./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:10:08,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:10:08,089 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:10:08,093 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:10:08,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:10:08,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:10:08,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:10:08,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:10:08,111 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:10:08,111 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:10:08,114 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:10:08,115 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:10:08,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:10:08,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:10:08,115 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:10:08,115 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:10:08,115 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:10:08,115 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:10:08,115 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:10:08,115 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:10:08,115 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:10:08,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:10:08,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:10:08,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:10:08,115 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:10:08,115 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:10:08,116 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:10:08,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:10:08,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:10:08,116 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-jdk21/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 -> b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 [2025-02-08 14:10:08,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:10:08,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:10:08,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:10:08,331 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:10:08,331 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:10:08,333 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2025-02-08 14:10:09,556 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/daec22eae/af6204ddb7174bfaa29545a548966b06/FLAGe38f393f2 [2025-02-08 14:10:09,808 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:10:09,808 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2025-02-08 14:10:09,814 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/daec22eae/af6204ddb7174bfaa29545a548966b06/FLAGe38f393f2 [2025-02-08 14:10:09,824 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/daec22eae/af6204ddb7174bfaa29545a548966b06 [2025-02-08 14:10:09,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:10:09,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:10:09,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:10:09,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:10:09,831 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:10:09,832 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:10:09" (1/1) ... [2025-02-08 14:10:09,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78fb49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09, skipping insertion in model container [2025-02-08 14:10:09,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:10:09" (1/1) ... [2025-02-08 14:10:09,845 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:10:09,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:10:09,961 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:10:09,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:10:09,984 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:10:09,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09 WrapperNode [2025-02-08 14:10:09,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:10:09,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:10:09,986 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:10:09,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:10:09,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09" (1/1) ... [2025-02-08 14:10:09,996 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09" (1/1) ... [2025-02-08 14:10:10,010 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2025-02-08 14:10:10,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:10:10,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:10:10,012 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:10:10,012 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:10:10,017 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09" (1/1) ... [2025-02-08 14:10:10,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09" (1/1) ... [2025-02-08 14:10:10,019 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09" (1/1) ... [2025-02-08 14:10:10,034 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]. [2025-02-08 14:10:10,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09" (1/1) ... [2025-02-08 14:10:10,035 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09" (1/1) ... [2025-02-08 14:10:10,037 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09" (1/1) ... [2025-02-08 14:10:10,040 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09" (1/1) ... [2025-02-08 14:10:10,040 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09" (1/1) ... [2025-02-08 14:10:10,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09" (1/1) ... [2025-02-08 14:10:10,045 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:10:10,046 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:10:10,046 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:10:10,046 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:10:10,047 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09" (1/1) ... [2025-02-08 14:10:10,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:10:10,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:10:10,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:10:10,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:10:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:10:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:10:10,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:10:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:10:10,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:10:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:10:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:10:10,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:10:10,099 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:10:10,168 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:10:10,171 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:10:10,372 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:10:10,373 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:10:10,489 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:10:10,489 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:10:10,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:10:10 BoogieIcfgContainer [2025-02-08 14:10:10,490 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:10:10,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:10:10,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:10:10,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:10:10,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:10:09" (1/3) ... [2025-02-08 14:10:10,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799d020e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:10:10, skipping insertion in model container [2025-02-08 14:10:10,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:09" (2/3) ... [2025-02-08 14:10:10,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799d020e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:10:10, skipping insertion in model container [2025-02-08 14:10:10,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:10:10" (3/3) ... [2025-02-08 14:10:10,497 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2025-02-08 14:10:10,508 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:10:10,509 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-3.wvr.c that has 3 procedures, 33 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-02-08 14:10:10,509 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:10:10,557 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:10:10,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 36 transitions, 86 flow [2025-02-08 14:10:10,615 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-02-08 14:10:10,618 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:10:10,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 34 events. 4/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 99 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-02-08 14:10:10,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 36 transitions, 86 flow [2025-02-08 14:10:10,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 73 flow [2025-02-08 14:10:10,631 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:10:10,641 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;@53c6ec83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:10:10,641 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-02-08 14:10:10,645 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:10:10,646 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-02-08 14:10:10,646 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:10:10,646 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:10,648 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 14:10:10,649 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:10:10,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:10,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1297072908, now seen corresponding path program 1 times [2025-02-08 14:10:10,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:10,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008241656] [2025-02-08 14:10:10,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:10,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:10,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:10:10,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:10:10,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:10,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:10,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:10,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008241656] [2025-02-08 14:10:10,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008241656] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:10:10,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:10:10,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:10:10,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304139311] [2025-02-08 14:10:10,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:10:10,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:10:10,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:10,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:10:10,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:10:10,860 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:10:10,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:10,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:10,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:10:10,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:10:11,026 INFO L124 PetriNetUnfolderBase]: 478/740 cut-off events. [2025-02-08 14:10:11,027 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2025-02-08 14:10:11,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 740 events. 478/740 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3312 event pairs, 68 based on Foata normal form. 0/431 useless extension candidates. Maximal degree in co-relation 1350. Up to 631 conditions per place. [2025-02-08 14:10:11,040 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 27 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2025-02-08 14:10:11,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 163 flow [2025-02-08 14:10:11,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:10:11,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:10:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2025-02-08 14:10:11,051 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2025-02-08 14:10:11,052 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 73 flow. Second operand 3 states and 76 transitions. [2025-02-08 14:10:11,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 163 flow [2025-02-08 14:10:11,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 155 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:10:11,059 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 115 flow [2025-02-08 14:10:11,061 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2025-02-08 14:10:11,064 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2025-02-08 14:10:11,064 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 115 flow [2025-02-08 14:10:11,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:11,064 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:11,064 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:10:11,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:10:11,064 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:10:11,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:11,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1882340683, now seen corresponding path program 1 times [2025-02-08 14:10:11,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:11,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072793261] [2025-02-08 14:10:11,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:11,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:11,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:10:11,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:10:11,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:11,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:11,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:11,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:11,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072793261] [2025-02-08 14:10:11,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072793261] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:10:11,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919385780] [2025-02-08 14:10:11,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:11,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:10:11,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:10:11,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:10:11,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:10:11,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:10:11,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:10:11,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:11,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:11,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:10:11,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:10:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:11,306 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:10:11,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919385780] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:10:11,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:10:11,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2025-02-08 14:10:11,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690500400] [2025-02-08 14:10:11,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:10:11,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:10:11,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:11,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:10:11,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:10:11,308 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:10:11,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 115 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:11,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:11,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:10:11,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:10:11,543 INFO L124 PetriNetUnfolderBase]: 793/1312 cut-off events. [2025-02-08 14:10:11,543 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2025-02-08 14:10:11,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3142 conditions, 1312 events. 793/1312 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6557 event pairs, 81 based on Foata normal form. 0/839 useless extension candidates. Maximal degree in co-relation 2630. Up to 667 conditions per place. [2025-02-08 14:10:11,554 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 39 selfloop transitions, 19 changer transitions 0/68 dead transitions. [2025-02-08 14:10:11,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 68 transitions, 333 flow [2025-02-08 14:10:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:10:11,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:10:11,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-02-08 14:10:11,555 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7638888888888888 [2025-02-08 14:10:11,555 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 115 flow. Second operand 4 states and 110 transitions. [2025-02-08 14:10:11,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 68 transitions, 333 flow [2025-02-08 14:10:11,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 68 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:10:11,557 INFO L231 Difference]: Finished difference. Result has 39 places, 50 transitions, 264 flow [2025-02-08 14:10:11,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=39, PETRI_TRANSITIONS=50} [2025-02-08 14:10:11,557 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2025-02-08 14:10:11,558 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 50 transitions, 264 flow [2025-02-08 14:10:11,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:11,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:11,559 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:10:11,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 14:10:11,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:10:11,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:10:11,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1981751627, now seen corresponding path program 1 times [2025-02-08 14:10:11,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:11,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925578164] [2025-02-08 14:10:11,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:11,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:10:11,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:10:11,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:11,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:11,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:11,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925578164] [2025-02-08 14:10:11,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925578164] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:10:11,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:10:11,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:10:11,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680611094] [2025-02-08 14:10:11,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:10:11,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:10:11,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:11,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:10:11,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:10:11,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:10:11,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 50 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:11,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:11,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:10:11,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:10:11,997 INFO L124 PetriNetUnfolderBase]: 890/1487 cut-off events. [2025-02-08 14:10:11,997 INFO L125 PetriNetUnfolderBase]: For 2606/2606 co-relation queries the response was YES. [2025-02-08 14:10:12,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4541 conditions, 1487 events. 890/1487 cut-off events. For 2606/2606 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7515 event pairs, 91 based on Foata normal form. 88/1437 useless extension candidates. Maximal degree in co-relation 3871. Up to 1146 conditions per place. [2025-02-08 14:10:12,007 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 47 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2025-02-08 14:10:12,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 70 transitions, 460 flow [2025-02-08 14:10:12,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:10:12,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:10:12,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2025-02-08 14:10:12,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2025-02-08 14:10:12,009 INFO L175 Difference]: Start difference. First operand has 39 places, 50 transitions, 264 flow. Second operand 4 states and 106 transitions. [2025-02-08 14:10:12,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 70 transitions, 460 flow [2025-02-08 14:10:12,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 70 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:10:12,015 INFO L231 Difference]: Finished difference. Result has 44 places, 58 transitions, 394 flow [2025-02-08 14:10:12,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=44, PETRI_TRANSITIONS=58} [2025-02-08 14:10:12,016 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2025-02-08 14:10:12,016 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 58 transitions, 394 flow [2025-02-08 14:10:12,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:12,016 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:12,016 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:10:12,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:10:12,016 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:10:12,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:12,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1968835114, now seen corresponding path program 1 times [2025-02-08 14:10:12,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:12,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552993955] [2025-02-08 14:10:12,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:12,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:12,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:10:12,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:10:12,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:12,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:12,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:12,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552993955] [2025-02-08 14:10:12,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552993955] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:10:12,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422510871] [2025-02-08 14:10:12,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:12,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:10:12,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:10:12,118 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:10:12,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:10:12,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:10:12,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:10:12,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:12,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:12,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:10:12,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:10:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:12,187 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:10:12,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422510871] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:10:12,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:10:12,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2025-02-08 14:10:12,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408322465] [2025-02-08 14:10:12,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:10:12,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:10:12,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:12,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:10:12,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:10:12,189 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:10:12,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 58 transitions, 394 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) [2025-02-08 14:10:12,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:12,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:10:12,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:10:12,377 INFO L124 PetriNetUnfolderBase]: 1184/2032 cut-off events. [2025-02-08 14:10:12,377 INFO L125 PetriNetUnfolderBase]: For 8099/8099 co-relation queries the response was YES. [2025-02-08 14:10:12,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7175 conditions, 2032 events. 1184/2032 cut-off events. For 8099/8099 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 11114 event pairs, 103 based on Foata normal form. 128/1955 useless extension candidates. Maximal degree in co-relation 5906. Up to 1033 conditions per place. [2025-02-08 14:10:12,389 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 63 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2025-02-08 14:10:12,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 94 transitions, 797 flow [2025-02-08 14:10:12,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:10:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:10:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-02-08 14:10:12,391 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7638888888888888 [2025-02-08 14:10:12,391 INFO L175 Difference]: Start difference. First operand has 44 places, 58 transitions, 394 flow. Second operand 4 states and 110 transitions. [2025-02-08 14:10:12,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 94 transitions, 797 flow [2025-02-08 14:10:12,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 94 transitions, 765 flow, removed 16 selfloop flow, removed 0 redundant places. [2025-02-08 14:10:12,399 INFO L231 Difference]: Finished difference. Result has 49 places, 74 transitions, 642 flow [2025-02-08 14:10:12,399 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=642, PETRI_PLACES=49, PETRI_TRANSITIONS=74} [2025-02-08 14:10:12,400 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2025-02-08 14:10:12,400 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 74 transitions, 642 flow [2025-02-08 14:10:12,400 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) [2025-02-08 14:10:12,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:12,400 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:10:12,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 14:10:12,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:10:12,601 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:10:12,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:12,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1882340682, now seen corresponding path program 1 times [2025-02-08 14:10:12,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:12,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015941285] [2025-02-08 14:10:12,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:12,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:12,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:10:12,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:10:12,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:12,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:12,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:12,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015941285] [2025-02-08 14:10:12,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015941285] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:10:12,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141108075] [2025-02-08 14:10:12,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:12,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:10:12,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:10:12,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:10:12,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 14:10:12,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:10:12,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:10:12,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:12,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:12,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:10:12,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:10:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:12,699 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:10:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:12,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141108075] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:10:12,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:10:12,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-02-08 14:10:12,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545465078] [2025-02-08 14:10:12,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:10:12,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 14:10:12,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:12,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 14:10:12,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:10:12,728 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:10:12,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 74 transitions, 642 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:12,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:12,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:10:12,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:10:13,135 INFO L124 PetriNetUnfolderBase]: 2367/4071 cut-off events. [2025-02-08 14:10:13,135 INFO L125 PetriNetUnfolderBase]: For 29109/29109 co-relation queries the response was YES. [2025-02-08 14:10:13,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15594 conditions, 4071 events. 2367/4071 cut-off events. For 29109/29109 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 23559 event pairs, 103 based on Foata normal form. 362/4111 useless extension candidates. Maximal degree in co-relation 13432. Up to 1759 conditions per place. [2025-02-08 14:10:13,168 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 103 selfloop transitions, 57 changer transitions 0/170 dead transitions. [2025-02-08 14:10:13,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 170 transitions, 1651 flow [2025-02-08 14:10:13,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:10:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:10:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2025-02-08 14:10:13,172 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2025-02-08 14:10:13,172 INFO L175 Difference]: Start difference. First operand has 49 places, 74 transitions, 642 flow. Second operand 7 states and 196 transitions. [2025-02-08 14:10:13,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 170 transitions, 1651 flow [2025-02-08 14:10:13,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 170 transitions, 1607 flow, removed 22 selfloop flow, removed 0 redundant places. [2025-02-08 14:10:13,188 INFO L231 Difference]: Finished difference. Result has 59 places, 114 transitions, 1373 flow [2025-02-08 14:10:13,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1373, PETRI_PLACES=59, PETRI_TRANSITIONS=114} [2025-02-08 14:10:13,190 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 24 predicate places. [2025-02-08 14:10:13,191 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 114 transitions, 1373 flow [2025-02-08 14:10:13,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:13,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:13,191 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:10:13,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 14:10:13,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:10:13,391 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:10:13,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash -908026028, now seen corresponding path program 1 times [2025-02-08 14:10:13,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:13,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428407461] [2025-02-08 14:10:13,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:13,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:13,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:10:13,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:10:13,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:13,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:13,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:13,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428407461] [2025-02-08 14:10:13,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428407461] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:10:13,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895234753] [2025-02-08 14:10:13,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:13,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:10:13,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:10:13,461 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:10:13,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 14:10:13,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:10:13,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:10:13,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:13,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:13,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:10:13,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:10:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:13,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:10:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:13,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895234753] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:10:13,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:10:13,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-02-08 14:10:13,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017063082] [2025-02-08 14:10:13,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:10:13,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 14:10:13,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:13,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 14:10:13,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:10:13,557 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:10:13,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 114 transitions, 1373 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:13,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:13,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:10:13,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:10:13,966 INFO L124 PetriNetUnfolderBase]: 2640/4718 cut-off events. [2025-02-08 14:10:13,966 INFO L125 PetriNetUnfolderBase]: For 59448/59448 co-relation queries the response was YES. [2025-02-08 14:10:13,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20127 conditions, 4718 events. 2640/4718 cut-off events. For 59448/59448 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 29512 event pairs, 148 based on Foata normal form. 516/4885 useless extension candidates. Maximal degree in co-relation 17326. Up to 1863 conditions per place. [2025-02-08 14:10:13,998 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 99 selfloop transitions, 45 changer transitions 0/154 dead transitions. [2025-02-08 14:10:13,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 154 transitions, 1991 flow [2025-02-08 14:10:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:10:13,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:10:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2025-02-08 14:10:13,999 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-08 14:10:13,999 INFO L175 Difference]: Start difference. First operand has 59 places, 114 transitions, 1373 flow. Second operand 6 states and 144 transitions. [2025-02-08 14:10:13,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 154 transitions, 1991 flow [2025-02-08 14:10:14,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 154 transitions, 1810 flow, removed 88 selfloop flow, removed 1 redundant places. [2025-02-08 14:10:14,029 INFO L231 Difference]: Finished difference. Result has 63 places, 122 transitions, 1597 flow [2025-02-08 14:10:14,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1597, PETRI_PLACES=63, PETRI_TRANSITIONS=122} [2025-02-08 14:10:14,029 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2025-02-08 14:10:14,030 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 122 transitions, 1597 flow [2025-02-08 14:10:14,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:14,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:14,030 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:10:14,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 14:10:14,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-08 14:10:14,230 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:10:14,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:14,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1182878502, now seen corresponding path program 1 times [2025-02-08 14:10:14,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:14,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549702483] [2025-02-08 14:10:14,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:14,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:14,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:10:14,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:10:14,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:14,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:14,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:14,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549702483] [2025-02-08 14:10:14,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549702483] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:10:14,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237014887] [2025-02-08 14:10:14,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:14,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:10:14,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:10:14,315 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:10:14,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 14:10:14,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:10:14,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:10:14,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:14,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:14,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:10:14,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:10:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:14,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:10:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:14,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237014887] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:10:14,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:10:14,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2025-02-08 14:10:14,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085024378] [2025-02-08 14:10:14,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:10:14,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:10:14,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:14,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:10:14,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:10:14,418 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:10:14,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 122 transitions, 1597 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:14,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:14,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:10:14,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:10:16,355 INFO L124 PetriNetUnfolderBase]: 13083/23931 cut-off events. [2025-02-08 14:10:16,355 INFO L125 PetriNetUnfolderBase]: For 267875/267875 co-relation queries the response was YES. [2025-02-08 14:10:16,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103683 conditions, 23931 events. 13083/23931 cut-off events. For 267875/267875 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 173619 event pairs, 557 based on Foata normal form. 894/23190 useless extension candidates. Maximal degree in co-relation 91306. Up to 8134 conditions per place. [2025-02-08 14:10:16,506 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 237 selfloop transitions, 324 changer transitions 0/571 dead transitions. [2025-02-08 14:10:16,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 571 transitions, 8999 flow [2025-02-08 14:10:16,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:10:16,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:10:16,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2025-02-08 14:10:16,511 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2025-02-08 14:10:16,511 INFO L175 Difference]: Start difference. First operand has 63 places, 122 transitions, 1597 flow. Second operand 10 states and 268 transitions. [2025-02-08 14:10:16,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 571 transitions, 8999 flow [2025-02-08 14:10:16,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 571 transitions, 8085 flow, removed 454 selfloop flow, removed 2 redundant places. [2025-02-08 14:10:16,962 INFO L231 Difference]: Finished difference. Result has 76 places, 436 transitions, 7399 flow [2025-02-08 14:10:16,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7399, PETRI_PLACES=76, PETRI_TRANSITIONS=436} [2025-02-08 14:10:16,964 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 41 predicate places. [2025-02-08 14:10:16,964 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 436 transitions, 7399 flow [2025-02-08 14:10:16,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:16,965 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:16,965 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:10:16,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 14:10:17,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:10:17,169 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:10:17,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:17,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1573267671, now seen corresponding path program 1 times [2025-02-08 14:10:17,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:17,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899847139] [2025-02-08 14:10:17,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:17,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:17,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:10:17,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:10:17,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:17,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:17,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:17,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899847139] [2025-02-08 14:10:17,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899847139] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:10:17,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217707774] [2025-02-08 14:10:17,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:17,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:10:17,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:10:17,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:10:17,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 14:10:17,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:10:17,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:10:17,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:17,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:17,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:10:17,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:10:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:17,270 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:10:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:17,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217707774] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:10:17,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:10:17,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-02-08 14:10:17,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434778057] [2025-02-08 14:10:17,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:10:17,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 14:10:17,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:17,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 14:10:17,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:10:17,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:10:17,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 436 transitions, 7399 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:17,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:17,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:10:17,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:10:23,019 INFO L124 PetriNetUnfolderBase]: 29786/56386 cut-off events. [2025-02-08 14:10:23,019 INFO L125 PetriNetUnfolderBase]: For 939540/939540 co-relation queries the response was YES. [2025-02-08 14:10:23,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243205 conditions, 56386 events. 29786/56386 cut-off events. For 939540/939540 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 492269 event pairs, 1122 based on Foata normal form. 5844/57860 useless extension candidates. Maximal degree in co-relation 217271. Up to 13899 conditions per place. [2025-02-08 14:10:23,481 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 485 selfloop transitions, 594 changer transitions 0/1089 dead transitions. [2025-02-08 14:10:23,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 1089 transitions, 19878 flow [2025-02-08 14:10:23,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 14:10:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 14:10:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2025-02-08 14:10:23,483 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2025-02-08 14:10:23,483 INFO L175 Difference]: Start difference. First operand has 76 places, 436 transitions, 7399 flow. Second operand 9 states and 246 transitions. [2025-02-08 14:10:23,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 1089 transitions, 19878 flow [2025-02-08 14:10:24,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 1089 transitions, 19054 flow, removed 400 selfloop flow, removed 2 redundant places. [2025-02-08 14:10:24,993 INFO L231 Difference]: Finished difference. Result has 88 places, 903 transitions, 18229 flow [2025-02-08 14:10:24,993 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7087, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18229, PETRI_PLACES=88, PETRI_TRANSITIONS=903} [2025-02-08 14:10:24,994 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 53 predicate places. [2025-02-08 14:10:24,994 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 903 transitions, 18229 flow [2025-02-08 14:10:24,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:24,994 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:24,994 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:10:25,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 14:10:25,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-08 14:10:25,194 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:10:25,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:25,195 INFO L85 PathProgramCache]: Analyzing trace with hash -53251376, now seen corresponding path program 1 times [2025-02-08 14:10:25,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:25,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263457047] [2025-02-08 14:10:25,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:25,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:25,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 14:10:25,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 14:10:25,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:25,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:25,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:25,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263457047] [2025-02-08 14:10:25,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263457047] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:10:25,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330508340] [2025-02-08 14:10:25,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:25,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:10:25,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:10:25,314 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:10:25,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 14:10:25,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 14:10:25,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 14:10:25,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:25,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:25,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 14:10:25,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:10:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:25,388 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:10:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:25,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330508340] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:10:25,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:10:25,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-08 14:10:25,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600378097] [2025-02-08 14:10:25,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:10:25,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 14:10:25,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:25,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 14:10:25,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-08 14:10:25,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:10:25,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 903 transitions, 18229 flow. Second operand has 13 states, 13 states have (on average 14.23076923076923) internal successors, (185), 13 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:10:25,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:25,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:10:25,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:10:50,599 INFO L124 PetriNetUnfolderBase]: 82944/159303 cut-off events. [2025-02-08 14:10:50,599 INFO L125 PetriNetUnfolderBase]: For 3105905/3105905 co-relation queries the response was YES. [2025-02-08 14:10:51,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753062 conditions, 159303 events. 82944/159303 cut-off events. For 3105905/3105905 co-relation queries the response was YES. Maximal size of possible extension queue 2482. Compared 1638280 event pairs, 3711 based on Foata normal form. 8302/155510 useless extension candidates. Maximal degree in co-relation 699584. Up to 34369 conditions per place. [2025-02-08 14:10:52,020 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 952 selfloop transitions, 2164 changer transitions 0/3126 dead transitions. [2025-02-08 14:10:52,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 3126 transitions, 68451 flow [2025-02-08 14:10:52,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 14:10:52,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 14:10:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 348 transitions. [2025-02-08 14:10:52,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7435897435897436 [2025-02-08 14:10:52,022 INFO L175 Difference]: Start difference. First operand has 88 places, 903 transitions, 18229 flow. Second operand 13 states and 348 transitions. [2025-02-08 14:10:52,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 3126 transitions, 68451 flow [2025-02-08 14:11:06,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 3126 transitions, 64018 flow, removed 2214 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:06,052 INFO L231 Difference]: Finished difference. Result has 106 places, 2623 transitions, 59473 flow [2025-02-08 14:11:06,053 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=15764, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=609, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=59473, PETRI_PLACES=106, PETRI_TRANSITIONS=2623} [2025-02-08 14:11:06,054 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 71 predicate places. [2025-02-08 14:11:06,054 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 2623 transitions, 59473 flow [2025-02-08 14:11:06,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.23076923076923) internal successors, (185), 13 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:06,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:06,054 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:06,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 14:11:06,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:06,255 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-02-08 14:11:06,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:06,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1267572938, now seen corresponding path program 1 times [2025-02-08 14:11:06,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:06,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048954902] [2025-02-08 14:11:06,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:06,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:06,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-08 14:11:06,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 14:11:06,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:06,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:06,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:06,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048954902] [2025-02-08 14:11:06,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048954902] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:06,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71462508] [2025-02-08 14:11:06,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:06,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:06,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:06,380 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:06,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 14:11:06,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-08 14:11:06,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 14:11:06,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:06,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:06,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 14:11:06,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:06,487 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:06,488 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:06,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71462508] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:06,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:06,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-08 14:11:06,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034765569] [2025-02-08 14:11:06,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:06,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 14:11:06,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:06,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 14:11:06,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2025-02-08 14:11:06,581 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-02-08 14:11:06,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 2623 transitions, 59473 flow. Second operand has 15 states, 15 states have (on average 14.2) internal successors, (213), 15 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:06,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:06,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-02-08 14:11:06,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand