./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:41:36,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:41:36,134 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:41:36,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:41:36,140 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:41:36,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:41:36,165 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:41:36,165 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:41:36,166 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:41:36,166 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:41:36,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:41:36,167 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:41:36,167 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:41:36,167 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:41:36,167 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:41:36,168 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:41:36,168 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:41:36,168 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:41:36,168 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:41:36,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:41:36,168 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:41:36,168 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:41:36,168 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:41:36,168 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:41:36,168 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:41:36,169 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:41:36,169 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:41:36,169 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:41:36,169 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:41:36,169 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:41:36,169 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:41:36,169 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:41:36,170 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:41:36,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:41:36,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:41:36,170 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:41:36,170 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:41:36,170 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:41:36,170 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:41:36,170 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:41:36,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:41:36,170 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:41:36,170 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:41:36,170 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:41:36,171 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:41:36,171 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c [2025-03-09 06:41:36,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:41:36,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:41:36,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:41:36,423 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:41:36,423 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:41:36,424 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2025-03-09 06:41:37,572 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b5660f8/2ade8eb3c88242a192053cbf0d3df63d/FLAG9dbb945e1 [2025-03-09 06:41:37,821 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:41:37,821 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2025-03-09 06:41:37,830 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b5660f8/2ade8eb3c88242a192053cbf0d3df63d/FLAG9dbb945e1 [2025-03-09 06:41:38,163 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b5660f8/2ade8eb3c88242a192053cbf0d3df63d [2025-03-09 06:41:38,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:41:38,167 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:41:38,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:41:38,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:41:38,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:41:38,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:41:38" (1/1) ... [2025-03-09 06:41:38,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f71dd46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38, skipping insertion in model container [2025-03-09 06:41:38,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:41:38" (1/1) ... [2025-03-09 06:41:38,190 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:41:38,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:41:38,333 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:41:38,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:41:38,364 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:41:38,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38 WrapperNode [2025-03-09 06:41:38,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:41:38,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:41:38,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:41:38,368 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:41:38,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38" (1/1) ... [2025-03-09 06:41:38,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38" (1/1) ... [2025-03-09 06:41:38,390 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 71 [2025-03-09 06:41:38,390 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:41:38,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:41:38,391 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:41:38,391 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:41:38,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38" (1/1) ... [2025-03-09 06:41:38,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38" (1/1) ... [2025-03-09 06:41:38,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38" (1/1) ... [2025-03-09 06:41:38,406 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-09 06:41:38,406 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38" (1/1) ... [2025-03-09 06:41:38,406 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38" (1/1) ... [2025-03-09 06:41:38,408 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38" (1/1) ... [2025-03-09 06:41:38,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38" (1/1) ... [2025-03-09 06:41:38,409 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38" (1/1) ... [2025-03-09 06:41:38,410 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38" (1/1) ... [2025-03-09 06:41:38,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:41:38,411 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:41:38,411 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:41:38,411 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:41:38,412 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38" (1/1) ... [2025-03-09 06:41:38,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:41:38,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:38,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:41:38,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:41:38,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:41:38,454 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:41:38,454 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:41:38,454 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:41:38,454 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:41:38,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:41:38,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:41:38,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:41:38,455 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:41:38,516 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:41:38,518 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:41:38,669 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:41:38,669 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:41:38,751 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:41:38,753 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:41:38,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:41:38 BoogieIcfgContainer [2025-03-09 06:41:38,753 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:41:38,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:41:38,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:41:38,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:41:38,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:41:38" (1/3) ... [2025-03-09 06:41:38,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546fc492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:41:38, skipping insertion in model container [2025-03-09 06:41:38,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:38" (2/3) ... [2025-03-09 06:41:38,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546fc492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:41:38, skipping insertion in model container [2025-03-09 06:41:38,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:41:38" (3/3) ... [2025-03-09 06:41:38,760 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2025-03-09 06:41:38,772 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:41:38,773 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-figure1-alt.wvr.c that has 3 procedures, 34 locations, 1 initial locations, 2 loop locations, and 10 error locations. [2025-03-09 06:41:38,773 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:41:38,811 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 06:41:38,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 35 transitions, 84 flow [2025-03-09 06:41:38,865 INFO L124 PetriNetUnfolderBase]: 2/33 cut-off events. [2025-03-09 06:41:38,868 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:41:38,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 2/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 69 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-03-09 06:41:38,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 35 transitions, 84 flow [2025-03-09 06:41:38,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 76 flow [2025-03-09 06:41:38,878 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:41:38,885 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@522a12c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:41:38,885 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-03-09 06:41:38,888 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:41:38,888 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-09 06:41:38,889 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 06:41:38,889 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:38,891 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:41:38,891 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:38,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash 238799717, now seen corresponding path program 1 times [2025-03-09 06:41:38,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:38,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505724939] [2025-03-09 06:41:38,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:38,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:38,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:41:38,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:41:38,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:38,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:39,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:39,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505724939] [2025-03-09 06:41:39,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505724939] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:39,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:39,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:41:39,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621719188] [2025-03-09 06:41:39,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:39,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:41:39,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:39,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:41:39,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:41:39,099 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-03-09 06:41:39,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:39,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:39,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-03-09 06:41:39,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:39,266 INFO L124 PetriNetUnfolderBase]: 194/416 cut-off events. [2025-03-09 06:41:39,266 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2025-03-09 06:41:39,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 416 events. 194/416 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1905 event pairs, 77 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 718. Up to 290 conditions per place. [2025-03-09 06:41:39,274 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 29 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2025-03-09 06:41:39,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 165 flow [2025-03-09 06:41:39,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:41:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:41:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-03-09 06:41:39,286 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-09 06:41:39,287 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 76 flow. Second operand 3 states and 70 transitions. [2025-03-09 06:41:39,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 165 flow [2025-03-09 06:41:39,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 151 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:41:39,291 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 84 flow [2025-03-09 06:41:39,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2025-03-09 06:41:39,295 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2025-03-09 06:41:39,295 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 84 flow [2025-03-09 06:41:39,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:39,295 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:39,295 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:39,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:41:39,296 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:39,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:39,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1853270985, now seen corresponding path program 1 times [2025-03-09 06:41:39,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:39,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162674428] [2025-03-09 06:41:39,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:39,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:39,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:41:39,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:41:39,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:39,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:39,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:39,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162674428] [2025-03-09 06:41:39,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162674428] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:39,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:39,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:39,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966094102] [2025-03-09 06:41:39,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:39,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:39,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:39,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:39,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:39,391 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-03-09 06:41:39,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:39,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:39,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-03-09 06:41:39,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:39,533 INFO L124 PetriNetUnfolderBase]: 298/579 cut-off events. [2025-03-09 06:41:39,533 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2025-03-09 06:41:39,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 579 events. 298/579 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2749 event pairs, 127 based on Foata normal form. 18/496 useless extension candidates. Maximal degree in co-relation 552. Up to 422 conditions per place. [2025-03-09 06:41:39,537 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2025-03-09 06:41:39,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 58 transitions, 240 flow [2025-03-09 06:41:39,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2025-03-09 06:41:39,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2025-03-09 06:41:39,539 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 84 flow. Second operand 4 states and 92 transitions. [2025-03-09 06:41:39,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 58 transitions, 240 flow [2025-03-09 06:41:39,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:41:39,541 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 111 flow [2025-03-09 06:41:39,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2025-03-09 06:41:39,542 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2025-03-09 06:41:39,542 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 111 flow [2025-03-09 06:41:39,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:39,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:39,543 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:39,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:41:39,543 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:39,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:39,544 INFO L85 PathProgramCache]: Analyzing trace with hash 477415908, now seen corresponding path program 1 times [2025-03-09 06:41:39,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:39,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24130782] [2025-03-09 06:41:39,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:39,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:39,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:41:39,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:41:39,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:39,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:39,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:39,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24130782] [2025-03-09 06:41:39,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24130782] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:39,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:39,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:41:39,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132587761] [2025-03-09 06:41:39,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:39,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:41:39,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:39,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:41:39,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:41:39,630 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-03-09 06:41:39,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:39,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:39,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-03-09 06:41:39,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:39,701 INFO L124 PetriNetUnfolderBase]: 221/499 cut-off events. [2025-03-09 06:41:39,702 INFO L125 PetriNetUnfolderBase]: For 156/160 co-relation queries the response was YES. [2025-03-09 06:41:39,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 499 events. 221/499 cut-off events. For 156/160 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2476 event pairs, 133 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 357. Up to 286 conditions per place. [2025-03-09 06:41:39,705 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 38 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2025-03-09 06:41:39,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 244 flow [2025-03-09 06:41:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:41:39,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:41:39,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-03-09 06:41:39,706 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6952380952380952 [2025-03-09 06:41:39,706 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 111 flow. Second operand 3 states and 73 transitions. [2025-03-09 06:41:39,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 244 flow [2025-03-09 06:41:39,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:41:39,708 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 132 flow [2025-03-09 06:41:39,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2025-03-09 06:41:39,709 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2025-03-09 06:41:39,710 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 132 flow [2025-03-09 06:41:39,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:39,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:39,710 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:39,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:41:39,711 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:39,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:39,711 INFO L85 PathProgramCache]: Analyzing trace with hash -516292791, now seen corresponding path program 1 times [2025-03-09 06:41:39,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:39,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952005910] [2025-03-09 06:41:39,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:39,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:39,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:41:39,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:41:39,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:39,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:39,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:39,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952005910] [2025-03-09 06:41:39,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952005910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:39,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:39,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:41:39,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224130124] [2025-03-09 06:41:39,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:39,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:39,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:39,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:39,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:39,802 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-03-09 06:41:39,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:39,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:39,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-03-09 06:41:39,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:39,907 INFO L124 PetriNetUnfolderBase]: 272/593 cut-off events. [2025-03-09 06:41:39,907 INFO L125 PetriNetUnfolderBase]: For 475/477 co-relation queries the response was YES. [2025-03-09 06:41:39,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 593 events. 272/593 cut-off events. For 475/477 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2749 event pairs, 56 based on Foata normal form. 25/602 useless extension candidates. Maximal degree in co-relation 681. Up to 237 conditions per place. [2025-03-09 06:41:39,910 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 44 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2025-03-09 06:41:39,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 294 flow [2025-03-09 06:41:39,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:39,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2025-03-09 06:41:39,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2025-03-09 06:41:39,911 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 132 flow. Second operand 4 states and 96 transitions. [2025-03-09 06:41:39,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 294 flow [2025-03-09 06:41:39,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:41:39,913 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 160 flow [2025-03-09 06:41:39,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2025-03-09 06:41:39,913 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2025-03-09 06:41:39,914 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 160 flow [2025-03-09 06:41:39,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:39,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:39,914 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:39,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:41:39,914 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:39,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:39,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1008462737, now seen corresponding path program 1 times [2025-03-09 06:41:39,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:39,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049453089] [2025-03-09 06:41:39,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:39,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:39,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:41:39,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:41:39,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:39,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:39,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:39,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:39,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049453089] [2025-03-09 06:41:39,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049453089] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:39,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128832932] [2025-03-09 06:41:39,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:39,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:39,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:39,979 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) [2025-03-09 06:41:40,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:41:40,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:41:40,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:41:40,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:40,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:40,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:41:40,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:40,106 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:41:40,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128832932] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:40,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:41:40,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2025-03-09 06:41:40,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776365408] [2025-03-09 06:41:40,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:40,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:40,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:40,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:40,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:41:40,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-03-09 06:41:40,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:40,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:40,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-03-09 06:41:40,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:40,185 INFO L124 PetriNetUnfolderBase]: 328/721 cut-off events. [2025-03-09 06:41:40,186 INFO L125 PetriNetUnfolderBase]: For 850/864 co-relation queries the response was YES. [2025-03-09 06:41:40,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1806 conditions, 721 events. 328/721 cut-off events. For 850/864 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3599 event pairs, 89 based on Foata normal form. 36/731 useless extension candidates. Maximal degree in co-relation 679. Up to 347 conditions per place. [2025-03-09 06:41:40,189 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 38 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2025-03-09 06:41:40,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 303 flow [2025-03-09 06:41:40,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:40,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-03-09 06:41:40,191 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2025-03-09 06:41:40,191 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 160 flow. Second operand 4 states and 85 transitions. [2025-03-09 06:41:40,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 303 flow [2025-03-09 06:41:40,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 295 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:41:40,195 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 191 flow [2025-03-09 06:41:40,195 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2025-03-09 06:41:40,196 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2025-03-09 06:41:40,196 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 191 flow [2025-03-09 06:41:40,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:40,196 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:40,196 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:40,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:41:40,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:40,402 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:40,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:40,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2139649132, now seen corresponding path program 1 times [2025-03-09 06:41:40,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:40,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364623711] [2025-03-09 06:41:40,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:40,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:40,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:41:40,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:41:40,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:40,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:40,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:40,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364623711] [2025-03-09 06:41:40,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364623711] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:40,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:40,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:41:40,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784387032] [2025-03-09 06:41:40,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:40,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:41:40,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:40,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:41:40,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:41:40,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-03-09 06:41:40,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:40,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:40,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-03-09 06:41:40,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:40,531 INFO L124 PetriNetUnfolderBase]: 328/727 cut-off events. [2025-03-09 06:41:40,531 INFO L125 PetriNetUnfolderBase]: For 880/882 co-relation queries the response was YES. [2025-03-09 06:41:40,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 727 events. 328/727 cut-off events. For 880/882 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3681 event pairs, 259 based on Foata normal form. 5/716 useless extension candidates. Maximal degree in co-relation 767. Up to 577 conditions per place. [2025-03-09 06:41:40,536 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 31 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2025-03-09 06:41:40,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 253 flow [2025-03-09 06:41:40,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:41:40,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:41:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2025-03-09 06:41:40,538 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2025-03-09 06:41:40,538 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 191 flow. Second operand 3 states and 52 transitions. [2025-03-09 06:41:40,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 253 flow [2025-03-09 06:41:40,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:41:40,541 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 184 flow [2025-03-09 06:41:40,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=184, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2025-03-09 06:41:40,542 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2025-03-09 06:41:40,543 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 184 flow [2025-03-09 06:41:40,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:40,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:40,543 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:40,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:41:40,544 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:40,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2058843212, now seen corresponding path program 1 times [2025-03-09 06:41:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:40,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242969571] [2025-03-09 06:41:40,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:40,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:40,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:41:40,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:41:40,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:40,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:40,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:40,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242969571] [2025-03-09 06:41:40,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242969571] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:40,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:40,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:40,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068157137] [2025-03-09 06:41:40,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:40,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:40,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:40,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:40,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:40,589 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-03-09 06:41:40,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:40,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:40,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-03-09 06:41:40,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:40,722 INFO L124 PetriNetUnfolderBase]: 580/1157 cut-off events. [2025-03-09 06:41:40,723 INFO L125 PetriNetUnfolderBase]: For 1309/1341 co-relation queries the response was YES. [2025-03-09 06:41:40,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3155 conditions, 1157 events. 580/1157 cut-off events. For 1309/1341 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6053 event pairs, 305 based on Foata normal form. 31/1156 useless extension candidates. Maximal degree in co-relation 3141. Up to 708 conditions per place. [2025-03-09 06:41:40,728 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 65 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2025-03-09 06:41:40,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 76 transitions, 526 flow [2025-03-09 06:41:40,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:40,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:40,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-03-09 06:41:40,732 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2025-03-09 06:41:40,732 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 184 flow. Second operand 4 states and 85 transitions. [2025-03-09 06:41:40,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 76 transitions, 526 flow [2025-03-09 06:41:40,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 76 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:41:40,734 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 212 flow [2025-03-09 06:41:40,734 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2025-03-09 06:41:40,735 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2025-03-09 06:41:40,735 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 212 flow [2025-03-09 06:41:40,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:40,735 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:40,735 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:40,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:41:40,735 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:40,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:40,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1529928275, now seen corresponding path program 1 times [2025-03-09 06:41:40,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:40,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762992535] [2025-03-09 06:41:40,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:40,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:40,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:41:40,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:41:40,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:40,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:40,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:40,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:40,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762992535] [2025-03-09 06:41:40,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762992535] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:40,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582771571] [2025-03-09 06:41:40,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:40,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:40,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:40,800 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) [2025-03-09 06:41:40,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:41:40,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:41:40,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:41:40,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:40,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:40,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:41:40,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:40,860 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:41:40,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582771571] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:40,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:41:40,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:41:40,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612704617] [2025-03-09 06:41:40,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:40,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:41:40,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:40,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:41:40,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:41:40,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-03-09 06:41:40,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:40,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:40,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-03-09 06:41:40,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:41,028 INFO L124 PetriNetUnfolderBase]: 548/1086 cut-off events. [2025-03-09 06:41:41,028 INFO L125 PetriNetUnfolderBase]: For 1547/1590 co-relation queries the response was YES. [2025-03-09 06:41:41,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3295 conditions, 1086 events. 548/1086 cut-off events. For 1547/1590 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5587 event pairs, 78 based on Foata normal form. 38/1086 useless extension candidates. Maximal degree in co-relation 3279. Up to 371 conditions per place. [2025-03-09 06:41:41,035 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 82 selfloop transitions, 7 changer transitions 0/96 dead transitions. [2025-03-09 06:41:41,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 96 transitions, 642 flow [2025-03-09 06:41:41,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:41:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:41:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2025-03-09 06:41:41,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2025-03-09 06:41:41,036 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 212 flow. Second operand 6 states and 124 transitions. [2025-03-09 06:41:41,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 96 transitions, 642 flow [2025-03-09 06:41:41,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 627 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:41:41,039 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 219 flow [2025-03-09 06:41:41,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2025-03-09 06:41:41,039 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2025-03-09 06:41:41,039 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 219 flow [2025-03-09 06:41:41,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:41,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:41,040 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:41,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 06:41:41,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-09 06:41:41,241 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:41,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:41,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1852901725, now seen corresponding path program 1 times [2025-03-09 06:41:41,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:41,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590450699] [2025-03-09 06:41:41,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:41,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:41,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:41:41,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:41:41,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:41,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:41,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:41,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590450699] [2025-03-09 06:41:41,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590450699] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:41,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:41,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:41:41,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594114786] [2025-03-09 06:41:41,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:41,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:41:41,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:41,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:41:41,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:41:41,286 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-03-09 06:41:41,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:41,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:41,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-03-09 06:41:41,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:41,371 INFO L124 PetriNetUnfolderBase]: 490/1051 cut-off events. [2025-03-09 06:41:41,371 INFO L125 PetriNetUnfolderBase]: For 1750/1750 co-relation queries the response was YES. [2025-03-09 06:41:41,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3279 conditions, 1051 events. 490/1051 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5588 event pairs, 381 based on Foata normal form. 5/1053 useless extension candidates. Maximal degree in co-relation 3263. Up to 838 conditions per place. [2025-03-09 06:41:41,377 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 31 selfloop transitions, 1 changer transitions 3/41 dead transitions. [2025-03-09 06:41:41,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 41 transitions, 285 flow [2025-03-09 06:41:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:41:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:41:41,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2025-03-09 06:41:41,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2025-03-09 06:41:41,378 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 219 flow. Second operand 3 states and 51 transitions. [2025-03-09 06:41:41,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 41 transitions, 285 flow [2025-03-09 06:41:41,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 270 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-03-09 06:41:41,380 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 196 flow [2025-03-09 06:41:41,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2025-03-09 06:41:41,381 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2025-03-09 06:41:41,381 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 196 flow [2025-03-09 06:41:41,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:41,381 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:41,381 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-09 06:41:41,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:41:41,381 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:41,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:41,382 INFO L85 PathProgramCache]: Analyzing trace with hash 183136482, now seen corresponding path program 1 times [2025-03-09 06:41:41,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:41,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575320248] [2025-03-09 06:41:41,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:41,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:41,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:41:41,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:41:41,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:41,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:41,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:41,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575320248] [2025-03-09 06:41:41,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575320248] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:41,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669515004] [2025-03-09 06:41:41,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:41,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:41,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:41,426 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) [2025-03-09 06:41:41,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:41:41,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:41:41,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:41:41,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:41,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:41,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:41:41,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:41,494 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:41,494 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:41,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669515004] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:41,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:41,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:41:41,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704315985] [2025-03-09 06:41:41,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:41,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:41:41,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:41,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:41:41,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:41:41,563 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-03-09 06:41:41,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 196 flow. Second operand has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:41,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:41,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-03-09 06:41:41,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:41,886 INFO L124 PetriNetUnfolderBase]: 1193/2310 cut-off events. [2025-03-09 06:41:41,886 INFO L125 PetriNetUnfolderBase]: For 3927/4025 co-relation queries the response was YES. [2025-03-09 06:41:41,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6885 conditions, 2310 events. 1193/2310 cut-off events. For 3927/4025 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12670 event pairs, 191 based on Foata normal form. 114/2422 useless extension candidates. Maximal degree in co-relation 6869. Up to 820 conditions per place. [2025-03-09 06:41:41,897 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 152 selfloop transitions, 12 changer transitions 0/169 dead transitions. [2025-03-09 06:41:41,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 169 transitions, 1159 flow [2025-03-09 06:41:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:41:41,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:41:41,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 218 transitions. [2025-03-09 06:41:41,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6228571428571429 [2025-03-09 06:41:41,899 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 196 flow. Second operand 10 states and 218 transitions. [2025-03-09 06:41:41,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 169 transitions, 1159 flow [2025-03-09 06:41:41,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 169 transitions, 1158 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:41:41,903 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 276 flow [2025-03-09 06:41:41,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=276, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2025-03-09 06:41:41,905 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2025-03-09 06:41:41,905 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 276 flow [2025-03-09 06:41:41,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.666666666666666) internal successors, (140), 12 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:41,906 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:41,906 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:41,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 06:41:42,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:42,107 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:42,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:42,107 INFO L85 PathProgramCache]: Analyzing trace with hash 256911991, now seen corresponding path program 1 times [2025-03-09 06:41:42,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:42,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111146377] [2025-03-09 06:41:42,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:42,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:42,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:41:42,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:41:42,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:42,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:42,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:42,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111146377] [2025-03-09 06:41:42,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111146377] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419085384] [2025-03-09 06:41:42,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:42,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:42,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:42,167 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) [2025-03-09 06:41:42,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:41:42,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:41:42,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:41:42,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:42,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:42,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:41:42,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:42,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:42,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419085384] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:42,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:42,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-03-09 06:41:42,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134860770] [2025-03-09 06:41:42,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:42,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 06:41:42,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:42,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 06:41:42,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:41:42,258 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-03-09 06:41:42,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 276 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:42,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:42,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-03-09 06:41:42,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:42,473 INFO L124 PetriNetUnfolderBase]: 1333/2678 cut-off events. [2025-03-09 06:41:42,473 INFO L125 PetriNetUnfolderBase]: For 6270/6368 co-relation queries the response was YES. [2025-03-09 06:41:42,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8771 conditions, 2678 events. 1333/2678 cut-off events. For 6270/6368 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 15092 event pairs, 169 based on Foata normal form. 185/2862 useless extension candidates. Maximal degree in co-relation 8752. Up to 1059 conditions per place. [2025-03-09 06:41:42,487 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 86 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2025-03-09 06:41:42,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 748 flow [2025-03-09 06:41:42,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:41:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:41:42,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2025-03-09 06:41:42,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2025-03-09 06:41:42,488 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 276 flow. Second operand 6 states and 129 transitions. [2025-03-09 06:41:42,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 748 flow [2025-03-09 06:41:42,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 728 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-03-09 06:41:42,497 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 334 flow [2025-03-09 06:41:42,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2025-03-09 06:41:42,498 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2025-03-09 06:41:42,498 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 334 flow [2025-03-09 06:41:42,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:42,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:42,498 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:42,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 06:41:42,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:42,702 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:42,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:42,703 INFO L85 PathProgramCache]: Analyzing trace with hash 864831116, now seen corresponding path program 1 times [2025-03-09 06:41:42,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:42,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36750879] [2025-03-09 06:41:42,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:42,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:42,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:41:42,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:41:42,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:42,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:42,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:42,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36750879] [2025-03-09 06:41:42,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36750879] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:42,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:42,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:41:42,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374173009] [2025-03-09 06:41:42,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:42,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:41:42,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:42,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:41:42,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:41:42,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-03-09 06:41:42,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 334 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:42,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:42,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-03-09 06:41:42,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:42,978 INFO L124 PetriNetUnfolderBase]: 1535/3181 cut-off events. [2025-03-09 06:41:42,978 INFO L125 PetriNetUnfolderBase]: For 7959/8051 co-relation queries the response was YES. [2025-03-09 06:41:42,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10697 conditions, 3181 events. 1535/3181 cut-off events. For 7959/8051 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 18796 event pairs, 309 based on Foata normal form. 34/3214 useless extension candidates. Maximal degree in co-relation 10674. Up to 1781 conditions per place. [2025-03-09 06:41:43,000 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 87 selfloop transitions, 8 changer transitions 2/103 dead transitions. [2025-03-09 06:41:43,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 817 flow [2025-03-09 06:41:43,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:41:43,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:41:43,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-03-09 06:41:43,002 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6171428571428571 [2025-03-09 06:41:43,002 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 334 flow. Second operand 5 states and 108 transitions. [2025-03-09 06:41:43,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 817 flow [2025-03-09 06:41:43,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 103 transitions, 810 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-09 06:41:43,012 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 400 flow [2025-03-09 06:41:43,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2025-03-09 06:41:43,013 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 28 predicate places. [2025-03-09 06:41:43,013 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 400 flow [2025-03-09 06:41:43,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:43,014 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:43,014 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1] [2025-03-09 06:41:43,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:41:43,014 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:43,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:43,014 INFO L85 PathProgramCache]: Analyzing trace with hash -979245520, now seen corresponding path program 1 times [2025-03-09 06:41:43,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:43,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249505370] [2025-03-09 06:41:43,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:43,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:43,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:41:43,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:41:43,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:43,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:43,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:43,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249505370] [2025-03-09 06:41:43,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249505370] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:43,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18807700] [2025-03-09 06:41:43,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:43,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:43,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:43,081 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) [2025-03-09 06:41:43,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:41:43,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 06:41:43,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 06:41:43,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:43,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:43,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 06:41:43,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:43,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:43,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18807700] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:43,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:43,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-09 06:41:43,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989523752] [2025-03-09 06:41:43,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:43,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:41:43,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:43,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:41:43,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:41:43,196 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-03-09 06:41:43,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 400 flow. Second operand has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:43,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:43,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-03-09 06:41:43,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:43,791 INFO L124 PetriNetUnfolderBase]: 3070/6425 cut-off events. [2025-03-09 06:41:43,791 INFO L125 PetriNetUnfolderBase]: For 20332/20638 co-relation queries the response was YES. [2025-03-09 06:41:43,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21894 conditions, 6425 events. 3070/6425 cut-off events. For 20332/20638 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 44869 event pairs, 213 based on Foata normal form. 272/6696 useless extension candidates. Maximal degree in co-relation 21869. Up to 1285 conditions per place. [2025-03-09 06:41:43,829 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 186 selfloop transitions, 34 changer transitions 0/226 dead transitions. [2025-03-09 06:41:43,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 226 transitions, 1819 flow [2025-03-09 06:41:43,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 06:41:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 06:41:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2025-03-09 06:41:43,831 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7064935064935065 [2025-03-09 06:41:43,831 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 400 flow. Second operand 11 states and 272 transitions. [2025-03-09 06:41:43,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 226 transitions, 1819 flow [2025-03-09 06:41:43,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 226 transitions, 1810 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-09 06:41:43,855 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 810 flow [2025-03-09 06:41:43,855 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=810, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2025-03-09 06:41:43,856 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 44 predicate places. [2025-03-09 06:41:43,856 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 810 flow [2025-03-09 06:41:43,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:43,857 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:43,857 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:43,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 06:41:44,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-09 06:41:44,058 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:44,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:44,059 INFO L85 PathProgramCache]: Analyzing trace with hash -167226266, now seen corresponding path program 1 times [2025-03-09 06:41:44,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:44,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33302837] [2025-03-09 06:41:44,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:44,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:44,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 06:41:44,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 06:41:44,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:44,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:41:44,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:44,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33302837] [2025-03-09 06:41:44,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33302837] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:44,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312066713] [2025-03-09 06:41:44,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:44,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:44,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:44,126 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) [2025-03-09 06:41:44,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:41:44,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 06:41:44,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 06:41:44,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:44,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:44,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:41:44,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:41:44,197 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:41:44,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312066713] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:44,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:41:44,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:41:44,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742535024] [2025-03-09 06:41:44,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:44,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:41:44,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:44,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:41:44,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:41:44,204 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-03-09 06:41:44,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:44,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:44,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-03-09 06:41:44,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:44,761 INFO L124 PetriNetUnfolderBase]: 3520/6968 cut-off events. [2025-03-09 06:41:44,761 INFO L125 PetriNetUnfolderBase]: For 26631/26733 co-relation queries the response was YES. [2025-03-09 06:41:44,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25552 conditions, 6968 events. 3520/6968 cut-off events. For 26631/26733 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 47552 event pairs, 590 based on Foata normal form. 295/6967 useless extension candidates. Maximal degree in co-relation 25519. Up to 2159 conditions per place. [2025-03-09 06:41:44,838 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 218 selfloop transitions, 7 changer transitions 0/229 dead transitions. [2025-03-09 06:41:44,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 229 transitions, 3050 flow [2025-03-09 06:41:44,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:41:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:41:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2025-03-09 06:41:44,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2025-03-09 06:41:44,840 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 810 flow. Second operand 6 states and 114 transitions. [2025-03-09 06:41:44,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 229 transitions, 3050 flow [2025-03-09 06:41:44,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 229 transitions, 2785 flow, removed 131 selfloop flow, removed 1 redundant places. [2025-03-09 06:41:44,877 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 748 flow [2025-03-09 06:41:44,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=748, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2025-03-09 06:41:44,877 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 47 predicate places. [2025-03-09 06:41:44,877 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 748 flow [2025-03-09 06:41:44,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:44,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:44,878 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:44,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 06:41:45,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:45,078 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:45,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:45,079 INFO L85 PathProgramCache]: Analyzing trace with hash -48769074, now seen corresponding path program 1 times [2025-03-09 06:41:45,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:45,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820622851] [2025-03-09 06:41:45,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:45,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:45,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 06:41:45,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 06:41:45,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:45,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:45,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:45,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820622851] [2025-03-09 06:41:45,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820622851] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:45,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943086453] [2025-03-09 06:41:45,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:45,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:45,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:45,129 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) [2025-03-09 06:41:45,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 06:41:45,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 06:41:45,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 06:41:45,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:45,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:45,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:41:45,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:45,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:45,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943086453] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:45,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:45,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:41:45,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854827226] [2025-03-09 06:41:45,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:45,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:41:45,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:45,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:41:45,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:41:45,236 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-03-09 06:41:45,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 748 flow. Second operand has 12 states, 12 states have (on average 12.833333333333334) internal successors, (154), 12 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:45,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:45,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-03-09 06:41:45,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:46,427 INFO L124 PetriNetUnfolderBase]: 5949/11435 cut-off events. [2025-03-09 06:41:46,427 INFO L125 PetriNetUnfolderBase]: For 41130/41392 co-relation queries the response was YES. [2025-03-09 06:41:46,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43493 conditions, 11435 events. 5949/11435 cut-off events. For 41130/41392 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 79417 event pairs, 1352 based on Foata normal form. 573/12007 useless extension candidates. Maximal degree in co-relation 43460. Up to 4015 conditions per place. [2025-03-09 06:41:46,561 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 382 selfloop transitions, 13 changer transitions 14/413 dead transitions. [2025-03-09 06:41:46,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 413 transitions, 5221 flow [2025-03-09 06:41:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:41:46,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:41:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2025-03-09 06:41:46,563 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5685714285714286 [2025-03-09 06:41:46,563 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 748 flow. Second operand 10 states and 199 transitions. [2025-03-09 06:41:46,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 413 transitions, 5221 flow [2025-03-09 06:41:46,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 413 transitions, 5191 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-03-09 06:41:46,618 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 806 flow [2025-03-09 06:41:46,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=806, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2025-03-09 06:41:46,619 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 55 predicate places. [2025-03-09 06:41:46,619 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 806 flow [2025-03-09 06:41:46,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.833333333333334) internal successors, (154), 12 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:46,620 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:46,620 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2025-03-09 06:41:46,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 06:41:46,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:46,821 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:46,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:46,821 INFO L85 PathProgramCache]: Analyzing trace with hash -308928084, now seen corresponding path program 2 times [2025-03-09 06:41:46,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:46,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051983254] [2025-03-09 06:41:46,822 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:41:46,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:46,827 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-09 06:41:46,829 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 28 statements. [2025-03-09 06:41:46,829 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:41:46,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-09 06:41:46,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:46,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051983254] [2025-03-09 06:41:46,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051983254] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233043300] [2025-03-09 06:41:46,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:41:46,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:46,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:46,849 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) [2025-03-09 06:41:46,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 06:41:46,876 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-09 06:41:46,881 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 28 statements. [2025-03-09 06:41:46,881 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:41:46,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:46,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:41:46,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-09 06:41:46,907 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-09 06:41:46,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233043300] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:46,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:46,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-09 06:41:46,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601514923] [2025-03-09 06:41:46,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:46,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:41:46,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:46,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:41:46,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:41:46,948 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2025-03-09 06:41:46,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 806 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:46,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:46,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2025-03-09 06:41:46,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:47,909 INFO L124 PetriNetUnfolderBase]: 6616/12155 cut-off events. [2025-03-09 06:41:47,909 INFO L125 PetriNetUnfolderBase]: For 53406/53511 co-relation queries the response was YES. [2025-03-09 06:41:47,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46433 conditions, 12155 events. 6616/12155 cut-off events. For 53406/53511 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 80649 event pairs, 1676 based on Foata normal form. 526/12681 useless extension candidates. Maximal degree in co-relation 46398. Up to 4362 conditions per place. [2025-03-09 06:41:47,970 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 132 selfloop transitions, 13 changer transitions 0/148 dead transitions. [2025-03-09 06:41:47,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 148 transitions, 1650 flow [2025-03-09 06:41:47,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:41:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:41:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2025-03-09 06:41:47,972 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48 [2025-03-09 06:41:47,972 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 806 flow. Second operand 5 states and 84 transitions. [2025-03-09 06:41:47,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 148 transitions, 1650 flow [2025-03-09 06:41:48,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 148 transitions, 1607 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-03-09 06:41:48,054 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 813 flow [2025-03-09 06:41:48,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=813, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2025-03-09 06:41:48,055 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 53 predicate places. [2025-03-09 06:41:48,055 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 813 flow [2025-03-09 06:41:48,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:48,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:48,055 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1] [2025-03-09 06:41:48,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 06:41:48,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-09 06:41:48,256 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:48,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:48,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1344584602, now seen corresponding path program 2 times [2025-03-09 06:41:48,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:48,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307052487] [2025-03-09 06:41:48,257 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:41:48,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:48,261 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-03-09 06:41:48,266 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:41:48,266 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:41:48,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:48,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:48,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307052487] [2025-03-09 06:41:48,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307052487] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:48,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136501140] [2025-03-09 06:41:48,429 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:41:48,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:48,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:48,431 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) [2025-03-09 06:41:48,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 06:41:48,460 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-03-09 06:41:48,474 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:41:48,474 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:41:48,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:48,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-09 06:41:48,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:48,527 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:48,676 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:48,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136501140] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:48,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:48,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-03-09 06:41:48,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510978679] [2025-03-09 06:41:48,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:48,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-09 06:41:48,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:48,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-09 06:41:48,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2025-03-09 06:41:48,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-03-09 06:41:48,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 813 flow. Second operand has 21 states, 21 states have (on average 14.857142857142858) internal successors, (312), 21 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:48,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:48,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-03-09 06:41:48,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:52,142 INFO L124 PetriNetUnfolderBase]: 15817/30472 cut-off events. [2025-03-09 06:41:52,142 INFO L125 PetriNetUnfolderBase]: For 191887/192231 co-relation queries the response was YES. [2025-03-09 06:41:52,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117983 conditions, 30472 events. 15817/30472 cut-off events. For 191887/192231 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 231247 event pairs, 1326 based on Foata normal form. 972/31441 useless extension candidates. Maximal degree in co-relation 117949. Up to 6233 conditions per place. [2025-03-09 06:41:52,367 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 510 selfloop transitions, 126 changer transitions 0/641 dead transitions. [2025-03-09 06:41:52,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 641 transitions, 5832 flow [2025-03-09 06:41:52,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-09 06:41:52,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-09 06:41:52,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 542 transitions. [2025-03-09 06:41:52,371 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7374149659863946 [2025-03-09 06:41:52,372 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 813 flow. Second operand 21 states and 542 transitions. [2025-03-09 06:41:52,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 641 transitions, 5832 flow [2025-03-09 06:41:52,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 641 transitions, 5730 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:41:52,600 INFO L231 Difference]: Finished difference. Result has 125 places, 174 transitions, 2381 flow [2025-03-09 06:41:52,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2381, PETRI_PLACES=125, PETRI_TRANSITIONS=174} [2025-03-09 06:41:52,601 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 88 predicate places. [2025-03-09 06:41:52,601 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 174 transitions, 2381 flow [2025-03-09 06:41:52,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.857142857142858) internal successors, (312), 21 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:52,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:52,601 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:52,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 06:41:52,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-09 06:41:52,802 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:52,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:52,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1912912572, now seen corresponding path program 2 times [2025-03-09 06:41:52,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:52,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765095347] [2025-03-09 06:41:52,802 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:41:52,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:52,809 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-03-09 06:41:52,812 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 53 statements. [2025-03-09 06:41:52,813 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:41:52,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:52,835 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-03-09 06:41:52,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:52,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765095347] [2025-03-09 06:41:52,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765095347] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:52,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427095079] [2025-03-09 06:41:52,836 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:41:52,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:52,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:52,838 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) [2025-03-09 06:41:52,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 06:41:52,868 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-03-09 06:41:52,876 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 53 statements. [2025-03-09 06:41:52,876 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:41:52,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:52,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:41:52,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-03-09 06:41:52,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-03-09 06:41:52,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427095079] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:52,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:52,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-09 06:41:52,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692284762] [2025-03-09 06:41:52,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:52,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:41:52,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:52,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:41:52,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:41:52,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-03-09 06:41:52,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 174 transitions, 2381 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:52,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:52,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-03-09 06:41:52,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:56,293 INFO L124 PetriNetUnfolderBase]: 15817/30537 cut-off events. [2025-03-09 06:41:56,293 INFO L125 PetriNetUnfolderBase]: For 167270/167270 co-relation queries the response was YES. [2025-03-09 06:41:56,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121610 conditions, 30537 events. 15817/30537 cut-off events. For 167270/167270 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 232897 event pairs, 2860 based on Foata normal form. 706/31242 useless extension candidates. Maximal degree in co-relation 121557. Up to 9742 conditions per place. [2025-03-09 06:41:56,590 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 340 selfloop transitions, 16 changer transitions 6/366 dead transitions. [2025-03-09 06:41:56,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 366 transitions, 5982 flow [2025-03-09 06:41:56,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:41:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:41:56,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2025-03-09 06:41:56,591 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49142857142857144 [2025-03-09 06:41:56,591 INFO L175 Difference]: Start difference. First operand has 125 places, 174 transitions, 2381 flow. Second operand 5 states and 86 transitions. [2025-03-09 06:41:56,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 366 transitions, 5982 flow [2025-03-09 06:41:57,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 366 transitions, 5290 flow, removed 292 selfloop flow, removed 9 redundant places. [2025-03-09 06:41:57,197 INFO L231 Difference]: Finished difference. Result has 120 places, 173 transitions, 2134 flow [2025-03-09 06:41:57,197 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2134, PETRI_PLACES=120, PETRI_TRANSITIONS=173} [2025-03-09 06:41:57,197 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 83 predicate places. [2025-03-09 06:41:57,197 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 173 transitions, 2134 flow [2025-03-09 06:41:57,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:57,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:57,197 INFO L206 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1] [2025-03-09 06:41:57,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 06:41:57,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-09 06:41:57,398 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:41:57,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:57,399 INFO L85 PathProgramCache]: Analyzing trace with hash 375215014, now seen corresponding path program 3 times [2025-03-09 06:41:57,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:57,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679610909] [2025-03-09 06:41:57,399 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:41:57,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:57,407 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 95 statements into 19 equivalence classes. [2025-03-09 06:41:57,437 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 95 of 95 statements. [2025-03-09 06:41:57,440 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-03-09 06:41:57,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:57,878 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:57,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:57,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679610909] [2025-03-09 06:41:57,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679610909] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:57,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051905320] [2025-03-09 06:41:57,878 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:41:57,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:57,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:57,881 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) [2025-03-09 06:41:57,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 06:41:57,915 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 95 statements into 19 equivalence classes. [2025-03-09 06:41:57,958 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 95 of 95 statements. [2025-03-09 06:41:57,958 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-03-09 06:41:57,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:57,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-03-09 06:41:57,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:58,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:58,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051905320] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:58,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:58,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2025-03-09 06:41:58,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283658032] [2025-03-09 06:41:58,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:58,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-09 06:41:58,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:58,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-09 06:41:58,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2025-03-09 06:41:58,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-03-09 06:41:58,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 173 transitions, 2134 flow. Second operand has 41 states, 41 states have (on average 14.926829268292684) internal successors, (612), 41 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:58,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:58,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-03-09 06:41:58,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:07,297 INFO L124 PetriNetUnfolderBase]: 30402/60220 cut-off events. [2025-03-09 06:42:07,298 INFO L125 PetriNetUnfolderBase]: For 917932/917940 co-relation queries the response was YES. [2025-03-09 06:42:07,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246487 conditions, 60220 events. 30402/60220 cut-off events. For 917932/917940 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 473886 event pairs, 2703 based on Foata normal form. 1902/62119 useless extension candidates. Maximal degree in co-relation 246440. Up to 12107 conditions per place. [2025-03-09 06:42:07,923 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 971 selfloop transitions, 468 changer transitions 0/1443 dead transitions. [2025-03-09 06:42:07,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 1443 transitions, 15200 flow [2025-03-09 06:42:07,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-03-09 06:42:07,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2025-03-09 06:42:07,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1004 transitions. [2025-03-09 06:42:07,925 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6996515679442509 [2025-03-09 06:42:07,925 INFO L175 Difference]: Start difference. First operand has 120 places, 173 transitions, 2134 flow. Second operand 41 states and 1004 transitions. [2025-03-09 06:42:07,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 1443 transitions, 15200 flow [2025-03-09 06:42:08,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 1443 transitions, 14461 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:42:08,438 INFO L231 Difference]: Finished difference. Result has 193 places, 515 transitions, 7752 flow [2025-03-09 06:42:08,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2113, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=7752, PETRI_PLACES=193, PETRI_TRANSITIONS=515} [2025-03-09 06:42:08,439 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 156 predicate places. [2025-03-09 06:42:08,439 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 515 transitions, 7752 flow [2025-03-09 06:42:08,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 14.926829268292684) internal successors, (612), 41 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:08,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:08,439 INFO L206 CegarLoopForPetriNet]: trace histogram [39, 38, 38, 38, 38, 1, 1, 1, 1] [2025-03-09 06:42:08,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-09 06:42:08,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:08,640 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-09 06:42:08,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:08,641 INFO L85 PathProgramCache]: Analyzing trace with hash -878280154, now seen corresponding path program 4 times [2025-03-09 06:42:08,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:08,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002458532] [2025-03-09 06:42:08,641 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:42:08,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:08,651 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 195 statements into 2 equivalence classes. [2025-03-09 06:42:08,712 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 195 of 195 statements. [2025-03-09 06:42:08,713 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:42:08,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:10,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002458532] [2025-03-09 06:42:10,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002458532] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361672285] [2025-03-09 06:42:10,636 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:42:10,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:10,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:10,638 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:42:10,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 06:42:10,682 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 195 statements into 2 equivalence classes. [2025-03-09 06:42:10,730 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 195 of 195 statements. [2025-03-09 06:42:10,730 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:42:10,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:10,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-03-09 06:42:10,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:10,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:12,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:12,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361672285] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:12,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:12,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 79 [2025-03-09 06:42:12,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298616860] [2025-03-09 06:42:12,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:12,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2025-03-09 06:42:12,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:12,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2025-03-09 06:42:12,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2025-03-09 06:42:12,566 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2025-03-09 06:42:12,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 515 transitions, 7752 flow. Second operand has 81 states, 81 states have (on average 14.962962962962964) internal successors, (1212), 81 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:12,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:12,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2025-03-09 06:42:12,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand