .cse31 8589934592 (mod (+ c_~sum3~0 c_~sum2~0 .cse34) 4294967296))))))))) .cse18 (< .cse30 (+ .cse3 1)) (forall ((v_z_724 Int)) (or (< v_z_724 0) (forall ((v_y_724 Int) (v_y_644 Int)) (let ((.cse36 (* v_y_724 4294967296)) (.cse39 (* 2 v_z_724)) (.cse38 (* v_y_644 4294967296))) (let ((.cse35 (+ .cse38 4294967296)) (.cse37 (+ .cse36 .cse3 .cse39))) (or (<= .cse35 (+ .cse36 v_z_724)) (< .cse37 .cse35) (= (+ .cse38 (mod (+ c_~sum3~0 c_~sum2~0 .cse39) 4294967296) 4294967296) .cse37))))) (<= 4294967296 (+ v_z_724 .cse3))))) .cse25) (or (and .cse40 (or (forall ((v_arrayElimCell_121 Int) (v_y_644 Int)) (let ((.cse41 (* v_y_644 4294967296)) (.cse42 (mod (+ c_~sum3~0 (* 2 v_arrayElimCell_121) c_~sum2~0) 4294967296))) (or (< v_arrayElimCell_121 .cse41) (< (+ .cse41 4294967295) v_arrayElimCell_121) (< (+ v_arrayElimCell_121 .cse3) (+ .cse41 .cse42 2)) (< 4294967294 .cse42)))) .cse43)) .cse18 .cse19) (or .cse18 .cse19) (or .cse6 (and (forall ((v_z_717 Int)) (or (<= 4294967296 v_z_717) (forall ((v_y_717 Int) (v_y_644 Int)) (let ((.cse48 (* 2 v_z_717)) (.cse49 (* v_y_717 4294967296))) (let ((.cse47 (+ v_z_717 .cse49)) (.cse45 (* v_y_644 4294967296)) (.cse46 (mod (+ .cse48 c_~sum3~0 c_~sum2~0) 4294967296)) (.cse44 (+ .cse48 .cse3 .cse49))) (or (= .cse44 (+ .cse45 8589934592 .cse46)) (< .cse47 .cse45) (<= (+ .cse45 4294967296) .cse47) (= (+ .cse45 4294967296 .cse46) .cse44))))) (< (+ v_z_717 .cse3) 4294967296))) (forall ((v_z_717 Int)) (or (< v_z_717 0) (<= 4294967296 v_z_717) (forall ((v_y_717 Int) (v_y_644 Int)) (let ((.cse54 (* 2 v_z_717)) (.cse55 (* v_y_717 4294967296))) (let ((.cse53 (+ v_z_717 .cse55)) (.cse51 (* v_y_644 4294967296)) (.cse52 (mod (+ .cse54 c_~sum3~0 c_~sum2~0) 4294967296)) (.cse50 (+ .cse54 .cse3 .cse55))) (or (= .cse50 (+ .cse51 8589934592 .cse52)) (< .cse53 .cse51) (<= (+ .cse51 4294967296) .cse53) (= .cse50 (+ .cse51 .cse52)) (= (+ .cse51 4294967296 .cse52) .cse50))))))) (or (< (+ .cse30 4294967295 (* (div (+ (- 1) (* (- 1) .cse30) .cse3) 4294967296) 4294967296)) .cse3) .cse18) (forall ((v_z_717 Int)) (or (<= 4294967296 (+ v_z_717 .cse3)) (< v_z_717 0) (forall ((v_y_717 Int) (v_y_644 Int)) (let ((.cse60 (* 2 v_z_717)) (.cse61 (* v_y_717 4294967296))) (let ((.cse56 (+ v_z_717 .cse61)) (.cse57 (* v_y_644 4294967296)) (.cse59 (mod (+ .cse60 c_~sum3~0 c_~sum2~0) 4294967296)) (.cse58 (+ .cse60 .cse3 .cse61))) (or (< .cse56 .cse57) (<= (+ .cse57 4294967296) .cse56) (= .cse58 (+ .cse57 .cse59)) (= (+ .cse57 4294967296 .cse59) .cse58))))))))) (or .cse18 (and .cse40 (or (forall ((v_arrayElimCell_121 Int) (v_y_644 Int)) (let ((.cse62 (* v_y_644 4294967296))) (or (<= (+ .cse62 4294967296) v_arrayElimCell_121) (< v_arrayElimCell_121 .cse62) (< (+ v_arrayElimCell_121 .cse3) (+ .cse62 (mod (+ c_~sum3~0 (* 2 v_arrayElimCell_121) c_~sum2~0) 4294967296) 2))))) .cse43)) .cse19))))) is different from false [2023-08-27 01:32:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-27 01:32:58,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9003708] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:32:58,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:32:58,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 35 [2023-08-27 01:32:58,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322473611] [2023-08-27 01:32:58,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:32:58,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-27 01:32:58,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:32:58,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-27 01:32:58,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1128, Unknown=1, NotChecked=68, Total=1332 [2023-08-27 01:32:58,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 333 [2023-08-27 01:32:58,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 1963 transitions, 35853 flow. Second operand has 37 states, 37 states have (on average 91.10810810810811) internal successors, (3371), 37 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:32:58,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:32:58,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 333 [2023-08-27 01:32:58,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:33:28,254 WARN L234 SmtUtils]: Spent 20.43s on a formula simplification. DAG size of input: 241 DAG size of output: 26 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 01:33:35,802 INFO L124 PetriNetUnfolderBase]: 10244/14886 cut-off events. [2023-08-27 01:33:35,802 INFO L125 PetriNetUnfolderBase]: For 235568/235568 co-relation queries the response was YES. [2023-08-27 01:33:35,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125591 conditions, 14886 events. 10244/14886 cut-off events. For 235568/235568 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 86095 event pairs, 1228 based on Foata normal form. 2/14888 useless extension candidates. Maximal degree in co-relation 125432. Up to 12091 conditions per place. [2023-08-27 01:33:36,002 INFO L140 encePairwiseOnDemand]: 317/333 looper letters, 1689 selfloop transitions, 706 changer transitions 5/2400 dead transitions. [2023-08-27 01:33:36,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 2400 transitions, 47008 flow [2023-08-27 01:33:36,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 01:33:36,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 01:33:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2471 transitions. [2023-08-27 01:33:36,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2968168168168168 [2023-08-27 01:33:36,005 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2471 transitions. [2023-08-27 01:33:36,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2471 transitions. [2023-08-27 01:33:36,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:33:36,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2471 transitions. [2023-08-27 01:33:36,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 98.84) internal successors, (2471), 25 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:33:36,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 333.0) internal successors, (8658), 26 states have internal predecessors, (8658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:33:36,010 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 333.0) internal successors, (8658), 26 states have internal predecessors, (8658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:33:36,010 INFO L175 Difference]: Start difference. First operand has 460 places, 1963 transitions, 35853 flow. Second operand 25 states and 2471 transitions. [2023-08-27 01:33:36,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 2400 transitions, 47008 flow [2023-08-27 01:33:39,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 2400 transitions, 45783 flow, removed 513 selfloop flow, removed 6 redundant places. [2023-08-27 01:33:39,504 INFO L231 Difference]: Finished difference. Result has 492 places, 2151 transitions, 40333 flow [2023-08-27 01:33:39,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=34670, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=545, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=40333, PETRI_PLACES=492, PETRI_TRANSITIONS=2151} [2023-08-27 01:33:39,506 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 454 predicate places. [2023-08-27 01:33:39,506 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 2151 transitions, 40333 flow [2023-08-27 01:33:39,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 91.10810810810811) internal successors, (3371), 37 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:33:39,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:33:39,506 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:33:39,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2023-08-27 01:33:39,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:33:39,709 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:33:39,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:33:39,709 INFO L85 PathProgramCache]: Analyzing trace with hash -844124070, now seen corresponding path program 11 times [2023-08-27 01:33:39,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:33:39,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185462872] [2023-08-27 01:33:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:33:39,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:33:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:33:40,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:33:40,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:33:40,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185462872] [2023-08-27 01:33:40,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185462872] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:33:40,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956881741] [2023-08-27 01:33:40,491 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:33:40,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:33:40,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:33:40,492 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:33:40,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-08-27 01:33:40,894 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:33:40,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:33:40,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 63 conjunts are in the unsatisfiable core [2023-08-27 01:33:40,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:33:40,946 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 01:33:41,014 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 28 treesize of output 23 [2023-08-27 01:33:41,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:33:41,079 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 39 treesize of output 35 [2023-08-27 01:33:41,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:33:41,157 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 39 treesize of output 35 [2023-08-27 01:33:41,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:33:41,223 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 39 treesize of output 35 [2023-08-27 01:33:41,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:33:41,701 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:33:41,701 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 36 [2023-08-27 01:33:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:33:41,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:33:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:33:42,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956881741] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:33:42,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:33:42,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 8] total 35 [2023-08-27 01:33:42,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17716377] [2023-08-27 01:33:42,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:33:42,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-27 01:33:42,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:33:42,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-27 01:33:42,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2023-08-27 01:33:42,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 333 [2023-08-27 01:33:42,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 2151 transitions, 40333 flow. Second operand has 37 states, 37 states have (on average 91.08108108108108) internal successors, (3370), 37 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:33:42,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:33:42,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 333 [2023-08-27 01:33:42,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:33:51,572 INFO L124 PetriNetUnfolderBase]: 10630/15430 cut-off events. [2023-08-27 01:33:51,572 INFO L125 PetriNetUnfolderBase]: For 256480/256480 co-relation queries the response was YES. [2023-08-27 01:33:51,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133593 conditions, 15430 events. 10630/15430 cut-off events. For 256480/256480 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 89375 event pairs, 1181 based on Foata normal form. 2/15432 useless extension candidates. Maximal degree in co-relation 133419. Up to 12589 conditions per place. [2023-08-27 01:33:51,810 INFO L140 encePairwiseOnDemand]: 318/333 looper letters, 1764 selfloop transitions, 811 changer transitions 2/2577 dead transitions. [2023-08-27 01:33:51,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 2577 transitions, 51499 flow [2023-08-27 01:33:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-27 01:33:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-27 01:33:51,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3358 transitions. [2023-08-27 01:33:51,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29659070835541423 [2023-08-27 01:33:51,813 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3358 transitions. [2023-08-27 01:33:51,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3358 transitions. [2023-08-27 01:33:51,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:33:51,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3358 transitions. [2023-08-27 01:33:51,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 98.76470588235294) internal successors, (3358), 34 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:33:51,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 333.0) internal successors, (11655), 35 states have internal predecessors, (11655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:33:51,821 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 333.0) internal successors, (11655), 35 states have internal predecessors, (11655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:33:51,821 INFO L175 Difference]: Start difference. First operand has 492 places, 2151 transitions, 40333 flow. Second operand 34 states and 3358 transitions. [2023-08-27 01:33:51,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 2577 transitions, 51499 flow [2023-08-27 01:33:55,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 2577 transitions, 50400 flow, removed 444 selfloop flow, removed 7 redundant places. [2023-08-27 01:33:55,652 INFO L231 Difference]: Finished difference. Result has 535 places, 2268 transitions, 43578 flow [2023-08-27 01:33:55,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=39254, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=701, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=43578, PETRI_PLACES=535, PETRI_TRANSITIONS=2268} [2023-08-27 01:33:55,653 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 497 predicate places. [2023-08-27 01:33:55,653 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 2268 transitions, 43578 flow [2023-08-27 01:33:55,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 91.08108108108108) internal successors, (3370), 37 states have internal predecessors, (3370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:33:55,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:33:55,654 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:33:55,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-08-27 01:33:55,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:33:55,859 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:33:55,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:33:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2057216439, now seen corresponding path program 21 times [2023-08-27 01:33:55,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:33:55,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522355472] [2023-08-27 01:33:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:33:55,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:33:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:33:56,659 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 01:33:56,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:33:56,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522355472] [2023-08-27 01:33:56,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522355472] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:33:56,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398197662] [2023-08-27 01:33:56,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:33:56,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:33:56,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:33:56,661 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:33:56,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-08-27 01:33:56,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:33:56,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:33:56,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 01:33:56,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:33:57,109 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:33:57,109 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 16 [2023-08-27 01:33:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:33:57,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:33:57,310 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:33:57,310 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 49 [2023-08-27 01:33:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:33:57,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398197662] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:33:57,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:33:57,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 6] total 23 [2023-08-27 01:33:57,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147235858] [2023-08-27 01:33:57,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:33:57,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 01:33:57,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:33:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 01:33:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2023-08-27 01:33:57,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 333 [2023-08-27 01:33:57,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 2268 transitions, 43578 flow. Second operand has 25 states, 25 states have (on average 97.52) internal successors, (2438), 25 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:33:57,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:33:57,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 333 [2023-08-27 01:33:57,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:34:04,678 INFO L124 PetriNetUnfolderBase]: 10892/15817 cut-off events. [2023-08-27 01:34:04,678 INFO L125 PetriNetUnfolderBase]: For 300637/301390 co-relation queries the response was YES. [2023-08-27 01:34:04,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141052 conditions, 15817 events. 10892/15817 cut-off events. For 300637/301390 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 93377 event pairs, 1108 based on Foata normal form. 458/16049 useless extension candidates. Maximal degree in co-relation 140860. Up to 13001 conditions per place. [2023-08-27 01:34:04,916 INFO L140 encePairwiseOnDemand]: 321/333 looper letters, 1708 selfloop transitions, 672 changer transitions 1/2466 dead transitions. [2023-08-27 01:34:04,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 2466 transitions, 51217 flow [2023-08-27 01:34:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 01:34:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 01:34:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1569 transitions. [2023-08-27 01:34:04,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3141141141141141 [2023-08-27 01:34:04,918 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1569 transitions. [2023-08-27 01:34:04,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1569 transitions. [2023-08-27 01:34:04,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:34:04,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1569 transitions. [2023-08-27 01:34:04,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 104.6) internal successors, (1569), 15 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:34:04,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 333.0) internal successors, (5328), 16 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:34:04,921 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 333.0) internal successors, (5328), 16 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:34:04,921 INFO L175 Difference]: Start difference. First operand has 535 places, 2268 transitions, 43578 flow. Second operand 15 states and 1569 transitions. [2023-08-27 01:34:04,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 2466 transitions, 51217 flow [2023-08-27 01:34:08,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 2466 transitions, 49692 flow, removed 326 selfloop flow, removed 14 redundant places. [2023-08-27 01:34:08,947 INFO L231 Difference]: Finished difference. Result has 537 places, 2312 transitions, 44509 flow [2023-08-27 01:34:08,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=42053, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=629, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=44509, PETRI_PLACES=537, PETRI_TRANSITIONS=2312} [2023-08-27 01:34:08,948 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 499 predicate places. [2023-08-27 01:34:08,948 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 2312 transitions, 44509 flow [2023-08-27 01:34:08,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 97.52) internal successors, (2438), 25 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:34:08,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:34:08,949 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:34:08,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-08-27 01:34:09,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2023-08-27 01:34:09,154 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:34:09,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:34:09,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2114054625, now seen corresponding path program 18 times [2023-08-27 01:34:09,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:34:09,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748382965] [2023-08-27 01:34:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:34:09,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:34:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:34:09,823 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 01:34:09,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:34:09,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748382965] [2023-08-27 01:34:09,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748382965] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:34:09,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522665029] [2023-08-27 01:34:09,824 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:34:09,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:34:09,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:34:09,825 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:34:09,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-08-27 01:34:10,210 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:34:10,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:34:10,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-27 01:34:10,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:34:10,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:34:10,690 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:34:10,690 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:34:10,695 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:34:10,695 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 17 [2023-08-27 01:34:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:34:10,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:34:11,070 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:34:11,070 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 51 [2023-08-27 01:34:21,442 WARN L234 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 92 DAG size of output: 37 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 01:34:31,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:34:31,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522665029] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:34:31,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:34:31,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 34 [2023-08-27 01:34:31,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134780887] [2023-08-27 01:34:31,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:34:31,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-27 01:34:31,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:34:31,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-27 01:34:31,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1118, Unknown=1, NotChecked=0, Total=1260 [2023-08-27 01:34:31,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 333 [2023-08-27 01:34:31,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 2312 transitions, 44509 flow. Second operand has 36 states, 36 states have (on average 101.13888888888889) internal successors, (3641), 36 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:34:31,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:34:31,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 333 [2023-08-27 01:34:31,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:34:54,626 WARN L234 SmtUtils]: Spent 12.66s on a formula simplification. DAG size of input: 41 DAG size of output: 40 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 01:34:58,636 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 01:35:00,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 01:35:02,724 WARN L539 Checker$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 01:35:06,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 01:35:10,134 WARN L539 Checker$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 01:35:14,639 INFO L124 PetriNetUnfolderBase]: 12148/17761 cut-off events. [2023-08-27 01:35:14,639 INFO L125 PetriNetUnfolderBase]: For 322894/322894 co-relation queries the response was YES. [2023-08-27 01:35:14,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158335 conditions, 17761 events. 12148/17761 cut-off events. For 322894/322894 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 106941 event pairs, 1296 based on Foata normal form. 1/17762 useless extension candidates. Maximal degree in co-relation 158142. Up to 14293 conditions per place. [2023-08-27 01:35:14,914 INFO L140 encePairwiseOnDemand]: 319/333 looper letters, 1923 selfloop transitions, 837 changer transitions 1/2761 dead transitions. [2023-08-27 01:35:14,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 2761 transitions, 57608 flow [2023-08-27 01:35:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 01:35:14,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 01:35:14,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2618 transitions. [2023-08-27 01:35:14,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32757757757757755 [2023-08-27 01:35:14,917 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2618 transitions. [2023-08-27 01:35:14,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2618 transitions. [2023-08-27 01:35:14,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:35:14,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2618 transitions. [2023-08-27 01:35:14,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 109.08333333333333) internal successors, (2618), 24 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:35:14,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 333.0) internal successors, (8325), 25 states have internal predecessors, (8325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:35:14,922 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 333.0) internal successors, (8325), 25 states have internal predecessors, (8325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:35:14,922 INFO L175 Difference]: Start difference. First operand has 537 places, 2312 transitions, 44509 flow. Second operand 24 states and 2618 transitions. [2023-08-27 01:35:14,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 2761 transitions, 57608 flow [2023-08-27 01:35:19,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 2761 transitions, 56648 flow, removed 195 selfloop flow, removed 10 redundant places. [2023-08-27 01:35:19,592 INFO L231 Difference]: Finished difference. Result has 558 places, 2501 transitions, 49951 flow [2023-08-27 01:35:19,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=43693, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=671, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=49951, PETRI_PLACES=558, PETRI_TRANSITIONS=2501} [2023-08-27 01:35:19,593 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 520 predicate places. [2023-08-27 01:35:19,593 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 2501 transitions, 49951 flow [2023-08-27 01:35:19,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 101.13888888888889) internal successors, (3641), 36 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:35:19,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:35:19,594 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:35:19,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-08-27 01:35:19,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:35:19,799 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:35:19,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:35:19,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1775087037, now seen corresponding path program 19 times [2023-08-27 01:35:19,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:35:19,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12502524] [2023-08-27 01:35:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:35:19,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:35:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:35:20,806 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 01:35:20,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:35:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12502524] [2023-08-27 01:35:20,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12502524] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:35:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483643883] [2023-08-27 01:35:20,806 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:35:20,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:35:20,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:35:20,807 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:35:20,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-08-27 01:35:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:35:21,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-27 01:35:21,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:35:21,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:35:21,599 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:35:21,599 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 35 [2023-08-27 01:35:21,694 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 01:35:21,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:35:22,090 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:35:22,091 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 51 [2023-08-27 01:35:40,535 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 01:35:40,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483643883] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:35:40,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:35:40,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 11] total 37 [2023-08-27 01:35:40,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425931175] [2023-08-27 01:35:40,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:35:40,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-27 01:35:40,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:35:40,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-27 01:35:40,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1279, Unknown=1, NotChecked=0, Total=1482 [2023-08-27 01:35:40,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 333 [2023-08-27 01:35:40,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 2501 transitions, 49951 flow. Second operand has 39 states, 39 states have (on average 91.0) internal successors, (3549), 39 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:35:40,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:35:40,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 333 [2023-08-27 01:35:40,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:35:59,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 01:36:00,915 INFO L124 PetriNetUnfolderBase]: 13324/19569 cut-off events. [2023-08-27 01:36:00,915 INFO L125 PetriNetUnfolderBase]: For 378348/378348 co-relation queries the response was YES. [2023-08-27 01:36:01,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179202 conditions, 19569 events. 13324/19569 cut-off events. For 378348/378348 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 120407 event pairs, 1581 based on Foata normal form. 6/19575 useless extension candidates. Maximal degree in co-relation 179000. Up to 15882 conditions per place. [2023-08-27 01:36:01,244 INFO L140 encePairwiseOnDemand]: 317/333 looper letters, 2196 selfloop transitions, 881 changer transitions 26/3103 dead transitions. [2023-08-27 01:36:01,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 3103 transitions, 64860 flow [2023-08-27 01:36:01,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-27 01:36:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-27 01:36:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3923 transitions. [2023-08-27 01:36:01,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29451951951951955 [2023-08-27 01:36:01,248 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3923 transitions. [2023-08-27 01:36:01,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3923 transitions. [2023-08-27 01:36:01,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:36:01,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3923 transitions. [2023-08-27 01:36:01,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 98.075) internal successors, (3923), 40 states have internal predecessors, (3923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:36:01,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 333.0) internal successors, (13653), 41 states have internal predecessors, (13653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:36:01,257 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 333.0) internal successors, (13653), 41 states have internal predecessors, (13653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:36:01,257 INFO L175 Difference]: Start difference. First operand has 558 places, 2501 transitions, 49951 flow. Second operand 40 states and 3923 transitions. [2023-08-27 01:36:01,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 3103 transitions, 64860 flow [2023-08-27 01:36:06,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 3103 transitions, 62072 flow, removed 1031 selfloop flow, removed 8 redundant places. [2023-08-27 01:36:06,987 INFO L231 Difference]: Finished difference. Result has 607 places, 2771 transitions, 54577 flow [2023-08-27 01:36:06,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=47363, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=636, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=54577, PETRI_PLACES=607, PETRI_TRANSITIONS=2771} [2023-08-27 01:36:06,989 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 569 predicate places. [2023-08-27 01:36:06,990 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 2771 transitions, 54577 flow [2023-08-27 01:36:06,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 91.0) internal successors, (3549), 39 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:36:06,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:36:06,990 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:36:06,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2023-08-27 01:36:07,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2023-08-27 01:36:07,195 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:36:07,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:36:07,195 INFO L85 PathProgramCache]: Analyzing trace with hash 425742360, now seen corresponding path program 12 times [2023-08-27 01:36:07,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:36:07,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178966358] [2023-08-27 01:36:07,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:36:07,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:36:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:36:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:36:07,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:36:07,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178966358] [2023-08-27 01:36:07,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178966358] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:36:07,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020450597] [2023-08-27 01:36:07,772 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:36:07,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:36:07,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:36:07,773 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:36:07,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-08-27 01:36:07,993 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 01:36:07,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:36:07,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 01:36:07,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:36:08,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:36:08,292 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:36:08,292 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 20 [2023-08-27 01:36:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:36:08,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:36:08,720 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-27 01:36:08,721 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 51 [2023-08-27 01:36:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:36:12,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020450597] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:36:12,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:36:12,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 30 [2023-08-27 01:36:12,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674020516] [2023-08-27 01:36:12,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:36:12,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 01:36:12,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:36:12,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 01:36:12,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2023-08-27 01:36:12,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 333 [2023-08-27 01:36:12,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 2771 transitions, 54577 flow. Second operand has 32 states, 32 states have (on average 101.40625) internal successors, (3245), 32 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:36:12,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:36:12,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 333 [2023-08-27 01:36:12,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:36:26,362 INFO L124 PetriNetUnfolderBase]: 14445/21276 cut-off events. [2023-08-27 01:36:26,362 INFO L125 PetriNetUnfolderBase]: For 415647/415647 co-relation queries the response was YES. [2023-08-27 01:36:26,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198808 conditions, 21276 events. 14445/21276 cut-off events. For 415647/415647 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 133216 event pairs, 2321 based on Foata normal form. 1/21277 useless extension candidates. Maximal degree in co-relation 198587. Up to 19100 conditions per place. [2023-08-27 01:36:26,752 INFO L140 encePairwiseOnDemand]: 317/333 looper letters, 2662 selfloop transitions, 670 changer transitions 1/3333 dead transitions. [2023-08-27 01:36:26,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 3333 transitions, 71285 flow [2023-08-27 01:36:26,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-27 01:36:26,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-27 01:36:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4187 transitions. [2023-08-27 01:36:26,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3223993223993224 [2023-08-27 01:36:26,755 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 4187 transitions. [2023-08-27 01:36:26,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 4187 transitions. [2023-08-27 01:36:26,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:36:26,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 4187 transitions. [2023-08-27 01:36:26,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 107.35897435897436) internal successors, (4187), 39 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:36:26,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 333.0) internal successors, (13320), 40 states have internal predecessors, (13320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:36:26,764 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 333.0) internal successors, (13320), 40 states have internal predecessors, (13320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:36:26,764 INFO L175 Difference]: Start difference. First operand has 607 places, 2771 transitions, 54577 flow. Second operand 39 states and 4187 transitions. [2023-08-27 01:36:26,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 3333 transitions, 71285 flow [2023-08-27 01:36:33,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 3333 transitions, 69760 flow, removed 561 selfloop flow, removed 11 redundant places. [2023-08-27 01:36:33,974 INFO L231 Difference]: Finished difference. Result has 647 places, 3078 transitions, 62219 flow [2023-08-27 01:36:33,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=53196, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=62219, PETRI_PLACES=647, PETRI_TRANSITIONS=3078} [2023-08-27 01:36:33,976 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 609 predicate places. [2023-08-27 01:36:33,976 INFO L495 AbstractCegarLoop]: Abstraction has has 647 places, 3078 transitions, 62219 flow [2023-08-27 01:36:33,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 101.40625) internal successors, (3245), 32 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:36:33,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:36:33,976 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:36:33,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2023-08-27 01:36:34,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2023-08-27 01:36:34,181 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:36:34,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:36:34,182 INFO L85 PathProgramCache]: Analyzing trace with hash -714910274, now seen corresponding path program 13 times [2023-08-27 01:36:34,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:36:34,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764143049] [2023-08-27 01:36:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:36:34,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:36:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:36:34,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:36:34,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:36:34,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764143049] [2023-08-27 01:36:34,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764143049] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:36:34,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329763716] [2023-08-27 01:36:34,986 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:36:34,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:36:34,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:36:34,987 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:36:34,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-08-27 01:36:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:36:35,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-27 01:36:35,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:36:35,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:36:35,728 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 20 [2023-08-27 01:36:35,929 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:36:35,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:36:35,932 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:36:35,932 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 15 [2023-08-27 01:36:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:36:35,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:36:36,220 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3273 (Array Int Int)) (v_thread3Thread1of1ForFork2_~i~2_244 Int)) (or (< v_thread3Thread1of1ForFork2_~i~2_244 1) (<= c_~N~0 v_thread3Thread1of1ForFork2_~i~2_244) (= (mod (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3273) c_~A~0.base))) (+ (select .cse0 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork2_~i~2_244 4))) c_~sum3~0 c_~sum2~0 (select .cse0 c_~A~0.offset))) 4294967296) (mod c_~sum1~0 4294967296)))) is different from false [2023-08-27 01:36:36,430 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-27 01:36:36,431 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 82 [2023-08-27 01:36:36,440 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 01:36:36,440 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-08-27 01:36:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-27 01:36:41,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329763716] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:36:41,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:36:41,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 37 [2023-08-27 01:36:41,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819542114] [2023-08-27 01:36:41,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:36:41,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-27 01:36:41,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:36:41,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-27 01:36:41,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1243, Unknown=1, NotChecked=72, Total=1482 [2023-08-27 01:36:41,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 333 [2023-08-27 01:36:41,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 3078 transitions, 62219 flow. Second operand has 39 states, 39 states have (on average 91.0) internal successors, (3549), 39 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:36:41,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:36:41,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 333 [2023-08-27 01:36:41,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:36:56,267 INFO L124 PetriNetUnfolderBase]: 16333/24035 cut-off events. [2023-08-27 01:36:56,267 INFO L125 PetriNetUnfolderBase]: For 521358/521358 co-relation queries the response was YES. [2023-08-27 01:36:56,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227804 conditions, 24035 events. 16333/24035 cut-off events. For 521358/521358 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 153019 event pairs, 1885 based on Foata normal form. 3/24038 useless extension candidates. Maximal degree in co-relation 227569. Up to 18014 conditions per place. [2023-08-27 01:36:56,891 INFO L140 encePairwiseOnDemand]: 318/333 looper letters, 2587 selfloop transitions, 1216 changer transitions 2/3805 dead transitions. [2023-08-27 01:36:56,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 673 places, 3805 transitions, 82710 flow [2023-08-27 01:36:56,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-27 01:36:56,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-27 01:36:56,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2696 transitions. [2023-08-27 01:36:56,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2998554109665221 [2023-08-27 01:36:56,894 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2696 transitions. [2023-08-27 01:36:56,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2696 transitions. [2023-08-27 01:36:56,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:36:56,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2696 transitions. [2023-08-27 01:36:56,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 99.85185185185185) internal successors, (2696), 27 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:36:56,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 333.0) internal successors, (9324), 28 states have internal predecessors, (9324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:36:56,900 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 333.0) internal successors, (9324), 28 states have internal predecessors, (9324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:36:56,900 INFO L175 Difference]: Start difference. First operand has 647 places, 3078 transitions, 62219 flow. Second operand 27 states and 2696 transitions. [2023-08-27 01:36:56,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 673 places, 3805 transitions, 82710 flow [2023-08-27 01:37:06,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 3805 transitions, 80483 flow, removed 622 selfloop flow, removed 16 redundant places. [2023-08-27 01:37:06,511 INFO L231 Difference]: Finished difference. Result has 672 places, 3452 transitions, 72001 flow [2023-08-27 01:37:06,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=60026, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3078, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=936, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2054, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=72001, PETRI_PLACES=672, PETRI_TRANSITIONS=3452} [2023-08-27 01:37:06,513 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 634 predicate places. [2023-08-27 01:37:06,513 INFO L495 AbstractCegarLoop]: Abstraction has has 672 places, 3452 transitions, 72001 flow [2023-08-27 01:37:06,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 91.0) internal successors, (3549), 39 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:37:06,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:37:06,514 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:37:06,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2023-08-27 01:37:06,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:37:06,719 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:37:06,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:37:06,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2113943682, now seen corresponding path program 14 times [2023-08-27 01:37:06,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:37:06,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292283829] [2023-08-27 01:37:06,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:37:06,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:37:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:37:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:37:07,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:37:07,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292283829] [2023-08-27 01:37:07,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292283829] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:37:07,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480535521] [2023-08-27 01:37:07,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:37:07,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:37:07,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:37:07,346 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:37:07,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-08-27 01:37:07,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:37:07,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:37:07,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-27 01:37:07,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:37:07,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:37:07,949 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 27 treesize of output 25 [2023-08-27 01:37:08,055 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:37:08,055 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2023-08-27 01:37:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:37:08,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:37:10,338 WARN L839 $PredicateComparison]: unable to prove that (forall ((thread3Thread1of1ForFork2_~i~2 Int) (v_ArrVal_3322 (Array Int Int))) (or (= (mod (+ c_~sum3~0 c_~sum2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3322) c_~A~0.base) (+ c_~A~0.offset (* thread3Thread1of1ForFork2_~i~2 4)))) 4294967296) (mod c_~sum1~0 4294967296)) (< (+ thread3Thread1of1ForFork2_~i~2 1) c_~N~0) (<= c_~N~0 thread3Thread1of1ForFork2_~i~2))) is different from false [2023-08-27 01:37:12,356 WARN L839 $PredicateComparison]: unable to prove that (forall ((thread3Thread1of1ForFork2_~i~2 Int) (v_ArrVal_3322 (Array Int Int))) (or (= (mod (+ c_~sum3~0 c_~sum2~0 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* c_thread2Thread1of1ForFork1_~i~1 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3322) c_~A~0.base) (+ c_~A~0.offset (* thread3Thread1of1ForFork2_~i~2 4)))) 4294967296) (mod c_~sum1~0 4294967296)) (< (+ thread3Thread1of1ForFork2_~i~2 1) c_~N~0) (<= c_~N~0 thread3Thread1of1ForFork2_~i~2))) is different from false [2023-08-27 01:37:14,374 WARN L839 $PredicateComparison]: unable to prove that (forall ((thread3Thread1of1ForFork2_~i~2 Int) (v_ArrVal_3322 (Array Int Int))) (or (= (mod c_~sum1~0 4294967296) (mod (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) c_~sum3~0 c_~sum2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3322) c_~A~0.base) (+ c_~A~0.offset (* thread3Thread1of1ForFork2_~i~2 4)))) 4294967296)) (< (+ thread3Thread1of1ForFork2_~i~2 1) c_~N~0) (<= c_~N~0 thread3Thread1of1ForFork2_~i~2))) is different from false [2023-08-27 01:37:16,400 WARN L839 $PredicateComparison]: unable to prove that (forall ((thread3Thread1of1ForFork2_~i~2 Int) (v_ArrVal_3322 (Array Int Int))) (or (< (+ thread3Thread1of1ForFork2_~i~2 1) c_~N~0) (let ((.cse0 (select |c_#memory_int| c_~A~0.base))) (= (mod (+ c_~sum1~0 (select .cse0 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4)))) 4294967296) (mod (+ (select .cse0 c_~A~0.offset) c_~sum3~0 c_~sum2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3322) c_~A~0.base) (+ c_~A~0.offset (* thread3Thread1of1ForFork2_~i~2 4)))) 4294967296))) (<= c_~N~0 thread3Thread1of1ForFork2_~i~2))) is different from false [2023-08-27 01:37:16,439 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:37:16,439 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 88 [2023-08-27 01:37:16,445 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 18 [2023-08-27 01:37:20,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-08-27 01:37:20,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480535521] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:37:20,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:37:20,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2023-08-27 01:37:20,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484126132] [2023-08-27 01:37:20,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:37:20,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-27 01:37:20,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:37:20,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-27 01:37:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=980, Unknown=4, NotChecked=268, Total=1406 [2023-08-27 01:37:20,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 333 [2023-08-27 01:37:20,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 672 places, 3452 transitions, 72001 flow. Second operand has 38 states, 38 states have (on average 97.05263157894737) internal successors, (3688), 38 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:37:20,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:37:20,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 333 [2023-08-27 01:37:20,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:37:37,282 INFO L124 PetriNetUnfolderBase]: 16701/24635 cut-off events. [2023-08-27 01:37:37,282 INFO L125 PetriNetUnfolderBase]: For 578717/578717 co-relation queries the response was YES. [2023-08-27 01:37:37,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242264 conditions, 24635 events. 16701/24635 cut-off events. For 578717/578717 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 158141 event pairs, 2386 based on Foata normal form. 2/24637 useless extension candidates. Maximal degree in co-relation 242015. Up to 21275 conditions per place. [2023-08-27 01:37:37,819 INFO L140 encePairwiseOnDemand]: 320/333 looper letters, 2941 selfloop transitions, 756 changer transitions 10/3707 dead transitions. [2023-08-27 01:37:37,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 3707 transitions, 83859 flow [2023-08-27 01:37:37,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 01:37:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 01:37:37,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1692 transitions. [2023-08-27 01:37:37,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31756756756756754 [2023-08-27 01:37:37,821 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1692 transitions. [2023-08-27 01:37:37,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1692 transitions. [2023-08-27 01:37:37,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:37:37,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1692 transitions. [2023-08-27 01:37:37,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 105.75) internal successors, (1692), 16 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:37:37,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 333.0) internal successors, (5661), 17 states have internal predecessors, (5661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:37:37,825 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 333.0) internal successors, (5661), 17 states have internal predecessors, (5661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:37:37,825 INFO L175 Difference]: Start difference. First operand has 672 places, 3452 transitions, 72001 flow. Second operand 16 states and 1692 transitions. [2023-08-27 01:37:37,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 3707 transitions, 83859 flow [2023-08-27 01:37:49,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 3707 transitions, 81287 flow, removed 1217 selfloop flow, removed 6 redundant places. [2023-08-27 01:37:49,325 INFO L231 Difference]: Finished difference. Result has 686 places, 3508 transitions, 72681 flow [2023-08-27 01:37:49,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=69453, PETRI_DIFFERENCE_MINUEND_PLACES=666, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=707, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=72681, PETRI_PLACES=686, PETRI_TRANSITIONS=3508} [2023-08-27 01:37:49,327 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 648 predicate places. [2023-08-27 01:37:49,327 INFO L495 AbstractCegarLoop]: Abstraction has has 686 places, 3508 transitions, 72681 flow [2023-08-27 01:37:49,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 97.05263157894737) internal successors, (3688), 38 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:37:49,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:37:49,327 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:37:49,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2023-08-27 01:37:49,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:37:49,528 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:37:49,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:37:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash 112124206, now seen corresponding path program 15 times [2023-08-27 01:37:49,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:37:49,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927945901] [2023-08-27 01:37:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:37:49,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:37:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:37:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:37:50,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:37:50,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927945901] [2023-08-27 01:37:50,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927945901] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:37:50,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959477892] [2023-08-27 01:37:50,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:37:50,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:37:50,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:37:50,251 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:37:50,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-08-27 01:37:50,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 01:37:50,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:37:50,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-27 01:37:50,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:37:50,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:37:50,820 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 20 [2023-08-27 01:37:51,072 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:37:51,073 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2023-08-27 01:37:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:37:51,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:37:53,496 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3371 (Array Int Int)) (thread3Thread1of1ForFork2_~i~2 Int)) (or (= (mod (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3371) c_~A~0.base))) (+ (select .cse0 (+ c_~A~0.offset (* thread3Thread1of1ForFork2_~i~2 4))) c_~sum3~0 c_~sum2~0 (select .cse0 c_~A~0.offset))) 4294967296) (mod c_~sum1~0 4294967296)) (< (+ thread3Thread1of1ForFork2_~i~2 1) c_~N~0) (<= c_~N~0 thread3Thread1of1ForFork2_~i~2))) is different from false [2023-08-27 01:37:55,525 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3371 (Array Int Int)) (thread3Thread1of1ForFork2_~i~2 Int)) (or (< (+ thread3Thread1of1ForFork2_~i~2 1) c_~N~0) (= (mod (+ c_~sum1~0 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4)))) 4294967296) (mod (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3371) c_~A~0.base))) (+ (select .cse0 (+ c_~A~0.offset (* thread3Thread1of1ForFork2_~i~2 4))) c_~sum3~0 c_~sum2~0 (select .cse0 c_~A~0.offset))) 4294967296)) (<= c_~N~0 thread3Thread1of1ForFork2_~i~2))) is different from false [2023-08-27 01:37:55,567 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:37:55,567 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 90 [2023-08-27 01:37:55,580 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:37:55,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-08-27 01:38:00,061 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 01:38:04,088 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 01:38:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-08-27 01:38:09,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959477892] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:38:09,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:38:09,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 36 [2023-08-27 01:38:09,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85723477] [2023-08-27 01:38:09,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:38:09,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-27 01:38:09,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:38:09,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-27 01:38:09,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1137, Unknown=2, NotChecked=138, Total=1406 [2023-08-27 01:38:09,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 333 [2023-08-27 01:38:09,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 3508 transitions, 72681 flow. Second operand has 38 states, 38 states have (on average 90.94736842105263) internal successors, (3456), 38 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:38:09,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:38:09,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 333 [2023-08-27 01:38:09,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:38:28,080 INFO L124 PetriNetUnfolderBase]: 17531/25895 cut-off events. [2023-08-27 01:38:28,081 INFO L125 PetriNetUnfolderBase]: For 590980/590980 co-relation queries the response was YES. [2023-08-27 01:38:28,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253028 conditions, 25895 events. 17531/25895 cut-off events. For 590980/590980 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 167780 event pairs, 2561 based on Foata normal form. 1/25896 useless extension candidates. Maximal degree in co-relation 252775. Up to 22041 conditions per place. [2023-08-27 01:38:28,677 INFO L140 encePairwiseOnDemand]: 319/333 looper letters, 3010 selfloop transitions, 937 changer transitions 5/3952 dead transitions. [2023-08-27 01:38:28,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 3952 transitions, 88653 flow [2023-08-27 01:38:28,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 01:38:28,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 01:38:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2370 transitions. [2023-08-27 01:38:28,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29654654654654655 [2023-08-27 01:38:28,679 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2370 transitions. [2023-08-27 01:38:28,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2370 transitions. [2023-08-27 01:38:28,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:38:28,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2370 transitions. [2023-08-27 01:38:28,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 98.75) internal successors, (2370), 24 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:38:28,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 333.0) internal successors, (8325), 25 states have internal predecessors, (8325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:38:28,684 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 333.0) internal successors, (8325), 25 states have internal predecessors, (8325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:38:28,684 INFO L175 Difference]: Start difference. First operand has 686 places, 3508 transitions, 72681 flow. Second operand 24 states and 2370 transitions. [2023-08-27 01:38:28,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 3952 transitions, 88653 flow [2023-08-27 01:38:41,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 700 places, 3952 transitions, 87499 flow, removed 239 selfloop flow, removed 9 redundant places. [2023-08-27 01:38:41,421 INFO L231 Difference]: Finished difference. Result has 717 places, 3720 transitions, 79501 flow [2023-08-27 01:38:41,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=71572, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=765, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=79501, PETRI_PLACES=717, PETRI_TRANSITIONS=3720} [2023-08-27 01:38:41,423 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 679 predicate places. [2023-08-27 01:38:41,423 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 3720 transitions, 79501 flow [2023-08-27 01:38:41,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 90.94736842105263) internal successors, (3456), 38 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:38:41,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:38:41,424 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:38:41,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2023-08-27 01:38:41,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2023-08-27 01:38:41,629 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:38:41,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:38:41,630 INFO L85 PathProgramCache]: Analyzing trace with hash -660255884, now seen corresponding path program 16 times [2023-08-27 01:38:41,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:38:41,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433894676] [2023-08-27 01:38:41,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:38:41,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:38:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:38:42,382 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:38:42,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:38:42,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433894676] [2023-08-27 01:38:42,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433894676] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:38:42,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406930419] [2023-08-27 01:38:42,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:38:42,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:38:42,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:38:42,384 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:38:42,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-08-27 01:38:42,742 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:38:42,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:38:42,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 63 conjunts are in the unsatisfiable core [2023-08-27 01:38:42,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:38:42,804 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 01:38:42,853 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 28 treesize of output 23 [2023-08-27 01:38:42,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:38:42,928 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 39 treesize of output 35 [2023-08-27 01:38:43,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:38:43,005 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 39 treesize of output 35 [2023-08-27 01:38:43,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:38:43,262 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 52 treesize of output 44 [2023-08-27 01:38:43,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:38:43,531 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:38:43,531 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 36 [2023-08-27 01:38:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:38:43,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:38:44,068 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_3426 (Array Int Int))) (or (= (mod (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3426) c_~A~0.base))) (+ (select .cse0 (+ c_~A~0.offset (* ~M~0 4))) (select .cse0 c_~A~0.offset) c_~sum3~0 c_~sum2~0)) 4294967296) (mod c_~sum1~0 4294967296)) (<= ~M~0 0) (< 1 ~M~0))) is different from false [2023-08-27 01:38:44,379 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_3426 (Array Int Int))) (or (= (mod (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3426) c_~A~0.base))) (+ (select .cse0 (+ c_~A~0.offset (* ~M~0 4))) (select .cse0 c_~A~0.offset) c_~sum3~0 c_~sum2~0)) 4294967296) (mod (let ((.cse1 (select |c_#memory_int| c_~A~0.base))) (+ (select .cse1 c_~A~0.offset) c_~sum1~0 (select .cse1 (+ c_~A~0.offset 4)))) 4294967296)) (<= ~M~0 0) (< 1 ~M~0))) is different from false [2023-08-27 01:38:44,402 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_3425 (Array Int Int)) (v_ArrVal_3426 (Array Int Int))) (or (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3425))) (= (mod (let ((.cse0 (select .cse1 c_~A~0.base))) (+ (select .cse0 (+ c_~A~0.offset 4)) c_~sum1~0 (select .cse0 c_~A~0.offset))) 4294967296) (mod (let ((.cse2 (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3426) c_~A~0.base))) (+ c_~sum3~0 (select .cse2 (+ c_~A~0.offset (* ~M~0 4))) c_~sum2~0 (select .cse2 c_~A~0.offset))) 4294967296))) (<= ~M~0 0) (< 1 ~M~0))) is different from false [2023-08-27 01:38:44,427 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_3424 (Array Int Int)) (v_ArrVal_3425 (Array Int Int)) (v_ArrVal_3426 (Array Int Int))) (or (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_3424) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3425))) (= (mod (let ((.cse0 (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3426) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (+ (select .cse0 (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) c_~sum3~0 (select .cse0 |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) c_~sum2~0)) 4294967296) (mod (let ((.cse2 (select .cse1 |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (+ (select .cse2 |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) c_~sum1~0 (select .cse2 (+ |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| 4)))) 4294967296))) (<= ~M~0 0) (< 1 ~M~0))) is different from false [2023-08-27 01:38:44,452 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_fresh_uint_array_#t~nondet21#1_348| Int) (~M~0 Int) (v_ArrVal_3424 (Array Int Int)) (v_ArrVal_3425 (Array Int Int)) (v_ArrVal_3426 (Array Int Int))) (or (< 2147483647 |v_ULTIMATE.start_create_fresh_uint_array_#t~nondet21#1_348|) (< (+ |v_ULTIMATE.start_create_fresh_uint_array_#t~nondet21#1_348| 2147483648) 0) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (+ |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (* |c_ULTIMATE.start_create_fresh_uint_array_~i~3#1| 4)) |v_ULTIMATE.start_create_fresh_uint_array_#t~nondet21#1_348|)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_3424) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3425))) (= (mod (let ((.cse0 (select .cse1 |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| 4)) c_~sum1~0 (select .cse0 |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|))) 4294967296) (mod (let ((.cse2 (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3426) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (+ (select .cse2 |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) c_~sum3~0 c_~sum2~0 (select .cse2 (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)))) 4294967296))) (<= ~M~0 0) (< 1 ~M~0))) is different from false [2023-08-27 01:38:44,470 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:38:44,470 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 146 treesize of output 92 [2023-08-27 01:38:44,541 INFO L322 Elim1Store]: treesize reduction 30, result has 56.5 percent of original size [2023-08-27 01:38:44,542 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 40488 treesize of output 36396 [2023-08-27 01:38:44,566 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:38:44,566 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 108 [2023-08-27 01:38:44,587 INFO L322 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-27 01:38:44,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 242 treesize of output 226 [2023-08-27 01:38:44,612 INFO L322 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-27 01:38:44,612 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 222 treesize of output 186 [2023-08-27 01:38:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-08-27 01:38:53,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406930419] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:38:53,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:38:53,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 41 [2023-08-27 01:38:53,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425302930] [2023-08-27 01:38:53,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:38:53,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-08-27 01:38:53,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:38:53,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-08-27 01:38:53,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1268, Unknown=15, NotChecked=380, Total=1806 [2023-08-27 01:38:53,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 333 [2023-08-27 01:38:53,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 3720 transitions, 79501 flow. Second operand has 43 states, 43 states have (on average 90.81395348837209) internal successors, (3905), 43 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:38:53,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:38:53,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 333 [2023-08-27 01:38:53,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:39:16,288 INFO L124 PetriNetUnfolderBase]: 19344/28477 cut-off events. [2023-08-27 01:39:16,288 INFO L125 PetriNetUnfolderBase]: For 716518/716518 co-relation queries the response was YES. [2023-08-27 01:39:16,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285858 conditions, 28477 events. 19344/28477 cut-off events. For 716518/716518 co-relation queries the response was YES. Maximal size of possible extension queue 1408. Compared 186752 event pairs, 2095 based on Foata normal form. 6/28483 useless extension candidates. Maximal degree in co-relation 285587. Up to 20210 conditions per place. [2023-08-27 01:39:17,051 INFO L140 encePairwiseOnDemand]: 318/333 looper letters, 2629 selfloop transitions, 1875 changer transitions 8/4512 dead transitions. [2023-08-27 01:39:17,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 4512 transitions, 103430 flow [2023-08-27 01:39:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-27 01:39:17,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-27 01:39:17,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3669 transitions. [2023-08-27 01:39:17,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29778427075724373 [2023-08-27 01:39:17,054 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3669 transitions. [2023-08-27 01:39:17,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3669 transitions. [2023-08-27 01:39:17,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:39:17,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3669 transitions. [2023-08-27 01:39:17,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 99.16216216216216) internal successors, (3669), 37 states have internal predecessors, (3669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:39:17,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 333.0) internal successors, (12654), 38 states have internal predecessors, (12654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:39:17,062 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 333.0) internal successors, (12654), 38 states have internal predecessors, (12654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:39:17,062 INFO L175 Difference]: Start difference. First operand has 717 places, 3720 transitions, 79501 flow. Second operand 37 states and 3669 transitions. [2023-08-27 01:39:17,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 4512 transitions, 103430 flow [2023-08-27 01:39:31,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 747 places, 4512 transitions, 101578 flow, removed 806 selfloop flow, removed 6 redundant places. [2023-08-27 01:39:31,932 INFO L231 Difference]: Finished difference. Result has 765 places, 4086 transitions, 91690 flow [2023-08-27 01:39:31,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=77807, PETRI_DIFFERENCE_MINUEND_PLACES=711, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1566, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2026, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=91690, PETRI_PLACES=765, PETRI_TRANSITIONS=4086} [2023-08-27 01:39:31,934 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 727 predicate places. [2023-08-27 01:39:31,934 INFO L495 AbstractCegarLoop]: Abstraction has has 765 places, 4086 transitions, 91690 flow [2023-08-27 01:39:31,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 90.81395348837209) internal successors, (3905), 43 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:39:31,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:39:31,935 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:39:31,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2023-08-27 01:39:32,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-08-27 01:39:32,135 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:39:32,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:39:32,136 INFO L85 PathProgramCache]: Analyzing trace with hash 413360190, now seen corresponding path program 17 times [2023-08-27 01:39:32,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:39:32,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050902378] [2023-08-27 01:39:32,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:39:32,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:39:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:39:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:39:32,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:39:32,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050902378] [2023-08-27 01:39:32,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050902378] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:39:32,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089331179] [2023-08-27 01:39:32,931 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:39:32,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:39:32,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:39:32,932 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:39:32,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-08-27 01:39:33,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 01:39:33,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:39:33,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-27 01:39:33,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:39:33,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:39:33,617 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 20 [2023-08-27 01:39:33,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:39:33,809 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:39:33,809 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 25 [2023-08-27 01:39:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:39:33,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:39:34,343 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3475 (Array Int Int)) (~M~0 Int)) (or (= (mod (+ c_~sum1~0 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4)))) 4294967296) (mod (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_3475) c_~A~0.base))) (+ c_~sum3~0 (select .cse0 (+ c_~A~0.offset (* ~M~0 4))) c_~sum2~0 (select .cse0 c_~A~0.offset))) 4294967296)) (<= ~M~0 0) (< 1 ~M~0))) is different from false [2023-08-27 01:39:34,411 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-27 01:39:34,411 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 82 [2023-08-27 01:39:34,421 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 01:39:34,421 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-08-27 01:39:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2023-08-27 01:39:37,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089331179] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:39:37,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:39:37,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 11] total 36 [2023-08-27 01:39:37,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602489706] [2023-08-27 01:39:37,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:39:37,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-27 01:39:37,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:39:37,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-27 01:39:37,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1147, Unknown=6, NotChecked=70, Total=1406 [2023-08-27 01:39:37,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 333 [2023-08-27 01:39:37,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 765 places, 4086 transitions, 91690 flow. Second operand has 38 states, 38 states have (on average 91.0) internal successors, (3458), 38 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:39:37,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:39:37,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 333 [2023-08-27 01:39:37,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:39:59,990 INFO L124 PetriNetUnfolderBase]: 19996/29455 cut-off events. [2023-08-27 01:39:59,990 INFO L125 PetriNetUnfolderBase]: For 790219/790219 co-relation queries the response was YES. [2023-08-27 01:40:00,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307430 conditions, 29455 events. 19996/29455 cut-off events. For 790219/790219 co-relation queries the response was YES. Maximal size of possible extension queue 1419. Compared 193849 event pairs, 2375 based on Foata normal form. 1/29456 useless extension candidates. Maximal degree in co-relation 307140. Up to 24716 conditions per place. [2023-08-27 01:40:01,028 INFO L140 encePairwiseOnDemand]: 319/333 looper letters, 3192 selfloop transitions, 1252 changer transitions 5/4449 dead transitions. [2023-08-27 01:40:01,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 4449 transitions, 107323 flow [2023-08-27 01:40:01,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 01:40:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 01:40:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2358 transitions. [2023-08-27 01:40:01,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29504504504504503 [2023-08-27 01:40:01,030 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2358 transitions. [2023-08-27 01:40:01,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2358 transitions. [2023-08-27 01:40:01,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:40:01,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2358 transitions. [2023-08-27 01:40:01,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 98.25) internal successors, (2358), 24 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:40:01,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 333.0) internal successors, (8325), 25 states have internal predecessors, (8325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:40:01,036 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 333.0) internal successors, (8325), 25 states have internal predecessors, (8325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:40:01,036 INFO L175 Difference]: Start difference. First operand has 765 places, 4086 transitions, 91690 flow. Second operand 24 states and 2358 transitions. [2023-08-27 01:40:01,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 788 places, 4449 transitions, 107323 flow [2023-08-27 01:40:19,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 775 places, 4449 transitions, 103933 flow, removed 1361 selfloop flow, removed 13 redundant places. [2023-08-27 01:40:19,596 INFO L231 Difference]: Finished difference. Result has 787 places, 4239 transitions, 95896 flow [2023-08-27 01:40:19,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=88653, PETRI_DIFFERENCE_MINUEND_PLACES=752, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=95896, PETRI_PLACES=787, PETRI_TRANSITIONS=4239} [2023-08-27 01:40:19,597 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 749 predicate places. [2023-08-27 01:40:19,597 INFO L495 AbstractCegarLoop]: Abstraction has has 787 places, 4239 transitions, 95896 flow [2023-08-27 01:40:19,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 91.0) internal successors, (3458), 38 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:40:19,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:40:19,598 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:40:19,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-08-27 01:40:19,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:19,804 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-27 01:40:19,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:40:19,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1012327613, now seen corresponding path program 22 times [2023-08-27 01:40:19,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:40:19,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280500399] [2023-08-27 01:40:19,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:40:19,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:40:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:40:20,444 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 01:40:20,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:40:20,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280500399] [2023-08-27 01:40:20,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280500399] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:40:20,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676180607] [2023-08-27 01:40:20,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:40:20,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:40:20,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:40:20,445 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:40:20,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-08-27 01:40:20,716 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:40:20,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:40:20,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-27 01:40:20,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:40:21,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:40:21,217 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 27 treesize of output 25 [2023-08-27 01:40:21,316 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:40:21,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 27 [2023-08-27 01:40:21,598 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 01:40:21,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:40:31,102 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:40:31,103 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 88 [2023-08-27 01:40:31,109 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 18 [2023-08-27 01:40:35,894 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 01:40:35,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676180607] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:40:35,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:40:35,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 39 [2023-08-27 01:40:35,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078943812] [2023-08-27 01:40:35,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:40:35,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-27 01:40:35,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:40:35,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-27 01:40:35,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1462, Unknown=12, NotChecked=0, Total=1640 [2023-08-27 01:40:35,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 333 [2023-08-27 01:40:35,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 787 places, 4239 transitions, 95896 flow. Second operand has 41 states, 41 states have (on average 90.90243902439025) internal successors, (3727), 41 states have internal predecessors, (3727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:40:35,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:40:35,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 333 [2023-08-27 01:40:35,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:41:00,435 WARN L234 SmtUtils]: Spent 15.86s on a formula simplification. DAG size of input: 119 DAG size of output: 70 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-08-27 01:41:05,134 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 01:41:05,135 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 01:41:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-27 01:41:05,150 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (17 of 18 remaining) [2023-08-27 01:41:05,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-08-27 01:41:05,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:41:05,352 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 89/333 universal loopers) in iteration 82,while PetriNetUnfolder was constructing finite prefix that currently has 31813 conditions, 2523 events (1654/2522 cut-off events. For 108371/108371 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 16133 event pairs, 165 based on Foata normal form. 0/3356 useless extension candidates. Maximal degree in co-relation 31513. Up to 1314 conditions per place.). [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-27 01:41:05,354 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-27 01:41:05,355 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-27 01:41:05,355 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-27 01:41:05,355 INFO L445 BasicCegarLoop]: Path program histogram: [22, 19, 17, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:41:05,357 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 01:41:05,357 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 01:41:05,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 01:41:05 BasicIcfg [2023-08-27 01:41:05,359 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 01:41:05,359 INFO L158 Benchmark]: Toolchain (without parser) took 810780.30ms. Allocated memory was 373.3MB in the beginning and 9.7GB in the end (delta: 9.3GB). Free memory was 348.9MB in the beginning and 5.4GB in the end (delta: -5.1GB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. [2023-08-27 01:41:05,359 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 373.3MB. Free memory is still 350.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 01:41:05,359 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.83ms. Allocated memory is still 373.3MB. Free memory was 348.9MB in the beginning and 337.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 01:41:05,359 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.70ms. Allocated memory is still 373.3MB. Free memory was 337.5MB in the beginning and 336.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 01:41:05,359 INFO L158 Benchmark]: Boogie Preprocessor took 29.65ms. Allocated memory is still 373.3MB. Free memory was 335.9MB in the beginning and 334.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 01:41:05,360 INFO L158 Benchmark]: RCFGBuilder took 309.01ms. Allocated memory is still 373.3MB. Free memory was 333.9MB in the beginning and 317.0MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 01:41:05,360 INFO L158 Benchmark]: TraceAbstraction took 810174.78ms. Allocated memory was 373.3MB in the beginning and 9.7GB in the end (delta: 9.3GB). Free memory was 316.5MB in the beginning and 5.4GB in the end (delta: -5.1GB). Peak memory consumption was 4.2GB. Max. memory is 16.0GB. [2023-08-27 01:41:05,360 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 373.3MB. Free memory is still 350.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 220.83ms. Allocated memory is still 373.3MB. Free memory was 348.9MB in the beginning and 337.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.70ms. Allocated memory is still 373.3MB. Free memory was 337.5MB in the beginning and 336.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 29.65ms. Allocated memory is still 373.3MB. Free memory was 335.9MB in the beginning and 334.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 309.01ms. Allocated memory is still 373.3MB. Free memory was 333.9MB in the beginning and 317.0MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 810174.78ms. Allocated memory was 373.3MB in the beginning and 9.7GB in the end (delta: 9.3GB). Free memory was 316.5MB in the beginning and 5.4GB in the end (delta: -5.1GB). Peak memory consumption was 4.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 156 PlacesBefore, 38 PlacesAfterwards, 158 TransitionsBefore, 32 TransitionsAfterwards, 2958 CoEnabledTransitionPairs, 7 FixpointIterations, 79 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 161 TotalNumberOfCompositions, 3383 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3131, independent: 3106, independent conditional: 0, independent unconditional: 3106, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1648, independent: 1634, independent conditional: 0, independent unconditional: 1634, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3131, independent: 1472, independent conditional: 0, independent unconditional: 1472, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 1648, unknown conditional: 0, unknown unconditional: 1648] , Statistics on independence cache: Total cache size (in pairs): 83, Positive cache size: 80, Positive conditional cache size: 0, Positive unconditional cache size: 80, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 89/333 universal loopers) in iteration 82,while PetriNetUnfolder was constructing finite prefix that currently has 31813 conditions, 2523 events (1654/2522 cut-off events. For 108371/108371 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 16133 event pairs, 165 based on Foata normal form. 0/3356 useless extension candidates. Maximal degree in co-relation 31513. Up to 1314 conditions per place.). - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 89/333 universal loopers) in iteration 82,while PetriNetUnfolder was constructing finite prefix that currently has 31813 conditions, 2523 events (1654/2522 cut-off events. For 108371/108371 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 16133 event pairs, 165 based on Foata normal form. 0/3356 useless extension candidates. Maximal degree in co-relation 31513. Up to 1314 conditions per place.). - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 89/333 universal loopers) in iteration 82,while PetriNetUnfolder was constructing finite prefix that currently has 31813 conditions, 2523 events (1654/2522 cut-off events. For 108371/108371 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 16133 event pairs, 165 based on Foata normal form. 0/3356 useless extension candidates. Maximal degree in co-relation 31513. Up to 1314 conditions per place.). - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 89/333 universal loopers) in iteration 82,while PetriNetUnfolder was constructing finite prefix that currently has 31813 conditions, 2523 events (1654/2522 cut-off events. For 108371/108371 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 16133 event pairs, 165 based on Foata normal form. 0/3356 useless extension candidates. Maximal degree in co-relation 31513. Up to 1314 conditions per place.). - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 89/333 universal loopers) in iteration 82,while PetriNetUnfolder was constructing finite prefix that currently has 31813 conditions, 2523 events (1654/2522 cut-off events. For 108371/108371 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 16133 event pairs, 165 based on Foata normal form. 0/3356 useless extension candidates. Maximal degree in co-relation 31513. Up to 1314 conditions per place.). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 89/333 universal loopers) in iteration 82,while PetriNetUnfolder was constructing finite prefix that currently has 31813 conditions, 2523 events (1654/2522 cut-off events. For 108371/108371 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 16133 event pairs, 165 based on Foata normal form. 0/3356 useless extension candidates. Maximal degree in co-relation 31513. Up to 1314 conditions per place.). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 89/333 universal loopers) in iteration 82,while PetriNetUnfolder was constructing finite prefix that currently has 31813 conditions, 2523 events (1654/2522 cut-off events. For 108371/108371 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 16133 event pairs, 165 based on Foata normal form. 0/3356 useless extension candidates. Maximal degree in co-relation 31513. Up to 1314 conditions per place.). - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 89/333 universal loopers) in iteration 82,while PetriNetUnfolder was constructing finite prefix that currently has 31813 conditions, 2523 events (1654/2522 cut-off events. For 108371/108371 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 16133 event pairs, 165 based on Foata normal form. 0/3356 useless extension candidates. Maximal degree in co-relation 31513. Up to 1314 conditions per place.). - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 89/333 universal loopers) in iteration 82,while PetriNetUnfolder was constructing finite prefix that currently has 31813 conditions, 2523 events (1654/2522 cut-off events. For 108371/108371 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 16133 event pairs, 165 based on Foata normal form. 0/3356 useless extension candidates. Maximal degree in co-relation 31513. Up to 1314 conditions per place.). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 89/333 universal loopers) in iteration 82,while PetriNetUnfolder was constructing finite prefix that currently has 31813 conditions, 2523 events (1654/2522 cut-off events. For 108371/108371 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 16133 event pairs, 165 based on Foata normal form. 0/3356 useless extension candidates. Maximal degree in co-relation 31513. Up to 1314 conditions per place.). - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 89/333 universal loopers) in iteration 82,while PetriNetUnfolder was constructing finite prefix that currently has 31813 conditions, 2523 events (1654/2522 cut-off events. For 108371/108371 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 16133 event pairs, 165 based on Foata normal form. 0/3356 useless extension candidates. Maximal degree in co-relation 31513. Up to 1314 conditions per place.). - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 89/333 universal loopers) in iteration 82,while PetriNetUnfolder was constructing finite prefix that currently has 31813 conditions, 2523 events (1654/2522 cut-off events. For 108371/108371 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 16133 event pairs, 165 based on Foata normal form. 0/3356 useless extension candidates. Maximal degree in co-relation 31513. Up to 1314 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 212 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 810.1s, OverallIterations: 82, TraceHistogramMax: 4, PathProgramHistogramMax: 22, EmptinessCheckTime: 0.0s, AutomataDifference: 550.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 116 mSolverCounterUnknown, 9825 SdHoareTripleChecker+Valid, 60.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9825 mSDsluCounter, 3542 SdHoareTripleChecker+Invalid, 55.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4462 IncrementalHoareTripleChecker+Unchecked, 3184 mSDsCounter, 674 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58659 IncrementalHoareTripleChecker+Invalid, 63911 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 674 mSolverCounterUnsat, 358 mSDtfsCounter, 58659 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4369 GetRequests, 2152 SyntacticMatches, 130 SemanticMatches, 2087 ConstructedPredicates, 24 IntricatePredicates, 0 DeprecatedPredicates, 21457 ImplicationChecksByTransitivity, 227.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95896occurred in iteration=81, InterpolantAutomatonStates: 1110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 4.9s SatisfiabilityAnalysisTime, 227.1s InterpolantComputationTime, 3353 NumberOfCodeBlocks, 3341 NumberOfCodeBlocksAsserted, 215 NumberOfCheckSat, 4716 ConstructedInterpolants, 201 QuantifiedInterpolants, 76918 SizeOfPredicates, 569 NumberOfNonLiveVariables, 16672 ConjunctsInSsa, 1785 ConjunctsInUnsatCore, 224 InterpolantComputations, 19 PerfectInterpolantSequences, 339/1078 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown